diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index aa88d98b..10a3a9c7 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -91,7 +91,6 @@ Lint/AmbiguousOperator:
     - "lib/r2-oas/base.rb"
     - "lib/r2-oas/routing/parser.rb"
     - "lib/r2-oas/app_configuration.rb"
-    - "lib/r2-oas/pluggable_configuration.rb"
 
 Metrics/MethodLength:
   Exclude:
@@ -161,7 +160,6 @@ Naming/ConstantName:
 Naming/PredicateName:
   Exclude:
     - "lib/r2-oas/hooks/hook.rb"
-    - "lib/r2-oas/dynamic/schema/v3/object/from_routes/hookable_base_object.rb"
     - "lib/r2-oas/plugin/hookable.rb"
 
 Style/DoubleNegation:
@@ -179,7 +177,6 @@ Naming/AccessorMethodName:
   Exclude:
     - "lib/r2-oas/configuration.rb"
     - "lib/r2-oas/app_configuration.rb"
-    - "lib/r2-oas/pluggable_configuration.rb"
     - "lib/r2-oas/schema/v3/object/from_files/base_object.rb"
     - "spec/support/helpers/store_helper.rb"
     - "spec/support/helpers/store_helper.rb"
@@ -196,17 +193,12 @@ Lint/UnderscorePrefixedVariableName:
     - "lib/r2-oas/schema/v3/object/from_files/components/request_body_object.rb"
     - "lib/r2-oas/schema/v3/object/from_files/components/schema_object.rb"
 
-Lint/UselessAccessModifier:
-  Exclude:
-    - "lib/r2-oas/pluggable_configuration.rb"
-
 Style/IdenticalConditionalBranches:
   Exclude:
     - "lib/r2-oas/schema/editor.rb"
 
 Style/ClassVars:
   Exclude:
-    - "lib/r2-oas/dynamic/schema/v3/object/from_routes/hookable_base_object.rb"
     - "lib/r2-oas/plugin/hookable.rb"
 
 Style/AccessModifierDeclarations:
diff --git a/.travis.yml b/.travis.yml
index dc8bf590..c1421166 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,7 +6,6 @@ language: ruby
 cache: bundler
 
 rvm:
-  - 2.3.3
   - 2.4.2
   - 2.5.7
   - 2.6.5
diff --git a/Appraisals b/Appraisals
index 969f6304..20f94bca 100644
--- a/Appraisals
+++ b/Appraisals
@@ -1,6 +1,4 @@
-appraise 'ruby-2.3.3' do
-end
-appraise 'ruby-2.4.2' do
+appraise 'ruby-2.4.4' do
 end
 # stable
 appraise 'ruby-2.5.8' do
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 60f66b27..3977f9f4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,14 @@
-# Change Log
+# CHANGELOG
+
+## v0.5.0
+
+2020-01-29
+
+- [`Breaking`] Remove `use_object_classes` option ([#171](https://github.com/yukihirop/r2-oas/pull/171))
+- [`Feature`] Upgrade init command ([#176](https://github.com/yukihirop/r2-oas/pull/176))
+- [`EOL`] EOL Ruby `2.3` and Support over Ruby `2.5.0` ([#170](https://github.com/yukihirop/r2-oas/pull/170))
+
+Please see mileston [v0.5.0](https://github.com/yukihirop/r2-oas/milestone/5?closed=1)
 
 ## v0.4.1
 
diff --git a/Gemfile b/Gemfile
index bef486a3..b36d1498 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,7 +6,3 @@ git_source(:github) { |repo_name| "https://github.com/#{repo_name}" }
 
 # Specify your gem's dependencies in r2-oas.gemspec
 gemspec
-
-group :test do
-  gem 'sqlite3'
-end
diff --git a/README.ja.md b/README.ja.md
index eec697f4..9b1b50eb 100644
--- a/README.ja.md
+++ b/README.ja.md
@@ -50,8 +50,17 @@ $ brew cask install chromedriver
 gemをrequire後、以下のrakeタスクを実行するだけです。
 
 ```bash
-bundle exec routes:oas:docs
-bundle exec routes:oas:editor
+$ bundle exec rake routes:oas:init
+      create	oas_docs
+      create	oas_docs/.paths
+      create	oas_docs/plugins/helpers
+      create	oas_docs/tasks/helpers
+      create	oas_docs/plugins/.gitkeep
+      create	oas_docs/plugins/helpers/.gitkeep
+      create	oas_docs/tasks/.gitkeep
+      create	oas_docs/tasks/helpers/.gitkeep
+$ bundle exec rake routes:oas:docs
+$ bundle exec rake routes:oas:editor
 ```
 
 #### Generate docs
@@ -79,6 +88,14 @@ railsプロジェクトのルートディレクトリで以下のコマンドが
 
 ```bash
 $ bundle exec rake routes:oas:init
+      create	oas_docs
+      create	oas_docs/.paths
+      create	oas_docs/plugins/helpers
+      create	oas_docs/tasks/helpers
+      create	oas_docs/plugins/.gitkeep
+      create	oas_docs/plugins/helpers/.gitkeep
+      create	oas_docs/tasks/.gitkeep
+      create	oas_docs/tasks/helpers/.gitkeep
 ```
 
 ### Generate
@@ -141,7 +158,7 @@ $ OAS_FILE="~/Desktop/swagger.yml" bundle exec rake routes:oas:analyze
 
 ## ❤️ Support Ruby Version
 
-- Ruby (>= 2.3.3p222 (2016-11-21 revision 56859) [x86_64-darwin18])
+- Ruby (>= 2.5.0)
 
 ## ❤️ Support Rouging
 
@@ -185,8 +202,6 @@ OpenAPIの3.0.0をサポートしてます。
 .
 .
 ===== Bundle install for All Support Ruby Result =====
-ruby-2.3.3: 0
-ruby-2.4.2: 0
 ruby-2.5.8: 0
 ruby-2.6.6: 0
 ruby-2.7.1: 0
@@ -214,8 +229,6 @@ ruby-2.7.1: 0
 .
 .
 ===== Rspec for All Support Ruby Result =====
-ruby-2.3.3: 0
-ruby-2.4.2: 0
 ruby-2.5.8: 0
 ruby-2.6.6: 0
 ruby-2.7.1: 0
diff --git a/README.md b/README.md
index 1aee30e2..dc33db1b 100644
--- a/README.md
+++ b/README.md
@@ -64,8 +64,17 @@ R2OAS.load_tasks
 ```
 
 ```bash
-bundle exec routes:oas:docs
-bundle exec routes:oas:editor
+$ bundle exec rake routes:oas:init
+      create	oas_docs
+      create	oas_docs/.paths
+      create	oas_docs/plugins/helpers
+      create	oas_docs/tasks/helpers
+      create	oas_docs/plugins/.gitkeep
+      create	oas_docs/plugins/helpers/.gitkeep
+      create	oas_docs/tasks/.gitkeep
+      create	oas_docs/tasks/helpers/.gitkeep
+$ bundle exec rake routes:oas:docs
+$ bundle exec rake routes:oas:editor
 ```
 
 #### Generate docs
@@ -90,6 +99,14 @@ Initialize r2-oas.
 
 ```bash
 $ bundle exec rake routes:oas:init
+      create	oas_docs
+      create	oas_docs/.paths
+      create	oas_docs/plugins/helpers
+      create	oas_docs/tasks/helpers
+      create	oas_docs/plugins/.gitkeep
+      create	oas_docs/plugins/helpers/.gitkeep
+      create	oas_docs/tasks/.gitkeep
+      create	oas_docs/tasks/helpers/.gitkeep
 ```
 
 ### Generate
@@ -147,7 +164,7 @@ Full docs are available at https://yukihirop.github.io/r2-oas
 
 ## ❤️ Support Ruby Version
 
-- Ruby (>= 2.3.3p222 (2016-11-21 revision 56859) [x86_64-darwin18])
+- Ruby (>= 2.5.0)
 
 ## ❤️ Support Rouging
 
@@ -189,8 +206,6 @@ Full docs are available at https://yukihirop.github.io/r2-oas/#/setting/configur
 .
 .
 ===== Bundle install for All Support Ruby Result =====
-ruby-2.3.3: 0
-ruby-2.4.2: 0
 ruby-2.5.8: 0
 ruby-2.6.6: 0
 ruby-2.7.1: 0
@@ -218,8 +233,6 @@ ruby-2.7.1: 0
 .
 .
 ===== Rspec for All Support Ruby Result =====
-ruby-2.3.3: 0
-ruby-2.4.2: 0
 ruby-2.5.8: 0
 ruby-2.6.6: 0
 ruby-2.7.1: 0
diff --git a/devscript/all_support_ruby.sh b/devscript/all_support_ruby.sh
index 0f48b0d4..caa4bce7 100755
--- a/devscript/all_support_ruby.sh
+++ b/devscript/all_support_ruby.sh
@@ -9,8 +9,6 @@ fi
 which rbenv > /dev/null 2>&1 && if [ $? -ne 0 ]; then echo -e 'rbenv is need\nPlease install rbenv: https://github.com/rbenv/rbenv'; exit 1; fi
 
 declare -a all_support_ruby=(
-  '2.3.3'
-  '2.4.2'
   '2.5.8'
   '2.6.6'
   '2.7.1'
diff --git a/devscript/bundle_for_all_support_ruby.sh b/devscript/bundle_for_all_support_ruby.sh
index 55d1e23b..11058632 100755
--- a/devscript/bundle_for_all_support_ruby.sh
+++ b/devscript/bundle_for_all_support_ruby.sh
@@ -13,11 +13,7 @@ for version in $@; do
   echo ${version} > ./.ruby-version && rbenv rehash
   
   # Bundle install
-  if [[ $version == "2.3.3" ]]; then
-    BUNDLE_GEMFILE=./gemfiles/ruby_${version}.gemfile bundle _1.17.3_ install --path vendor/bundle && report+=("ruby-${version}: $?")
-  else
-    BUNDLE_GEMFILE=./gemfiles/ruby_${version}.gemfile bundle install --path vendor/bundle && report+=("ruby-${version}: $?")
-  fi 
+  BUNDLE_GEMFILE=./gemfiles/ruby_${version}.gemfile bundle install --path vendor/bundle && report+=("ruby-${version}: $?") 
   if [ $? -ne 0 ]; then report+=("ruby-${version}: 1 (failed)");fi
 
   echo "== End for Ruby Version: ${version} =="
diff --git a/devscript/rspec_for_all_support_ruby.sh b/devscript/rspec_for_all_support_ruby.sh
index fc2abe72..4609d6ec 100755
--- a/devscript/rspec_for_all_support_ruby.sh
+++ b/devscript/rspec_for_all_support_ruby.sh
@@ -9,11 +9,7 @@ for version in $@; do
   echo ${version} > ./.ruby-version && rbenv rehash
 
   # Rspec
-  if [[ $version == "2.3.3" ]];then
-    BUNDLE_GEMFILE=./gemfiles/ruby_${version}.gemfile bundle _1.17.3_ exec rspec --format progress && report+=("ruby-${version}: $?")
-  else
-    BUNDLE_GEMFILE=./gemfiles/ruby_${version}.gemfile bundle exec rspec --format progress && report+=("ruby-${version}: $?")
-  fi
+  BUNDLE_GEMFILE=./gemfiles/ruby_${version}.gemfile bundle exec rspec --format progress && report+=("ruby-${version}: $?")
   if [ $? -ne 0 ]; then report+=("ruby-${version}: 1 (failed)");fi
 
   echo "== End for Ruby Version: ${version} =="
diff --git a/docs/_sidebar.md b/docs/_sidebar.md
index f74398c1..d500900c 100644
--- a/docs/_sidebar.md
+++ b/docs/_sidebar.md
@@ -6,8 +6,8 @@
 * **Usage**
  * [🆕 __Use plugins__](/usage/use_plugins)
  * [🆕 __Define tasks__](/usage/define_tasks)
- * [__[Deprecated] Use hook methods__](/usage/use_hook_methods)
- * [__[Deprecated] Use Hook to Generate Docs__](/usage/use_hook_to_generate_docs)
+ * [__[before v0.4.1] Use hook methods__](/usage/use_hook_methods)
+ * [__[before v0.4.1] Use Hook to Generate Docs__](/usage/use_hook_to_generate_docs)
  * [Initialize](/usage/initialize)
  * [Silent Log](/usage/silent_log)
  * [Generate Docs](/usage/generate_docs)
diff --git a/docs/setting/configure.md b/docs/setting/configure.md
index ed931632..96285a6e 100644
--- a/docs/setting/configure.md
+++ b/docs/setting/configure.md
@@ -36,16 +36,6 @@ R2OAS.configure do |config|
     swagger.editor.exposed_port = "8080/tcp" 
   end
 
-  config.use_object_classes = {
-    info_object:                    R2OAS::Schema::V3::InfoObject,
-    paths_object:                   R2OAS::Schema::V3::PathsObject,
-    path_item_object:               R2OAS::Schema::V3::PathItemObject,
-    external_document_object:       R2OAS::Schema::V3::ExternalDocumentObject,
-    components_object:              R2OAS::Schema::V3::ComponentsObject,
-    components_schema_object:       R2OAS::Schema::V3::Components::SchemaObject,
-    components_request_body_object: R2OAS::Schema::V3::Components::RequestBodyObject
-  }
-
   config.http_statuses_when_http_method = {
     get: {
       default: %w(200 422),
@@ -125,12 +115,6 @@ we explain the options that can be set.
 |swagger|editor|port|Swagger Editor Port|`"8080"`|
 |swagger|editor|exposed_port|Swagger Editor Exposed Port|`"8080/tcp"`|
 
-#### hook
-
-|option|description|default|
-|------|-----------|-------|
-|use_object_classes|Object class(hook class) to generate Openapi document|{ info_object: `R2OAS::Schema::V3::InfoObject`,<br>paths_object: `R2OAS::Schema::V3::PathsObject`,<br>path_item_object: `R2OAS::Schema::V3::PathItemObject`, external_document_object: `R2OAS::Schema::V3::ExternalDocumentObject`,<br> components_object: `R2OAS::Schema::V3::ComponentsObject`,<br> components_schema_object: `R2OAS::Schema::V3::Components::SchemaObject`, <br> components_request_body_object:`R2OAS::Schema::V3::Components::RequestBodyObject` }|
-
 #### deprecation
 
 |option|children option|description|default|
diff --git a/docs/usage/initialize.md b/docs/usage/initialize.md
index 56282610..8348a79d 100644
--- a/docs/usage/initialize.md
+++ b/docs/usage/initialize.md
@@ -12,6 +12,14 @@ R2OAS.load_tasks
 
 ```bash
 $ bundle exec rake routes:oas:init
+      create	oas_docs
+      create	oas_docs/.paths
+      create	oas_docs/plugins/helpers
+      create	oas_docs/tasks/helpers
+      create	oas_docs/plugins/.gitkeep
+      create	oas_docs/plugins/helpers/.gitkeep
+      create	oas_docs/tasks/.gitkeep
+      create	oas_docs/tasks/helpers/.gitkeep
 ```
 
 By default, the directory is created as follows.
diff --git a/docs/usage/use_hook_methods.md b/docs/usage/use_hook_methods.md
index 90e4e250..eefb410a 100644
--- a/docs/usage/use_hook_methods.md
+++ b/docs/usage/use_hook_methods.md
@@ -1,7 +1,6 @@
-# [Deprecated] Use hook methods
+# [before v0.4.1] Use hook methods
 
-!> ・will be removed in `v0.4.2`  
-   ・Please use the `plugin` instead
+!> This option is valid until `v0.4.1`. Please use `plugin` instead for `v0.5.0` and above
 
 Supported hook(life cycle methods) is like this:
 
diff --git a/docs/usage/use_hook_to_generate_docs.md b/docs/usage/use_hook_to_generate_docs.md
index f8cc5cc0..afd5a756 100644
--- a/docs/usage/use_hook_to_generate_docs.md
+++ b/docs/usage/use_hook_to_generate_docs.md
@@ -1,7 +1,6 @@
-## [Deprecated] Use hook to generate docs
+# [before v0.4.1] Use hook to generate docs
 
-!> ・will be removed in `v0.4.2`  
-   ・Please use the `plugin` instead
+!> This option is valid until `v0.4.1`. Please use `plugin` instead for `v0.5.0` and above
 
 ## Prepare
 
diff --git a/gemfiles/ruby_2.3.3.gemfile b/gemfiles/ruby_2.3.3.gemfile
deleted file mode 100644
index eec6090a..00000000
--- a/gemfiles/ruby_2.3.3.gemfile
+++ /dev/null
@@ -1,11 +0,0 @@
-# This file was generated by Appraisal
-
-source "https://rubygems.org"
-
-ruby '2.3.3'
-
-group :test do
-  gem "sqlite3"
-end
-
-gemspec path: "../"
diff --git a/gemfiles/ruby_2.4.2.gemfile b/gemfiles/ruby_2.4.2.gemfile
deleted file mode 100644
index 751f9321..00000000
--- a/gemfiles/ruby_2.4.2.gemfile
+++ /dev/null
@@ -1,11 +0,0 @@
-# This file was generated by Appraisal
-
-source "https://rubygems.org"
-
-ruby '2.4.2'
-
-group :test do
-  gem "sqlite3"
-end
-
-gemspec path: "../"
diff --git a/lib/r2-oas/configuration.rb b/lib/r2-oas/configuration.rb
index 94943a9f..bc2855cc 100644
--- a/lib/r2-oas/configuration.rb
+++ b/lib/r2-oas/configuration.rb
@@ -3,17 +3,17 @@
 require 'fileutils'
 
 require_relative 'app_configuration'
-require_relative 'pluggable_configuration'
 require_relative 'configuration/paths_config'
 require_relative 'logger/stdout_logger'
 require_relative 'support/deprecation'
+require_relative 'helpers/file_helper'
 
 module R2OAS
   module Configuration
     extend AppConfiguration
-    extend PluggableConfiguration
+    include Helpers::FileHelper
 
-    PUBLIC_VALID_OPTIONS_KEYS = AppConfiguration::VALID_OPTIONS_KEYS + PluggableConfiguration::VALID_OPTIONS_KEYS
+    PUBLIC_VALID_OPTIONS_KEYS = AppConfiguration::VALID_OPTIONS_KEYS
 
     UNPUBLIC_VALID_OPTIONS_KEYS = %i[
       paths_config
@@ -24,18 +24,8 @@ module Configuration
 
     attr_accessor *PUBLIC_VALID_OPTIONS_KEYS
 
-    # MEMO: override because deprecated
-    def use_object_classes=(data)
-      ::R2OAS::Deprecation.will_remove(<<-MSG.squish)
-        Using a R2OAS.use_object_classes= in configuration is deprecated and
-        will be removed in r2-oas (v0.4.2).
-      MSG
-      @use_object_classes = data
-    end
-
     def self.extended(base)
       base.send :set_default_for_configuration, base
-      base.send :set_default_for_pluggable, base
     end
 
     def configure
@@ -63,17 +53,14 @@ def app_configuration_options
       end
     end
 
-    def pluggable_configuration_options
-      PluggableConfiguration::VALID_OPTIONS_KEYS.inject({}) do |option, key|
-        option.merge!(key => send(key))
-      end
-    end
-
     def load_tasks
       load_local_tasks
     end
 
     def init
+      old_stdout = $stdout
+      $stdout = StringIO.new
+
       plugins_path = File.expand_path("#{root_dir_path}/#{local_plugins_dir_name}")
       plugins_helpers_path = "#{plugins_path}/helpers"
       tasks_path = File.expand_path("#{root_dir_path}/#{local_tasks_dir_name}")
@@ -84,14 +71,21 @@ def init
       gitkeep_tasks_path = "#{tasks_path}/.gitkeep"
       gitkeep_tasks_helpers_path = "#{tasks_helpers_path}/.gitkeep"
 
-      FileUtils.mkdir_p(plugins_helpers_path) unless FileTest.exists?(plugins_helpers_path)
-      FileUtils.mkdir_p(tasks_helpers_path) unless FileTest.exists?(tasks_helpers_path)
+      paths_config.create_dot_paths(false)
+      mkdir_p_dir_or_skip(plugins_helpers_path)
+      mkdir_p_dir_or_skip(tasks_helpers_path)
+      write_file_or_skip(gitkeep_plugins_path, '')
+      write_file_or_skip(gitkeep_plugins_helpers_path, '')
+      write_file_or_skip(gitkeep_tasks_path, '')
+      write_file_or_skip(gitkeep_tasks_helpers_path, '')
+
+      if $stdout.string.present?
+        STDOUT.puts $stdout.string
+      else
+        STDOUT.puts "Already Initialized existing oas_docs in #{root_dir_path}"
+      end
 
-      File.write(gitkeep_plugins_path, '') unless FileTest.exists?(gitkeep_plugins_path)
-      File.write(gitkeep_plugins_helpers_path, '') unless FileTest.exists?(gitkeep_plugins_helpers_path)
-      File.write(gitkeep_tasks_path, '') unless FileTest.exists?(gitkeep_tasks_path)
-      File.write(gitkeep_tasks_helpers_path, '') unless FileTest.exists?(gitkeep_tasks_helpers_path)
-      paths_config.create_dot_paths
+      $stdout = old_stdout
     end
 
     def output_dir_path
@@ -117,9 +111,5 @@ def load_local_plugins
     def set_default_for_configuration(target)
       AppConfiguration.set_default(target)
     end
-
-    def set_default_for_pluggable(target)
-      PluggableConfiguration.set_default(target)
-    end
   end
 end
diff --git a/lib/r2-oas/configuration/paths_config.rb b/lib/r2-oas/configuration/paths_config.rb
index c53e74d8..c4b78a42 100644
--- a/lib/r2-oas/configuration/paths_config.rb
+++ b/lib/r2-oas/configuration/paths_config.rb
@@ -1,10 +1,13 @@
 # frozen_string_literal: true
 
 require 'r2-oas/schema/manager/file/path_item_file_manager'
+require 'r2-oas/helpers/file_helper'
 
 module R2OAS
   module Configuration
     class PathsConfig
+      include Helpers::FileHelper
+
       def initialize(root_dir_path, schema_save_dir_name)
         @root_dir_path = root_dir_path
         @schema_save_dir_path = "#{root_dir_path}/#{schema_save_dir_name}"
@@ -25,11 +28,11 @@ def many_paths_file_paths
         end.uniq.compact.reject(&:empty?)
       end
 
-      def create_dot_paths
+      def create_dot_paths(silent = true)
         abs_root_path = File.expand_path(@root_dir_path)
 
-        FileUtils.mkdir_p(abs_root_path) unless FileTest.exists?(abs_root_path)
-        File.write(abs_paths_path, '') unless FileTest.exists?(abs_paths_path)
+        mkdir_p_dir_or_skip(abs_root_path, silent)
+        write_file_or_skip(abs_paths_path, '', silent)
       end
 
       def many_components_file_paths
diff --git a/lib/r2-oas/dynamic/schema/v3/object/from_routes/hookable_base_object.rb b/lib/r2-oas/dynamic/schema/v3/object/from_routes/hookable_base_object.rb
deleted file mode 100644
index bda482cc..00000000
--- a/lib/r2-oas/dynamic/schema/v3/object/from_routes/hookable_base_object.rb
+++ /dev/null
@@ -1,100 +0,0 @@
-# frozen_string_literal: true
-
-require 'r2-oas/schema/v3/object/from_routes/base_object'
-require 'r2-oas/hooks/hook'
-
-module R2OAS
-  module Dynamic
-    module Schema
-      module V3
-        class HookableBaseObject < R2OAS::Schema::V3::BaseObject
-          module ClassMethods
-            def before_create(&block)
-              proc = (block_given? ? block : proc {})
-              on(:before_create, proc)
-            end
-
-            def after_create(&block)
-              proc = (block_given? ? block : proc {})
-              on(:after_create, proc)
-            end
-          end
-
-          def self.inherited(base)
-            base.extend ClassMethods
-            self.hook = Hooks::Hook.register(:dynamic, base)
-          end
-
-          def self.hooks
-            superclass.hook.repository[:dynamic][self].global_hooks_data
-          end
-
-          def self.hook=(value)
-            @@hook = value
-          end
-
-          def self.hook
-            @@hook
-          end
-
-          class << self
-            def on(on, callback, once = false)
-              hook.on(on, callback, self, once)
-            end
-
-            # MEMO: Do not Use
-            def off(on, callback, once = false)
-              hook.off(on, callback, self, once)
-            end
-
-            def execute_hook(on, *data)
-              hook.execute_hook(on, *data, self)
-            end
-
-            def has_hook?(name)
-              hook.has_hook?(name, self)
-            end
-          end
-
-          attr_accessor :doc
-
-          def initialize(opts = {})
-            super(opts)
-            self.doc = {}
-          end
-
-          # MEMO: Please overwrite when passing arguments other than `doc`
-          def to_doc
-            execute_before_create
-            create_doc
-            execute_after_create
-            doc
-          end
-
-          def use_superclass_hook
-            self.class.hook.repository[:dynamic][self.class] = self.class.hook.repository[:dynamic][self.class.superclass]
-          end
-
-          private
-
-          def create_doc
-            raise NoImplementError
-          end
-
-          def execute_before_create(*data)
-            execute_hook_method(:before_create, *data)
-          end
-
-          def execute_after_create(*data)
-            execute_hook_method(:after_create, *data)
-          end
-
-          def execute_hook_method(method_name, *data)
-            args = [doc].push(*data)
-            self.class.execute_hook(method_name.to_sym, *args) if self.class.has_hook?(method_name.to_sym)
-          end
-        end
-      end
-    end
-  end
-end
diff --git a/lib/r2-oas/helpers/file_helper.rb b/lib/r2-oas/helpers/file_helper.rb
new file mode 100644
index 00000000..e89792ce
--- /dev/null
+++ b/lib/r2-oas/helpers/file_helper.rb
@@ -0,0 +1,68 @@
+# frozen_string_literal: true
+
+require 'fileutils'
+
+# https :/ / keyesberry.hatenadiary.org / entry / 20101107 / p1
+#
+# Text attributes
+# 0	All attributes off
+# 1	Bold on
+# 4	Underscore (on monochrome display adapter only)
+# 5	Blink on
+# 7	Reverse video on
+# 8	Concealed on
+
+# Foreground colors
+# 30	Black
+# 31	Red
+# 32	Green
+# 33	Yellow
+# 34	Blue
+# 35	Magenta
+# 36	Cyan
+# 37	White
+
+# Background colors
+# 40	Black
+# 41	Red
+# 42	Green
+# 43	Yellow
+# 44	Blue
+# 45	Magenta
+# 46	Cyan
+# 47	White
+module R2OAS
+  module Helpers
+    module FileHelper
+      def write_file_or_skip(file_path, data, silent = false)
+        unless FileTest.exists?(file_path)
+          File.write(file_path, data)
+          puts "#{space}#{bold('create')}\t#{relative(file_path)}" unless silent
+        end
+      end
+
+      def mkdir_p_dir_or_skip(dir_path, silent = false)
+        unless FileTest.exists?(dir_path)
+          FileUtils.mkdir_p(dir_path)
+          puts "#{space}#{bold('create')}\t#{relative(dir_path)}" unless silent
+        end
+      end
+
+      private
+
+      def relative(path)
+        current_dir_pathname = Pathname.new(Dir.pwd)
+        target_path = Pathname.new(path)
+        target_path.relative_path_from(current_dir_pathname)
+      end
+
+      def bold(str)
+        "\e[1m#{str}\e[0m"
+      end
+
+      def space
+        '      '
+      end
+    end
+  end
+end
diff --git a/lib/r2-oas/pluggable_configuration.rb b/lib/r2-oas/pluggable_configuration.rb
deleted file mode 100644
index e4aa1f89..00000000
--- a/lib/r2-oas/pluggable_configuration.rb
+++ /dev/null
@@ -1,36 +0,0 @@
-# frozen_string_literal: true
-
-require 'r2-oas/schema/v3/object/from_routes/public'
-require_relative 'support/deprecation'
-
-module R2OAS
-  module PluggableConfiguration
-    # rubocop:disable Style/MutableConstant
-    DEFAULT_USE_OBJECT_CLASSES = {
-      info_object: R2OAS::Schema::V3::InfoObject,
-      paths_object: R2OAS::Schema::V3::PathsObject,
-      path_item_object: R2OAS::Schema::V3::PathItemObject,
-      external_document_object: R2OAS::Schema::V3::ExternalDocumentObject,
-      components_object: R2OAS::Schema::V3::ComponentsObject,
-      components_schema_object: R2OAS::Schema::V3::Components::SchemaObject,
-      components_request_body_object: R2OAS::Schema::V3::Components::RequestBodyObject
-    }
-    # rubocop:enable Style/MutableConstant
-
-    VALID_OPTIONS_KEYS = %i[
-      use_object_classes
-    ].freeze
-
-    attr_reader *VALID_OPTIONS_KEYS
-
-    private
-
-    module_function
-
-    def set_default(target)
-      Deprecation.silence do
-        target.use_object_classes = DEFAULT_USE_OBJECT_CLASSES
-      end
-    end
-  end
-end
diff --git a/lib/r2-oas/plugin/hookable.rb b/lib/r2-oas/plugin/hookable.rb
index 03fed2ff..3594464e 100644
--- a/lib/r2-oas/plugin/hookable.rb
+++ b/lib/r2-oas/plugin/hookable.rb
@@ -5,6 +5,11 @@
 module R2OAS
   module Plugin
     module Hookable
+      def self.extended(base)
+        super
+        base.class_variable_set(:@@hook_klass, ::R2OAS::Hooks::Hook.register(:plugin, base))
+      end
+
       def hooks_map
         hook_klass.repository[:plugin]
       end
@@ -14,11 +19,11 @@ def hooks
       end
 
       def hook_klass=(klass)
-        @@hook_klass = klass
+        class_variable_set(:@@hook_klass, klass)
       end
 
       def hook_klass
-        @@hook_klass
+        class_variable_get(:@@hook_klass)
       end
 
       def on(on, callback, once = false)
diff --git a/lib/r2-oas/public.rb b/lib/r2-oas/public.rb
index cef7cde2..16ecf3ef 100644
--- a/lib/r2-oas/public.rb
+++ b/lib/r2-oas/public.rb
@@ -1,5 +1,3 @@
 # frozen_string_literal: true
 
 require 'r2-oas/configuration'
-require 'r2-oas/errors'
-require 'r2-oas/schema/v3/object/from_routes/public'
diff --git a/lib/r2-oas/schema/editor.rb b/lib/r2-oas/schema/editor.rb
index 71961d13..266aa000 100644
--- a/lib/r2-oas/schema/editor.rb
+++ b/lib/r2-oas/schema/editor.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal:true
 
 require 'docker'
-require 'eventmachine'
+require 'em/pure_ruby'
 require 'watir'
 require 'tempfile'
 require 'fileutils'
diff --git a/lib/r2-oas/schema/monitor.rb b/lib/r2-oas/schema/monitor.rb
index 508122f1..a3b4f341 100644
--- a/lib/r2-oas/schema/monitor.rb
+++ b/lib/r2-oas/schema/monitor.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal:true
 
-require 'eventmachine'
+require 'em/pure_ruby'
 
 # Scope Rails
 module R2OAS
diff --git a/lib/r2-oas/schema/ui.rb b/lib/r2-oas/schema/ui.rb
index c2d1ec39..dd08f241 100644
--- a/lib/r2-oas/schema/ui.rb
+++ b/lib/r2-oas/schema/ui.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal:true
 
 require 'docker'
-require 'eventmachine'
+require 'em/pure_ruby'
 require 'watir'
 require 'forwardable'
 
diff --git a/lib/r2-oas/schema/v3/object/from_routes/public.rb b/lib/r2-oas/schema/v3/object/from_routes/all.rb
similarity index 100%
rename from lib/r2-oas/schema/v3/object/from_routes/public.rb
rename to lib/r2-oas/schema/v3/object/from_routes/all.rb
diff --git a/lib/r2-oas/schema/v3/object/from_routes/base_object.rb b/lib/r2-oas/schema/v3/object/from_routes/base_object.rb
index 392fbb68..067cef46 100644
--- a/lib/r2-oas/schema/v3/object/from_routes/base_object.rb
+++ b/lib/r2-oas/schema/v3/object/from_routes/base_object.rb
@@ -16,40 +16,16 @@ def initialize(opts = {})
             send("#{key}=", app_configuration_options[key])
           end
 
-          PluggableConfiguration::VALID_OPTIONS_KEYS.each do |key|
-            instance_variable_set(:"@#{key}", pluggable_configuration_options[key])
-          end
-
           @opts = opts
           @plugin_executor = ::R2OAS::Plugin::Executor.new(@plugins, opts)
         end
 
-        def info_object_class
-          @use_object_classes[:info_object]
-        end
-
-        def paths_object_class
-          @use_object_classes[:paths_object]
-        end
-
-        def path_item_object_class
-          @use_object_classes[:path_item_object]
-        end
-
-        def external_document_object_class
-          @use_object_classes[:external_document_object]
-        end
-
-        def components_object_class
-          @use_object_classes[:components_object]
+        def doc
+          @doc ||= {}
         end
 
-        def components_schema_object_class
-          @use_object_classes[:components_schema_object]
-        end
-
-        def components_request_body_object_class
-          @use_object_classes[:components_request_body_object]
+        def to_doc
+          raise 'Implement Inherit Class'
         end
 
         private
@@ -58,17 +34,7 @@ def app_configuration_options
           R2OAS.app_configuration_options
         end
 
-        def pluggable_configuration_options
-          R2OAS.pluggable_configuration_options
-        end
-
-        # Can not define attr_accessor for PluggableConfiguration::VALID_OPTIONS_KEYS.
-        # Because, PuggableConfiguration module is not loaded when this class is loaded.
         attr_accessor *AppConfiguration::VALID_OPTIONS_KEYS
-
-        def to_doc
-          raise 'Implement Inherit Class'
-        end
       end
     end
   end
diff --git a/lib/r2-oas/schema/v3/object/from_routes/components/request_body_object.rb b/lib/r2-oas/schema/v3/object/from_routes/components/request_body_object.rb
index 648863cf..82d846c6 100644
--- a/lib/r2-oas/schema/v3/object/from_routes/components/request_body_object.rb
+++ b/lib/r2-oas/schema/v3/object/from_routes/components/request_body_object.rb
@@ -1,13 +1,14 @@
 # frozen_string_literal: true
 
-require 'r2-oas/dynamic/schema/v3/object/from_routes/hookable_base_object'
+require 'r2-oas/schema/v3/object/from_routes/base_object'
 require 'r2-oas/schema/v3/manager/file/components_file_manager'
+require_relative 'schema_object'
 
 module R2OAS
   module Schema
     module V3
       module Components
-        class RequestBodyObject < R2OAS::Dynamic::Schema::V3::HookableBaseObject
+        class RequestBodyObject < R2OAS::Schema::V3::BaseObject
           def initialize(route_data, path, opts = {})
             super(opts)
             @path_comp   = Routing::PathComponent.new(path)
@@ -23,10 +24,9 @@ def initialize(route_data, path, opts = {})
           end
 
           def to_doc
-            execute_before_create(@schema_name)
             create_doc do
               child_file_manager = ComponentsFileManager.new("#/components/schemas/#{_components_schema_name}", :ref)
-              schema_object = components_schema_object_class.new(@route_data, @path, @opts)
+              schema_object = Components::SchemaObject.new(@route_data, @path, @opts)
 
               unless child_file_manager.skip_save?
                 result = {
@@ -45,22 +45,9 @@ def to_doc
                 )
               end
             end
-            execute_after_create(@schema_name)
             doc
           end
 
-          # MEMO:
-          # please override in inherited class.
-          def components_schema_name(_doc, _path_component, _tag_name, _verb, schema_name)
-            schema_name
-          end
-
-          # MEMO:
-          # please override in inherited class.
-          def components_request_body_name(_doc, _path_component, _tag_name, _verb, schema_name)
-            schema_name
-          end
-
           def generate?
             file_manager = ComponentsFileManager.new("#/components/schemas/#{_components_schema_name}", :ref)
             (@verb.in? http_methods_when_generate_request_body) && !file_manager.skip_save?
@@ -83,11 +70,11 @@ def create_doc
           end
 
           def _components_schema_name
-            components_schema_name(doc, @path_comp, @tag_name, @verb, @schema_name)
+            @schema_name
           end
 
           def _components_request_body_name
-            components_request_body_name(doc, @path_comp, @tag_name, @verb, @schema_name)
+            @schema_name
           end
         end
       end
diff --git a/lib/r2-oas/schema/v3/object/from_routes/components/schema_object.rb b/lib/r2-oas/schema/v3/object/from_routes/components/schema_object.rb
index 40630a85..7a121913 100644
--- a/lib/r2-oas/schema/v3/object/from_routes/components/schema_object.rb
+++ b/lib/r2-oas/schema/v3/object/from_routes/components/schema_object.rb
@@ -1,12 +1,12 @@
 # frozen_string_literal: true
 
-require 'r2-oas/dynamic/schema/v3/object/from_routes/hookable_base_object'
+require 'r2-oas/schema/v3/object/from_routes/base_object'
 
 module R2OAS
   module Schema
     module V3
       module Components
-        class SchemaObject < R2OAS::Dynamic::Schema::V3::HookableBaseObject
+        class SchemaObject < R2OAS::Schema::V3::BaseObject
           def initialize(route_data, path, opts = {})
             super(opts)
             @path_comp    = Routing::PathComponent.new(path)
@@ -22,18 +22,10 @@ def initialize(route_data, path, opts = {})
           end
 
           def to_doc
-            execute_before_create(@schema_name)
             create_doc
-            execute_after_create(@schema_name)
             doc
           end
 
-          # MEMO:
-          # please override in inherited class.
-          def components_schema_name(_doc, _path_component, _tag_name, _verb, _http_status, schema_name)
-            schema_name
-          end
-
           private
 
           def create_doc
@@ -49,8 +41,8 @@ def create_doc
             doc.merge!(result)
           end
 
-          def _components_schema_name(http_status)
-            components_schema_name(doc, @path_comp, @tag_name, @verb, http_status, @schema_name)
+          def _components_schema_name(_http_status)
+            @schema_name
           end
         end
       end
diff --git a/lib/r2-oas/schema/v3/object/from_routes/components_object.rb b/lib/r2-oas/schema/v3/object/from_routes/components_object.rb
index 40282158..ef05fcba 100644
--- a/lib/r2-oas/schema/v3/object/from_routes/components_object.rb
+++ b/lib/r2-oas/schema/v3/object/from_routes/components_object.rb
@@ -1,18 +1,24 @@
 # frozen_string_literal: true
 
-require 'r2-oas/dynamic/schema/v3/object/from_routes/hookable_base_object'
+require_relative 'base_object'
 require_relative 'components/schema_object'
 require_relative 'components/request_body_object'
+require_relative 'path_item_object'
 
 module R2OAS
   module Schema
     module V3
-      class ComponentsObject < R2OAS::Dynamic::Schema::V3::HookableBaseObject
+      class ComponentsObject < BaseObject
         def initialize(routes_data, opts = {})
           super(opts)
           @routes_data = routes_data
         end
 
+        def to_doc
+          create_doc
+          doc
+        end
+
         def create_doc
           create_doc_for_components_schemas!
           create_doc_for_components_request_bodies!
@@ -24,14 +30,14 @@ def create_doc_for_components_schemas!
           result = components_schema_docs.each_with_object({}) do |(schema_name, components_schema_doc), docs|
             docs[schema_name] = components_schema_doc
           end
-          doc.merge!('schemas' => result)
+          doc.merge!({ 'schemas' => result })
         end
 
         def create_doc_for_components_request_bodies!
           result = components_request_body_docs.each_with_object({}) do |(schema_name, components_request_body_doc), docs|
             docs[schema_name] = components_request_body_doc
           end
-          doc.merge!('requestBodies' => result)
+          doc.merge!({ 'requestBodies' => result })
         end
 
         # e.x.)
@@ -43,9 +49,9 @@ def components_schema_docs
             path = route_el[:path]
             route_data = route_el[:data]
 
-            path_item_object = path_item_object_class.new(route_data, path, @opts)
+            path_item_object = PathItemObject.new(route_data, path, @opts)
             path_item_object.http_statuses.each do |http_status|
-              components_schema_object = components_schema_object_class.new(route_data, path, @opts)
+              components_schema_object = Components::SchemaObject.new(route_data, path, @opts)
               components_schema_doc = components_schema_object.to_doc
               schema_name = components_schema_object.send(:_components_schema_name, http_status)
 
@@ -63,7 +69,7 @@ def components_request_body_docs
             path = route_el[:path]
             route_data = route_el[:data]
 
-            components_request_body_object = components_request_body_object_class.new(route_data, path, @opts)
+            components_request_body_object = Components::RequestBodyObject.new(route_data, path, @opts)
             next unless components_request_body_object.generate?
 
             components_request_body_doc = components_request_body_object.to_doc
diff --git a/lib/r2-oas/schema/v3/object/from_routes/external_document_object.rb b/lib/r2-oas/schema/v3/object/from_routes/external_document_object.rb
index 8e86ce89..db3752dc 100644
--- a/lib/r2-oas/schema/v3/object/from_routes/external_document_object.rb
+++ b/lib/r2-oas/schema/v3/object/from_routes/external_document_object.rb
@@ -1,15 +1,13 @@
 # frozen_string_literal: true
 
-require 'r2-oas/dynamic/schema/v3/object/from_routes/hookable_base_object'
+require_relative 'base_object'
 
 module R2OAS
   module Schema
     module V3
-      class ExternalDocumentObject < R2OAS::Dynamic::Schema::V3::HookableBaseObject
+      class ExternalDocumentObject < BaseObject
         def to_doc
-          execute_before_create
           create_doc
-          execute_after_create
           doc
         end
 
diff --git a/lib/r2-oas/schema/v3/object/from_routes/info_object.rb b/lib/r2-oas/schema/v3/object/from_routes/info_object.rb
index 298c3035..d1a49c59 100644
--- a/lib/r2-oas/schema/v3/object/from_routes/info_object.rb
+++ b/lib/r2-oas/schema/v3/object/from_routes/info_object.rb
@@ -1,15 +1,13 @@
 # frozen_string_literal: true
 
-require 'r2-oas/dynamic/schema/v3/object/from_routes/hookable_base_object'
+require_relative 'base_object'
 
 module R2OAS
   module Schema
     module V3
-      class InfoObject < R2OAS::Dynamic::Schema::V3::HookableBaseObject
+      class InfoObject < BaseObject
         def to_doc
-          execute_before_create
           create_doc
-          execute_after_create
           doc
         end
 
diff --git a/lib/r2-oas/schema/v3/object/from_routes/openapi_object.rb b/lib/r2-oas/schema/v3/object/from_routes/openapi_object.rb
index 16506024..32e0723b 100644
--- a/lib/r2-oas/schema/v3/object/from_routes/openapi_object.rb
+++ b/lib/r2-oas/schema/v3/object/from_routes/openapi_object.rb
@@ -3,6 +3,10 @@
 require_relative 'base_object'
 require_relative 'tag_object'
 require_relative 'server_object'
+require_relative 'info_object'
+require_relative 'external_document_object'
+require_relative 'components_object'
+require_relative 'paths_object'
 
 module R2OAS
   module Schema
@@ -25,13 +29,13 @@ def to_doc
             'servers' => servers_doc,
             'components' => components_doc
           }
-          result
+          doc.merge!(result)
         end
 
         private
 
         def info_doc
-          info_object_class.new(@opts).to_doc
+          InfoObject.new(@opts).to_doc
         end
 
         def tags_doc
@@ -39,11 +43,11 @@ def tags_doc
         end
 
         def paths_doc
-          paths_object_class.new(@routes_data, @opts).to_doc
+          PathsObject.new(@routes_data, @opts).to_doc
         end
 
         def external_docs_doc
-          external_document_object_class.new(@opts).to_doc
+          ExternalDocumentObject.new(@opts).to_doc
         end
 
         def servers_doc
@@ -51,7 +55,7 @@ def servers_doc
         end
 
         def components_doc
-          components_object_class.new(@routes_data, @opts).to_doc
+          ComponentsObject.new(@routes_data, @opts).to_doc
         end
       end
     end
diff --git a/lib/r2-oas/schema/v3/object/from_routes/path_item_object.rb b/lib/r2-oas/schema/v3/object/from_routes/path_item_object.rb
index 714f6783..a8b0904c 100644
--- a/lib/r2-oas/schema/v3/object/from_routes/path_item_object.rb
+++ b/lib/r2-oas/schema/v3/object/from_routes/path_item_object.rb
@@ -1,13 +1,15 @@
 # frozen_string_literal: true
 
 require 'forwardable'
-require 'r2-oas/dynamic/schema/v3/object/from_routes/hookable_base_object'
 require 'r2-oas/routing/components/path_component'
+require_relative 'base_object'
+require_relative 'components/schema_object'
+require_relative 'components/request_body_object'
 
 module R2OAS
   module Schema
     module V3
-      class PathItemObject < R2OAS::Dynamic::Schema::V3::HookableBaseObject
+      class PathItemObject < BaseObject
         extend Forwardable
         # reference
         # https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.0.md#path-item-object
@@ -27,15 +29,13 @@ def initialize(route_data, path, opts = {})
           @required_parameters            = route_data[:required_parameters]
           @format_name                    = create_format_name
           @http_status_manager            = HttpStatusManager.new(@path, @verb, http_statuses_when_http_method)
-          @components_schema_object       = components_schema_object_class.new(route_data, path, opts)
-          @components_request_body_object = components_request_body_object_class.new(route_data, path, opts)
+          @components_schema_object       = Components::SchemaObject.new(route_data, path, opts)
+          @components_request_body_object = Components::RequestBodyObject.new(route_data, path, opts)
           support_field_name? if route_data.key?(:verb)
         end
 
         def to_doc
-          execute_before_create(@path)
           create_doc
-          execute_after_create(@path)
           doc
         end
 
diff --git a/lib/r2-oas/schema/v3/object/from_routes/paths_object.rb b/lib/r2-oas/schema/v3/object/from_routes/paths_object.rb
index 0915773e..55ffbb5f 100644
--- a/lib/r2-oas/schema/v3/object/from_routes/paths_object.rb
+++ b/lib/r2-oas/schema/v3/object/from_routes/paths_object.rb
@@ -1,23 +1,28 @@
 # frozen_string_literal: true
 
-require 'r2-oas/dynamic/schema/v3/object/from_routes/hookable_base_object'
 require 'r2-oas/routing/components/path_component'
+require_relative 'base_object'
+require_relative 'path_item_object'
 
 module R2OAS
   module Schema
     module V3
-      class PathsObject < R2OAS::Dynamic::Schema::V3::HookableBaseObject
+      class PathsObject < BaseObject
         def initialize(routes_data, opts = {})
           super(opts)
           @routes_data = routes_data
-          define_hookable_tmp_object_class
+        end
+
+        def to_doc
+          create_doc
+          doc
         end
 
         def create_doc
           if unit_paths_file_path.present?
             unit_paths_data = YAML.load_file(unit_paths_file_path)['paths']
             result = unit_paths_data.each_with_object({}) do |(path, path_item_doc), docs|
-              docs[path] = HookableTmpObjectClass.new(path_item_doc, path, @opts).to_doc
+              docs[path] = PathItemObject.new(path_item_doc, path, @opts).to_doc
             end
           else
             result = path_item_docs.each_with_object({}) do |(path, path_item_doc), docs|
@@ -29,31 +34,6 @@ def create_doc
 
         private
 
-        def define_hookable_tmp_object_class
-          klass = Class.new(path_item_object_class) do |_c|
-            def initialize(data, path, opts = {})
-              super(opts)
-              @data = data
-              @path = path
-              @path_comp = Routing::PathComponent.new(path)
-              use_superclass_hook
-            end
-
-            def create_doc
-              doc.merge!(@data)
-            end
-
-            def to_doc
-              execute_before_create(@path)
-              create_doc
-              execute_after_create(@path)
-              execute_transform_plugins(:path_item, doc, @path_comp)
-              doc
-            end
-          end
-          Object.const_set(:HookableTmpObjectClass, klass) unless defined?(HookableTmpObjectClass)
-        end
-
         def path_item_docs
           # e.x.)
           # [
@@ -63,7 +43,7 @@ def path_item_docs
             path = route_el[:path]
             route_data = route_el[:data]
 
-            path_item_doc = path_item_object_class.new(route_data, path, @opts).to_doc
+            path_item_doc = PathItemObject.new(route_data, path, @opts).to_doc
             if data[path].present?
               data[path].merge!(path_item_doc)
             else
diff --git a/lib/r2-oas/tasks/main.rake b/lib/r2-oas/tasks/main.rake
index 2d0b24c6..3460638d 100644
--- a/lib/r2-oas/tasks/main.rake
+++ b/lib/r2-oas/tasks/main.rake
@@ -10,9 +10,8 @@ load File.expand_path('common.rake', __dir__)
 namespace :routes do
   namespace :oas do
     desc '[R2-OAS] Initialize'
-    task init: [:common] do
+    task :init do
       R2OAS.init
-      puts '[R2-OAS] Initialized!'
     end
 
     desc '[R2-OAS] Generate OAS documentation files'
diff --git a/lib/r2-oas/version.rb b/lib/r2-oas/version.rb
index 7b32085e..10b6dfdc 100644
--- a/lib/r2-oas/version.rb
+++ b/lib/r2-oas/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module R2OAS
-  VERSION = '0.4.1'
+  VERSION = '0.5.0'
 end
diff --git a/r2-oas.gemspec b/r2-oas.gemspec
index 5779a4d9..fe2d1394 100644
--- a/r2-oas.gemspec
+++ b/r2-oas.gemspec
@@ -27,7 +27,7 @@ Gem::Specification.new do |spec|
   spec.bindir        = 'exe'
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ['lib']
-  spec.required_ruby_version = Gem::Requirement.new('>= 2.3.3p222')
+  spec.required_ruby_version = Gem::Requirement.new('>= 2.5.0')
 
   spec.add_runtime_dependency 'docker-api', '>= 1.34.2'
   spec.add_runtime_dependency 'easy_diff', '>= 1.0.0'
diff --git a/spec/r2-oas/configuration_spec.rb b/spec/r2-oas/configuration_spec.rb
index 92a82673..22c1d151 100644
--- a/spec/r2-oas/configuration_spec.rb
+++ b/spec/r2-oas/configuration_spec.rb
@@ -4,18 +4,6 @@
 
 RSpec.describe R2OAS::Configuration do
   describe 'configure' do
-    before(:all) do
-      class RtsdInfoObject < R2OAS::Schema::V3::InfoObject; end
-      class RtsdPathsObject < R2OAS::Schema::V3::PathsObject; end
-      class RtsdPathItemObject < R2OAS::Schema::V3::PathItemObject; end
-      class RtsdExternalDocumentObject < R2OAS::Schema::V3::ExternalDocumentObject; end
-      class RtsdComponentsObject < R2OAS::Schema::V3::ComponentsObject; end
-      module Components
-        class RtsdSchemaObject < R2OAS::Schema::V3::Components::SchemaObject; end
-        class RtsdRequestBodyObject < R2OAS::Schema::V3::Components::RequestBodyObject; end
-      end
-    end
-
     context 'when default setting' do
       before do
         class DefaultDummy
@@ -56,14 +44,6 @@ class DefaultDummy
         expect(subject[:swagger].editor.image).to eq 'swaggerapi/swagger-editor'
         expect(subject[:swagger].editor.port).to eq '81'
         expect(subject[:swagger].editor.exposed_port).to eq '8080/tcp'
-        # object classes
-        expect(subject[:use_object_classes][:info_object]).to eq R2OAS::Schema::V3::InfoObject
-        expect(subject[:use_object_classes][:paths_object]).to eq R2OAS::Schema::V3::PathsObject
-        expect(subject[:use_object_classes][:path_item_object]).to eq R2OAS::Schema::V3::PathItemObject
-        expect(subject[:use_object_classes][:external_document_object]).to eq R2OAS::Schema::V3::ExternalDocumentObject
-        expect(subject[:use_object_classes][:components_object]).to eq R2OAS::Schema::V3::ComponentsObject
-        expect(subject[:use_object_classes][:components_schema_object]).to eq R2OAS::Schema::V3::Components::SchemaObject
-        expect(subject[:use_object_classes][:components_request_body_object]).to eq R2OAS::Schema::V3::Components::RequestBodyObject
         # plugin configuration
         expect(subject[:plugins]).to eq []
         expect(subject[:local_plugins_dir_name]).to eq 'plugins'
@@ -131,16 +111,6 @@ class CustomDummy
               swagger.editor.port         = '91'
               swagger.editor.exposed_port = '9090/tcp'
             end
-            # object classes
-            config.use_object_classes = {
-              info_object: RtsdInfoObject,
-              paths_object: RtsdPathsObject,
-              path_item_object: RtsdPathItemObject,
-              external_document_object: RtsdExternalDocumentObject,
-              components_object: RtsdComponentsObject,
-              components_schema_object: Components::RtsdSchemaObject,
-              components_request_body_object: Components::RtsdRequestBodyObject
-            }
             # plugins configuration
             config.plugins = [
               ['r2oas-plugin-transform-sample', { loose: false }],
@@ -190,14 +160,6 @@ class CustomDummy
         expect(subject[:swagger].editor.image).to eq 'original/swagger-editor'
         expect(subject[:swagger].editor.port).to eq '91'
         expect(subject[:swagger].editor.exposed_port).to eq '9090/tcp'
-        # object classes
-        expect(subject[:use_object_classes][:info_object]).to eq RtsdInfoObject
-        expect(subject[:use_object_classes][:paths_object]).to eq RtsdPathsObject
-        expect(subject[:use_object_classes][:path_item_object]).to eq RtsdPathItemObject
-        expect(subject[:use_object_classes][:external_document_object]).to eq RtsdExternalDocumentObject
-        expect(subject[:use_object_classes][:components_object]).to eq RtsdComponentsObject
-        expect(subject[:use_object_classes][:components_schema_object]).to eq Components::RtsdSchemaObject
-        expect(subject[:use_object_classes][:components_request_body_object]).to eq Components::RtsdRequestBodyObject
         # plugin configuration
         expect(subject[:plugins]).to include(
           ['r2oas-plugin-transform-sample', { loose: false }],
@@ -209,28 +171,9 @@ class CustomDummy
         expect(subject[:deprecation].silenced).to eq true
       end
     end
+  end
 
-    context 'deprecation warning' do
-      context 'when deprecation.silenced is false (default)' do
-        it do
-          expect do
-            R2OAS.configure do |config|
-              config.use_object_classes = {}
-            end
-          end.to output(/DEPRECATION WARNING: Using a R2OAS.use_object_classes= in configuration is deprecated and will be removed in r2-oas \(v0.4.2\)./).to_stderr
-        end
-      end
-
-      context 'when deprecation.silenced is true' do
-        it do
-          expect do
-            R2OAS.configure do |config|
-              config.deprecation.silenced = true
-              config.use_object_classes = {}
-            end
-          end.not_to output(/DEPRECATION WARNING: Using a R2OAS.use_object_classes= in configuration is deprecated and will be removed in r2-oas \(v0.4.2\)./).to_stderr
-        end
-      end
-    end
+  describe 'init' do
+    it { expect { described_class.init }.not_to raise_error }
   end
 end
diff --git a/spec/r2-oas/schema/v3/object/from_files/utils/refs_spec.rb b/spec/r2-oas/schema/v3/object/from_files/utils/refs_spec.rb
index 427d7ac1..26ff5430 100644
--- a/spec/r2-oas/schema/v3/object/from_files/utils/refs_spec.rb
+++ b/spec/r2-oas/schema/v3/object/from_files/utils/refs_spec.rb
@@ -82,8 +82,8 @@
 
   context 'when error not occurs' do
     it do
-      expect { subject.schema_name = 'API_V1_Task_200_GET' }.not_to raise_error(NoMethodError)
-      expect { subject[:schema_name] = 'API_V1_Task_200_GET' }.not_to raise_error(R2OAS::RefInvalidAssignment)
+      expect { subject.schema_name = 'API_V1_Task_200_GET' }.not_to raise_error
+      expect { subject[:schema_name] = 'API_V1_Task_200_GET' }.not_to raise_error
     end
   end
 end
diff --git a/spec/r2-oas/schema/v3/object/from_routes/base_object_spec.rb b/spec/r2-oas/schema/v3/object/from_routes/base_object_spec.rb
index 4782d14c..3136c280 100644
--- a/spec/r2-oas/schema/v3/object/from_routes/base_object_spec.rb
+++ b/spec/r2-oas/schema/v3/object/from_routes/base_object_spec.rb
@@ -5,7 +5,6 @@
 RSpec.describe R2OAS::Schema::V3::BaseObject do
   let(:object) { described_class.new }
   let(:swagger) { object.send(:swagger) }
-  let(:use_object_classes) { object.instance_variable_get(:@use_object_classes) }
   let(:http_statuses_when_http_method) { object.send(:http_statuses_when_http_method) }
 
   describe '.initialize' do
@@ -27,13 +26,6 @@
       it { expect(swagger.editor.image).to eq 'swaggerapi/swagger-editor' }
       it { expect(swagger.editor.port).to eq '81' }
       it { expect(swagger.editor.exposed_port).to eq '8080/tcp' }
-      it { expect(use_object_classes[:info_object]).to eq R2OAS::Schema::V3::InfoObject }
-      it { expect(use_object_classes[:paths_object]).to eq R2OAS::Schema::V3::PathsObject }
-      it { expect(use_object_classes[:path_item_object]).to eq R2OAS::Schema::V3::PathItemObject }
-      it { expect(use_object_classes[:external_document_object]).to eq R2OAS::Schema::V3::ExternalDocumentObject }
-      it { expect(use_object_classes[:components_object]).to eq R2OAS::Schema::V3::ComponentsObject }
-      it { expect(use_object_classes[:components_schema_object]).to eq R2OAS::Schema::V3::Components::SchemaObject }
-      it { expect(use_object_classes[:components_request_body_object]).to eq R2OAS::Schema::V3::Components::RequestBodyObject }
       it { expect(http_statuses_when_http_method[:get]).to eq default: %w[200 422], path_parameter: %w[200 404 422] }
       it { expect(http_statuses_when_http_method[:post]).to eq default: %w[201 422], path_parameter: %w[201 404 422] }
       it { expect(http_statuses_when_http_method[:patch]).to eq default: %w[204 422], path_parameter: %w[204 404 422] }
@@ -43,49 +35,15 @@
     end
 
     context 'when override settings' do
-      let(:info_object_class) { double('TestInfoObjectClass') }
-
       before do
         R2OAS.configure do |config|
           config.namespace_type = :dot
           config.doc_save_file_name = 'apidoc.yml'
-          config.use_object_classes.merge!(
-            info_object: info_object_class
-          )
         end
       end
 
       it { expect(object.send(:namespace_type)).to eq :dot }
       it { expect(object.send(:doc_save_file_name)).to eq 'apidoc.yml' }
-      it { expect(use_object_classes[:info_object]).to eq info_object_class }
     end
   end
-
-  describe '#info_object_class' do
-    it { expect(object.info_object_class).to eq R2OAS::Schema::V3::InfoObject }
-  end
-
-  describe '#paths_object_class' do
-    it { expect(object.paths_object_class).to eq R2OAS::Schema::V3::PathsObject }
-  end
-
-  describe '#path_item_object_class' do
-    it { expect(object.path_item_object_class).to eq R2OAS::Schema::V3::PathItemObject }
-  end
-
-  describe '#external_document_object_class' do
-    it { expect(object.external_document_object_class).to eq R2OAS::Schema::V3::ExternalDocumentObject }
-  end
-
-  describe '#components_object_class' do
-    it { expect(object.components_object_class).to eq R2OAS::Schema::V3::ComponentsObject }
-  end
-
-  describe '#components_schema_object_class' do
-    it { expect(object.components_schema_object_class).to eq R2OAS::Schema::V3::Components::SchemaObject }
-  end
-
-  describe '#components_request_body_object_class' do
-    it { expect(object.components_request_body_object_class).to eq R2OAS::Schema::V3::Components::RequestBodyObject }
-  end
 end
diff --git a/spec/r2-oas/schema/v3/object/from_routes/components/request_body_object_spec.rb b/spec/r2-oas/schema/v3/object/from_routes/components/request_body_object_spec.rb
index e02c6138..bcd1cf20 100644
--- a/spec/r2-oas/schema/v3/object/from_routes/components/request_body_object_spec.rb
+++ b/spec/r2-oas/schema/v3/object/from_routes/components/request_body_object_spec.rb
@@ -8,7 +8,7 @@
     { format_name: '', path: '/api/v1/tasks/{id}', required_parameters: { id: { type: 'integer' } }, schema_name: 'Api_V1_Task', tag_name: 'api/v1/task', verb: 'patch' }
   end
   let(:opts) { {} }
-  let(:object) { R2OAS.use_object_classes[:components_request_body_object].new(route_data, path, opts) }
+  let(:object) { described_class.new(route_data, path, opts) }
 
   before do
     init
@@ -28,35 +28,6 @@
            'data' => { 'components' => { 'schemas' => { 'Api_V1_Task' => { 'type' => 'object', 'properties' => { 'id' => { 'type' => 'integer', 'format' => 'int64' } } } } } } }
       end
     end
-
-    context 'when use before_create && after_create' do
-      before do
-        module Components
-          class TestRequestBodyObject < R2OAS::Schema::V3::Components::RequestBodyObject
-            before_create do |doc, _schema_name|
-              doc.merge!(
-                'before_key' => 'before_value'
-              )
-            end
-
-            after_create do |doc, _schema_name|
-              doc.merge!(
-                'after_key' => 'after_value'
-              )
-            end
-          end
-        end
-
-        R2OAS.configure do |config|
-          config.use_object_classes.merge!(
-            components_request_body_object: Components::TestRequestBodyObject
-          )
-        end
-      end
-
-      it { expect(object.to_doc['before_key']).to eq 'before_value' }
-      it { expect(object.to_doc['after_key']).to eq 'after_value' }
-    end
   end
 
   describe '#create_doc (private)' do
diff --git a/spec/r2-oas/schema/v3/object/from_routes/components/schema_object_spec.rb b/spec/r2-oas/schema/v3/object/from_routes/components/schema_object_spec.rb
index d4c5eb82..81cd0b72 100644
--- a/spec/r2-oas/schema/v3/object/from_routes/components/schema_object_spec.rb
+++ b/spec/r2-oas/schema/v3/object/from_routes/components/schema_object_spec.rb
@@ -8,7 +8,7 @@
     { format_name: '', path: '/api/v1/tasks/{id}', required_parameters: { id: { type: 'integer' } }, schema_name: 'Api_V1_Task', tag_name: 'api/v1/task', verb: 'patch' }
   end
   let(:opts) { {} }
-  let(:object) { R2OAS.use_object_classes[:components_schema_object].new(route_data, path, opts) }
+  let(:object) { described_class.new(route_data, path, opts) }
 
   before do
     init
@@ -24,35 +24,6 @@
         expect(object.to_doc).to eq 'properties' => { 'id' => { 'format' => 'int64', 'type' => 'integer' } }, 'type' => 'object'
       end
     end
-
-    context 'when use before_create && after_create' do
-      before do
-        module Components
-          class TestSchemaObject < R2OAS::Schema::V3::Components::SchemaObject
-            before_create do |doc, _schema_name|
-              doc.merge!(
-                'before_key' => 'before_value'
-              )
-            end
-
-            after_create do |doc, _schema_name|
-              doc.merge!(
-                'after_key' => 'after_value'
-              )
-            end
-          end
-        end
-
-        R2OAS.configure do |config|
-          config.use_object_classes.merge!(
-            components_schema_object: Components::TestSchemaObject
-          )
-        end
-      end
-
-      it { expect(object.to_doc['before_key']).to eq 'before_value' }
-      it { expect(object.to_doc['after_key']).to eq 'after_value' }
-    end
   end
 
   describe '#create_doc (private)' do
@@ -60,40 +31,4 @@ class TestSchemaObject < R2OAS::Schema::V3::Components::SchemaObject
       expect(object.send(:create_doc)).to eq 'properties' => { 'id' => { 'format' => 'int64', 'type' => 'integer' } }, 'type' => 'object'
     end
   end
-
-  describe '#components_schema_name' do
-    before do
-      module Components
-        class TestSchemaObject2 < R2OAS::Schema::V3::Components::SchemaObject
-          NS_DIV = '_'
-          # e.x.)
-          # GET(200) /v1/tasks/{id} => V1_Task_P1_GET_200
-          def components_schema_name(_doc, path_component, tag_name, verb, http_status, _schema_name)
-            path_parameters_count = path_component.path_parameters.count
-            excluded_path_parameters = path_component.path_excluded_path_parameters
-            excluded_path_parameters_arr = excluded_path_parameters.split('/').delete_if(&:empty?)
-            base_schema_name = excluded_path_parameters.split('/').map(&:singularize).map(&:camelize).join(NS_DIV)
-
-            base_schema_name = tag_name.split('/').map(&:singularize).map(&:camelize).join(NS_DIV) + base_schema_name if excluded_path_parameters.eql? '' || excluded_path_parameters_arr.count == 1
-
-            if path_parameters_count.zero?
-              [base_schema_name, verb.upcase, http_status].join(NS_DIV)
-            else
-              [base_schema_name, "P#{path_parameters_count}", verb.upcase, http_status].join(NS_DIV)
-            end
-          end
-        end
-
-        R2OAS.configure do |config|
-          config.use_object_classes.merge!(
-            components_schema_object: Components::TestSchemaObject2
-          )
-        end
-      end
-    end
-
-    it do
-      expect(object.send(:_components_schema_name, '204')).to eq 'Api_V1_Task_P1_PATCH_204'
-    end
-  end
 end
diff --git a/spec/r2-oas/schema/v3/object/from_routes/components_object_spec.rb b/spec/r2-oas/schema/v3/object/from_routes/components_object_spec.rb
index d4d185d2..9f5d7896 100644
--- a/spec/r2-oas/schema/v3/object/from_routes/components_object_spec.rb
+++ b/spec/r2-oas/schema/v3/object/from_routes/components_object_spec.rb
@@ -12,7 +12,7 @@
       { data: { format_name: '', path: '/api/v1/tasks/{id}', required_parameters: { id: { type: 'integer' } }, schema_name: 'Api_V1_Task', tag_name: 'api/v1/task', verb: 'delete' }, path: '/api/v1/tasks/{id}' }
     ]
   end
-  let(:object) { R2OAS.use_object_classes[:components_object].new(routes_data) }
+  let(:object) { described_class.new(routes_data) }
 
   before do
     init
@@ -22,35 +22,6 @@
     delete_oas_docs
   end
 
-  describe '#to_doc' do
-    context 'when use before_create && after_create' do
-      before do
-        class TestComponentsObject < R2OAS::Schema::V3::ComponentsObject
-          before_create do |doc|
-            doc.merge!(
-              'before_key' => 'before_value'
-            )
-          end
-
-          after_create do |doc|
-            doc.merge!(
-              'after_key' => 'after_value'
-            )
-          end
-        end
-
-        R2OAS.configure do |config|
-          config.use_object_classes.merge!(
-            components_object: TestComponentsObject
-          )
-        end
-      end
-
-      it { expect(object.to_doc['before_key']).to eq 'before_value' }
-      it { expect(object.to_doc['after_key']).to eq 'after_value' }
-    end
-  end
-
   describe '#create_doc' do
     context 'when default' do
       it do
diff --git a/spec/r2-oas/schema/v3/object/from_routes/external_document_object_spec.rb b/spec/r2-oas/schema/v3/object/from_routes/external_document_object_spec.rb
index 4b2f944c..0c9bcfa2 100644
--- a/spec/r2-oas/schema/v3/object/from_routes/external_document_object_spec.rb
+++ b/spec/r2-oas/schema/v3/object/from_routes/external_document_object_spec.rb
@@ -4,36 +4,7 @@
 
 RSpec.describe R2OAS::Schema::V3::ExternalDocumentObject do
   let(:opts) { {} }
-  let(:object) { R2OAS.use_object_classes[:external_document_object].new(opts) }
-
-  describe '#to_doc' do
-    context 'when use before_create && after_create' do
-      before do
-        class TestExternalDocumentObject < R2OAS::Schema::V3::ExternalDocumentObject
-          before_create do |doc|
-            doc.merge!(
-              'before_key' => 'before_value'
-            )
-          end
-
-          after_create do |doc|
-            doc.merge!(
-              'after_key' => 'after_value'
-            )
-          end
-        end
-
-        R2OAS.configure do |config|
-          config.use_object_classes.merge!(
-            external_document_object: TestExternalDocumentObject
-          )
-        end
-      end
-
-      it { expect(object.to_doc['before_key']).to eq 'before_value' }
-      it { expect(object.to_doc['after_key']).to eq 'after_value' }
-    end
-  end
+  let(:object) { described_class.new(opts) }
 
   describe '#create_doc' do
     it { expect(object.send(:create_doc)).to eq 'description' => '', 'url' => '' }
diff --git a/spec/r2-oas/schema/v3/object/from_routes/info_object_spec.rb b/spec/r2-oas/schema/v3/object/from_routes/info_object_spec.rb
index fcba249a..eba6f1d9 100644
--- a/spec/r2-oas/schema/v3/object/from_routes/info_object_spec.rb
+++ b/spec/r2-oas/schema/v3/object/from_routes/info_object_spec.rb
@@ -4,36 +4,7 @@
 
 RSpec.describe R2OAS::Schema::V3::InfoObject do
   let(:opts) { {} }
-  let(:object) { R2OAS.use_object_classes[:info_object].new(opts) }
-
-  describe '#to_doc' do
-    context 'when use before_create && after_create' do
-      before do
-        class TestInfoObject < R2OAS::Schema::V3::InfoObject
-          before_create do |doc|
-            doc.merge!(
-              'before_key' => 'before_value'
-            )
-          end
-
-          after_create do |doc|
-            doc.merge!(
-              'after_key' => 'after_value'
-            )
-          end
-        end
-
-        R2OAS.configure do |config|
-          config.use_object_classes.merge!(
-            info_object: TestInfoObject
-          )
-        end
-      end
-
-      it { expect(object.to_doc['before_key']).to eq 'before_value' }
-      it { expect(object.to_doc['after_key']).to eq 'after_value' }
-    end
-  end
+  let(:object) { described_class.new(opts) }
 
   describe '#create_doc (private)' do
     it do
diff --git a/spec/r2-oas/schema/v3/object/from_routes/path_item_object_spec.rb b/spec/r2-oas/schema/v3/object/from_routes/path_item_object_spec.rb
index d3f3b2b4..71c15322 100644
--- a/spec/r2-oas/schema/v3/object/from_routes/path_item_object_spec.rb
+++ b/spec/r2-oas/schema/v3/object/from_routes/path_item_object_spec.rb
@@ -7,36 +7,7 @@
     { format_name: '', path: '/api/v1/tasks/{id}', required_parameters: { id: { type: 'integer' } }, schema_name: 'Api_V1_Task', tag_name: 'api/v1/task', verb: 'delete' }
   end
   let(:path) { '/api/v1/tasks/{id}' }
-  let(:object) { R2OAS.use_object_classes[:path_item_object].new(route_data, path) }
-
-  describe '#to_doc' do
-    context 'when use before_create && after_create' do
-      before do
-        class TestPathItemObject < R2OAS::Schema::V3::PathItemObject
-          before_create do |doc, _path|
-            doc.merge!(
-              'before_key' => 'before_value'
-            )
-          end
-
-          after_create do |doc, _path|
-            doc.merge!(
-              'after_key' => 'after_value'
-            )
-          end
-        end
-
-        R2OAS.configure do |config|
-          config.use_object_classes.merge!(
-            path_item_object: TestPathItemObject
-          )
-        end
-      end
-
-      it { expect(object.to_doc['before_key']).to eq 'before_value' }
-      it { expect(object.to_doc['after_key']).to eq 'after_value' }
-    end
-  end
+  let(:object) { described_class.new(route_data, path) }
 
   describe '#create_doc' do
     it do
diff --git a/spec/r2-oas/schema/v3/object/from_routes/paths_object_spec.rb b/spec/r2-oas/schema/v3/object/from_routes/paths_object_spec.rb
index a28f0767..8951eb26 100644
--- a/spec/r2-oas/schema/v3/object/from_routes/paths_object_spec.rb
+++ b/spec/r2-oas/schema/v3/object/from_routes/paths_object_spec.rb
@@ -4,7 +4,7 @@
 
 RSpec.describe R2OAS::Schema::V3::PathsObject do
   let(:routes_data) { [] }
-  let(:object) { R2OAS.use_object_classes[:paths_object].new(routes_data) }
+  let(:object) { described_class.new(routes_data) }
 
   before do
     init
@@ -14,35 +14,6 @@
     delete_oas_docs
   end
 
-  describe '#to_doc' do
-    context 'when use before_create && after_create' do
-      before do
-        class TestPathsObject < R2OAS::Schema::V3::PathsObject
-          before_create do |doc, _path|
-            doc.merge!(
-              'before_key' => 'before_value'
-            )
-          end
-
-          after_create do |doc, _path|
-            doc.merge!(
-              'after_key' => 'after_value'
-            )
-          end
-        end
-
-        R2OAS.configure do |config|
-          config.use_object_classes.merge!(
-            paths_object: TestPathsObject
-          )
-        end
-      end
-
-      it { expect(object.to_doc['before_key']).to eq 'before_value' }
-      it { expect(object.to_doc['after_key']).to eq 'after_value' }
-    end
-  end
-
   describe '#create_doc' do
     context 'when namespace_type is :underbar' do
       let(:routes_data) do
diff --git a/spec/r2-oas/tasks/main_spec.rb b/spec/r2-oas/tasks/main_spec.rb
index 6119cb65..28e20339 100644
--- a/spec/r2-oas/tasks/main_spec.rb
+++ b/spec/r2-oas/tasks/main_spec.rb
@@ -76,7 +76,7 @@
         end
 
         it 'should do not occur error' do
-          expect { subject }.not_to raise_error(R2OAS::NoFileExistsError)
+          expect { subject }.not_to raise_error
         end
         it do
           subject
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index e0827a36..565676db 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -4,6 +4,7 @@
 # workaround  uninitialized constant R2OAS::ActiveSupport
 require 'action_controller/railtie'
 require 'r2-oas'
+require 'r2-oas/schema/v3/object/from_routes/all'
 require 'pry'
 
 # needs to load the app
diff --git a/spec/support/helpers/config_helper.rb b/spec/support/helpers/config_helper.rb
index 7c6808e1..7bda4602 100644
--- a/spec/support/helpers/config_helper.rb
+++ b/spec/support/helpers/config_helper.rb
@@ -29,16 +29,6 @@ def reset_config
         swagger.editor.exposed_port = '8080/tcp'
       end
 
-      config.use_object_classes = {
-        info_object: R2OAS::Schema::V3::InfoObject,
-        paths_object: R2OAS::Schema::V3::PathsObject,
-        path_item_object: R2OAS::Schema::V3::PathItemObject,
-        external_document_object: R2OAS::Schema::V3::ExternalDocumentObject,
-        components_object: R2OAS::Schema::V3::ComponentsObject,
-        components_schema_object: R2OAS::Schema::V3::Components::SchemaObject,
-        components_request_body_object: R2OAS::Schema::V3::Components::RequestBodyObject
-      }
-
       config.http_statuses_when_http_method = {
         get: {
           default: %w[200 422],
diff --git a/spec/support/helpers/hooks_helper.rb b/spec/support/helpers/hooks_helper.rb
index 7374a496..cc8d26bb 100644
--- a/spec/support/helpers/hooks_helper.rb
+++ b/spec/support/helpers/hooks_helper.rb
@@ -4,6 +4,6 @@
 
 module HooksHelper
   def reset_plugin_repo
-    ::R2OAS::Hooks::Hook.repository[:plugin] = {}
+    ::R2OAS::Hooks::Hook.repository[:plugin] = {} if ::R2OAS::Hooks::Hook.repository.is_a? Hash
   end
 end