diff --git a/src/main/java/com/back/catchmate/domain/board/converter/BoardConverter.java b/src/main/java/com/back/catchmate/domain/board/converter/BoardConverter.java
index 754c888..b0a9cf3 100644
--- a/src/main/java/com/back/catchmate/domain/board/converter/BoardConverter.java
+++ b/src/main/java/com/back/catchmate/domain/board/converter/BoardConverter.java
@@ -9,11 +9,9 @@
 import com.back.catchmate.domain.game.dto.GameResponse.GameInfo;
 import com.back.catchmate.domain.game.entity.Game;
 import com.back.catchmate.domain.user.converter.UserConverter;
-import com.back.catchmate.domain.user.dto.UserResponse;
 import com.back.catchmate.domain.user.dto.UserResponse.UserInfo;
 import com.back.catchmate.domain.user.entity.User;
 import lombok.RequiredArgsConstructor;
-import org.springframework.cglib.core.Local;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageImpl;
 import org.springframework.stereotype.Component;
diff --git a/src/main/java/com/back/catchmate/domain/board/dto/BoardResponse.java b/src/main/java/com/back/catchmate/domain/board/dto/BoardResponse.java
index 9167455..8c05de0 100644
--- a/src/main/java/com/back/catchmate/domain/board/dto/BoardResponse.java
+++ b/src/main/java/com/back/catchmate/domain/board/dto/BoardResponse.java
@@ -1,7 +1,6 @@
 package com.back.catchmate.domain.board.dto;
 
 import com.back.catchmate.domain.game.dto.GameResponse.GameInfo;
-import com.back.catchmate.domain.user.dto.UserResponse;
 import com.back.catchmate.domain.user.dto.UserResponse.UserInfo;
 import lombok.AllArgsConstructor;
 import lombok.Builder;
diff --git a/src/main/java/com/back/catchmate/domain/board/service/BoardService.java b/src/main/java/com/back/catchmate/domain/board/service/BoardService.java
index 48810ea..86b2b07 100644
--- a/src/main/java/com/back/catchmate/domain/board/service/BoardService.java
+++ b/src/main/java/com/back/catchmate/domain/board/service/BoardService.java
@@ -1,11 +1,9 @@
 package com.back.catchmate.domain.board.service;
 
-import com.back.catchmate.domain.board.dto.BoardRequest;
 import com.back.catchmate.domain.board.dto.BoardResponse.BoardDeleteInfo;
 import com.back.catchmate.domain.board.dto.BoardResponse.BoardInfo;
 import com.back.catchmate.domain.board.dto.BoardResponse.PagedBoardInfo;
 import org.springframework.data.domain.Pageable;
-import org.springframework.transaction.annotation.Transactional;
 
 import java.time.LocalDate;
 
diff --git a/src/main/java/com/back/catchmate/domain/club/converter/ClubConverter.java b/src/main/java/com/back/catchmate/domain/club/converter/ClubConverter.java
index 121e989..98207c6 100644
--- a/src/main/java/com/back/catchmate/domain/club/converter/ClubConverter.java
+++ b/src/main/java/com/back/catchmate/domain/club/converter/ClubConverter.java
@@ -1,13 +1,11 @@
 package com.back.catchmate.domain.club.converter;
 
-import com.back.catchmate.domain.club.dto.ClubResponse;
 import com.back.catchmate.domain.club.dto.ClubResponse.ClubInfo;
 import com.back.catchmate.domain.club.dto.ClubResponse.ClubInfoList;
 import com.back.catchmate.domain.club.entity.Club;
 import org.springframework.stereotype.Component;
 
 import java.util.List;
-import java.util.stream.Collectors;
 
 @Component
 public class ClubConverter {
diff --git a/src/main/java/com/back/catchmate/domain/club/service/ClubServiceImpl.java b/src/main/java/com/back/catchmate/domain/club/service/ClubServiceImpl.java
index aa0b863..0555db8 100644
--- a/src/main/java/com/back/catchmate/domain/club/service/ClubServiceImpl.java
+++ b/src/main/java/com/back/catchmate/domain/club/service/ClubServiceImpl.java
@@ -2,6 +2,7 @@
 
 import com.back.catchmate.domain.club.converter.ClubConverter;
 import com.back.catchmate.domain.club.dto.ClubResponse;
+import com.back.catchmate.domain.club.dto.ClubResponse.ClubInfoList;
 import com.back.catchmate.domain.club.entity.Club;
 import com.back.catchmate.domain.club.repository.ClubRepository;
 import lombok.RequiredArgsConstructor;
@@ -18,7 +19,7 @@ public class ClubServiceImpl implements ClubService {
 
     @Override
     @Transactional(readOnly = true)
-    public ClubResponse.ClubInfoList getClubInfoList() {
+    public ClubInfoList getClubInfoList() {
         List<Club> clubList = clubRepository.findAll();
         return clubConverter.toClubInfoList(clubList);
     }
diff --git a/src/main/java/com/back/catchmate/domain/game/entity/Game.java b/src/main/java/com/back/catchmate/domain/game/entity/Game.java
index a59b818..4edb2ef 100644
--- a/src/main/java/com/back/catchmate/domain/game/entity/Game.java
+++ b/src/main/java/com/back/catchmate/domain/game/entity/Game.java
@@ -3,8 +3,22 @@
 import com.back.catchmate.domain.board.entity.Board;
 import com.back.catchmate.domain.club.entity.Club;
 import com.back.catchmate.global.entity.BaseTimeEntity;
-import jakarta.persistence.*;
-import lombok.*;
+import jakarta.persistence.Column;
+import jakarta.persistence.Id;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.Table;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+import lombok.ToString;
 
 import java.time.LocalDateTime;
 import java.util.ArrayList;
diff --git a/src/main/java/com/back/catchmate/domain/game/repository/GameRepository.java b/src/main/java/com/back/catchmate/domain/game/repository/GameRepository.java
index 8f352ea..ad5dc74 100644
--- a/src/main/java/com/back/catchmate/domain/game/repository/GameRepository.java
+++ b/src/main/java/com/back/catchmate/domain/game/repository/GameRepository.java
@@ -1,6 +1,5 @@
 package com.back.catchmate.domain.game.repository;
 
-import com.back.catchmate.domain.board.entity.Board;
 import com.back.catchmate.domain.club.entity.Club;
 import com.back.catchmate.domain.game.entity.Game;
 import org.springframework.data.jpa.repository.JpaRepository;
@@ -9,5 +8,4 @@
 
 public interface GameRepository extends JpaRepository<Game, Long> {
     Game findByHomeClubAndAwayClubAndGameStartDate(Club homeClub, Club awayClub, LocalDateTime gameStartDate);
-
 }
diff --git a/src/main/java/com/back/catchmate/domain/notification/dto/NotificationResponse.java b/src/main/java/com/back/catchmate/domain/notification/dto/NotificationResponse.java
index b6dc48a..2d9622c 100644
--- a/src/main/java/com/back/catchmate/domain/notification/dto/NotificationResponse.java
+++ b/src/main/java/com/back/catchmate/domain/notification/dto/NotificationResponse.java
@@ -24,15 +24,6 @@ public static class NotificationInfo {
         private boolean isRead;
     }
 
-    @Getter
-    @Builder
-    @NoArgsConstructor
-    @AllArgsConstructor
-    public static class CreateNotificationInfo {
-        private Long notificationId;
-        private LocalDateTime createdAt;
-    }
-
     @Getter
     @Builder
     @AllArgsConstructor
diff --git a/src/main/java/com/back/catchmate/domain/user/controller/UserController.java b/src/main/java/com/back/catchmate/domain/user/controller/UserController.java
index 6869e9d..fe3d955 100644
--- a/src/main/java/com/back/catchmate/domain/user/controller/UserController.java
+++ b/src/main/java/com/back/catchmate/domain/user/controller/UserController.java
@@ -1,6 +1,9 @@
 package com.back.catchmate.domain.user.controller;
 
 import com.back.catchmate.domain.user.dto.UserRequest;
+import com.back.catchmate.domain.user.dto.UserResponse.LoginInfo;
+import com.back.catchmate.domain.user.dto.UserResponse.UpdateAlarmInfo;
+import com.back.catchmate.domain.user.dto.UserResponse.UserInfo;
 import com.back.catchmate.domain.user.entity.AlarmType;
 import com.back.catchmate.domain.user.service.UserService;
 import com.back.catchmate.global.dto.StateResponse;
@@ -22,8 +25,6 @@
 
 import java.io.IOException;
 
-import static com.back.catchmate.domain.user.dto.UserResponse.*;
-
 @Tag(name = "사용자 관련 API")
 @RestController
 @RequestMapping("/user")
@@ -61,8 +62,8 @@ public StateResponse updateProfile(@RequestPart("request") @Valid UserRequest.Us
     @Operation(summary = "알림 설정", description = "유저의 알람 수신 여부를 변경하는 API 입니다.")
     @PatchMapping("/alarm")
     public UpdateAlarmInfo updateAlarm(@JwtValidation Long userId,
-                                       @RequestParam("alarmType") AlarmType alarmType,
-                                       @RequestParam("isEnabled") char isEnabled) {
+                                                    @RequestParam("alarmType") AlarmType alarmType,
+                                                    @RequestParam("isEnabled") char isEnabled) {
         return userService.updateAlarm(userId, alarmType, isEnabled);
     }
 }
diff --git a/src/main/java/com/back/catchmate/domain/user/service/UserServiceImpl.java b/src/main/java/com/back/catchmate/domain/user/service/UserServiceImpl.java
index 21c41ac..e7c9d2a 100644
--- a/src/main/java/com/back/catchmate/domain/user/service/UserServiceImpl.java
+++ b/src/main/java/com/back/catchmate/domain/user/service/UserServiceImpl.java
@@ -25,7 +25,6 @@
 import org.springframework.web.multipart.MultipartFile;
 
 import java.io.IOException;
-import java.util.UUID;
 
 import static com.back.catchmate.global.auth.service.AuthServiceImpl.PROVIDER_ID_SEPARATOR;
 
diff --git a/src/main/java/com/back/catchmate/global/auth/controller/AuthController.java b/src/main/java/com/back/catchmate/global/auth/controller/AuthController.java
index 57ff3bf..8c172cf 100644
--- a/src/main/java/com/back/catchmate/global/auth/controller/AuthController.java
+++ b/src/main/java/com/back/catchmate/global/auth/controller/AuthController.java
@@ -1,9 +1,9 @@
 package com.back.catchmate.global.auth.controller;
 
-import com.back.catchmate.global.auth.dto.request.AuthRequest;
-import com.back.catchmate.global.auth.dto.response.AuthResponse.LoginInfo;
-import com.back.catchmate.global.auth.dto.response.AuthResponse.NicknameCheckInfo;
-import com.back.catchmate.global.auth.dto.response.AuthResponse.ReissueInfo;
+import com.back.catchmate.global.auth.dto.AuthRequest.LoginRequest;
+import com.back.catchmate.global.auth.dto.AuthResponse.AuthInfo;
+import com.back.catchmate.global.auth.dto.AuthResponse.NicknameCheckInfo;
+import com.back.catchmate.global.auth.dto.AuthResponse.ReissueInfo;
 import com.back.catchmate.global.auth.service.AuthServiceImpl;
 import com.back.catchmate.global.dto.StateResponse;
 import io.swagger.v3.oas.annotations.Operation;
@@ -28,7 +28,7 @@ public class AuthController {
 
     @PostMapping("/login")
     @Operation(summary = "로그인 & 회원가입 API", description = "회원가입/로그인을 통해 토큰을 발급하는 API 입니다.")
-    public LoginInfo login(@Valid @RequestBody AuthRequest.LoginRequest loginRequest) {
+    public AuthInfo login(@Valid @RequestBody LoginRequest loginRequest) {
         return authService.login(loginRequest);
     }
 
diff --git a/src/main/java/com/back/catchmate/global/auth/converter/AuthConverter.java b/src/main/java/com/back/catchmate/global/auth/converter/AuthConverter.java
index 5093ac7..73ac5c2 100644
--- a/src/main/java/com/back/catchmate/global/auth/converter/AuthConverter.java
+++ b/src/main/java/com/back/catchmate/global/auth/converter/AuthConverter.java
@@ -1,13 +1,13 @@
 package com.back.catchmate.global.auth.converter;
 
-import com.back.catchmate.global.auth.dto.response.AuthResponse.LoginInfo;
+import com.back.catchmate.global.auth.dto.AuthResponse.AuthInfo;
 import org.springframework.stereotype.Component;
 
 @Component
 public class AuthConverter {
 
-    public LoginInfo toLoginInfo(String accessToken, String refreshToken, Boolean isFirstLogin) {
-        return LoginInfo.builder()
+    public AuthInfo toLoginInfo(String accessToken, String refreshToken, Boolean isFirstLogin) {
+        return AuthInfo.builder()
                 .accessToken(accessToken)
                 .refreshToken(refreshToken)
                 .isFirstLogin(isFirstLogin)
diff --git a/src/main/java/com/back/catchmate/global/auth/dto/request/AuthRequest.java b/src/main/java/com/back/catchmate/global/auth/dto/AuthRequest.java
similarity index 94%
rename from src/main/java/com/back/catchmate/global/auth/dto/request/AuthRequest.java
rename to src/main/java/com/back/catchmate/global/auth/dto/AuthRequest.java
index decb99b..85e7615 100644
--- a/src/main/java/com/back/catchmate/global/auth/dto/request/AuthRequest.java
+++ b/src/main/java/com/back/catchmate/global/auth/dto/AuthRequest.java
@@ -1,4 +1,4 @@
-package com.back.catchmate.global.auth.dto.request;
+package com.back.catchmate.global.auth.dto;
 
 import jakarta.validation.constraints.Email;
 import jakarta.validation.constraints.NotNull;
diff --git a/src/main/java/com/back/catchmate/global/auth/dto/response/AuthResponse.java b/src/main/java/com/back/catchmate/global/auth/dto/AuthResponse.java
similarity index 87%
rename from src/main/java/com/back/catchmate/global/auth/dto/response/AuthResponse.java
rename to src/main/java/com/back/catchmate/global/auth/dto/AuthResponse.java
index 5dd83b7..ccbffc1 100644
--- a/src/main/java/com/back/catchmate/global/auth/dto/response/AuthResponse.java
+++ b/src/main/java/com/back/catchmate/global/auth/dto/AuthResponse.java
@@ -1,4 +1,4 @@
-package com.back.catchmate.global.auth.dto.response;
+package com.back.catchmate.global.auth.dto;
 
 import lombok.AllArgsConstructor;
 import lombok.Builder;
@@ -10,7 +10,7 @@ public abstract class AuthResponse {
     @Builder
     @NoArgsConstructor
     @AllArgsConstructor
-    public static class LoginInfo {
+    public static class AuthInfo {
         private String accessToken;
         private String refreshToken;
         private Boolean isFirstLogin;
diff --git a/src/main/java/com/back/catchmate/global/auth/service/AuthService.java b/src/main/java/com/back/catchmate/global/auth/service/AuthService.java
index c0f15e7..ec3efab 100644
--- a/src/main/java/com/back/catchmate/global/auth/service/AuthService.java
+++ b/src/main/java/com/back/catchmate/global/auth/service/AuthService.java
@@ -1,13 +1,13 @@
 package com.back.catchmate.global.auth.service;
 
-import com.back.catchmate.global.auth.dto.request.AuthRequest;
-import com.back.catchmate.global.auth.dto.response.AuthResponse.LoginInfo;
-import com.back.catchmate.global.auth.dto.response.AuthResponse.NicknameCheckInfo;
-import com.back.catchmate.global.auth.dto.response.AuthResponse.ReissueInfo;
+import com.back.catchmate.global.auth.dto.AuthRequest;
+import com.back.catchmate.global.auth.dto.AuthResponse.AuthInfo;
+import com.back.catchmate.global.auth.dto.AuthResponse.NicknameCheckInfo;
+import com.back.catchmate.global.auth.dto.AuthResponse.ReissueInfo;
 import com.back.catchmate.global.dto.StateResponse;
 
 public interface AuthService {
-    LoginInfo login(AuthRequest.LoginRequest loginRequest);
+    AuthInfo login(AuthRequest.LoginRequest loginRequest);
 
     NicknameCheckInfo checkNickname(String nickName);
 
diff --git a/src/main/java/com/back/catchmate/global/auth/service/AuthServiceImpl.java b/src/main/java/com/back/catchmate/global/auth/service/AuthServiceImpl.java
index 84acf89..ca17fdb 100644
--- a/src/main/java/com/back/catchmate/global/auth/service/AuthServiceImpl.java
+++ b/src/main/java/com/back/catchmate/global/auth/service/AuthServiceImpl.java
@@ -3,10 +3,10 @@
 import com.back.catchmate.domain.user.entity.User;
 import com.back.catchmate.domain.user.repository.UserRepository;
 import com.back.catchmate.global.auth.converter.AuthConverter;
-import com.back.catchmate.global.auth.dto.request.AuthRequest;
-import com.back.catchmate.global.auth.dto.response.AuthResponse.LoginInfo;
-import com.back.catchmate.global.auth.dto.response.AuthResponse.NicknameCheckInfo;
-import com.back.catchmate.global.auth.dto.response.AuthResponse.ReissueInfo;
+import com.back.catchmate.global.auth.dto.AuthRequest;
+import com.back.catchmate.global.auth.dto.AuthResponse.AuthInfo;
+import com.back.catchmate.global.auth.dto.AuthResponse.NicknameCheckInfo;
+import com.back.catchmate.global.auth.dto.AuthResponse.ReissueInfo;
 import com.back.catchmate.global.auth.entity.RefreshToken;
 import com.back.catchmate.global.auth.repository.RefreshTokenRepository;
 import com.back.catchmate.global.dto.StateResponse;
@@ -21,7 +21,6 @@
 
 @Service
 @RequiredArgsConstructor
-@Transactional(readOnly = true)
 public class AuthServiceImpl implements AuthService {
     private final JwtService jwtService;
     private final UserRepository userRepository;
@@ -34,19 +33,19 @@ public class AuthServiceImpl implements AuthService {
     // 로그인 메서드
     @Override
     @Transactional
-    public LoginInfo login(AuthRequest.LoginRequest loginRequest) {
+    public AuthInfo login(AuthRequest.LoginRequest loginRequest) {
         // Provider ID와 Provider를 결합한 문자열 생성
         String providerIdWithProvider = loginRequest.getProviderId() + PROVIDER_ID_SEPARATOR + loginRequest.getProvider();
 
         // 결합한 문자열로 사용자 조회
         Optional<User> findUserOptional = userRepository.findByProviderId(providerIdWithProvider);
         boolean isFirstLogin = false;
-        LoginInfo loginInfo;
+        AuthInfo authInfo;
 
         if (findUserOptional.isEmpty()) {
             // 사용자가 없으면 최초 회원가입 여부를 true 반환
             isFirstLogin = true;
-            loginInfo = authConverter.toLoginInfo(null, null, isFirstLogin);
+            authInfo = authConverter.toLoginInfo(null, null, isFirstLogin);
         } else {
             // 회원가입된 사용자가 있으면 AccessToken과 RefreshToken 반환
             User user = findUserOptional.get();
@@ -61,10 +60,10 @@ public LoginInfo login(AuthRequest.LoginRequest loginRequest) {
 
             // RefreshToken을 Redis에 저장
             refreshTokenRepository.save(RefreshToken.of(refreshToken, userId));
-            loginInfo = authConverter.toLoginInfo(accessToken, refreshToken, isFirstLogin);
+            authInfo = authConverter.toLoginInfo(accessToken, refreshToken, isFirstLogin);
         }
 
-        return loginInfo;
+        return authInfo;
     }
 
     private void checkFcmToken(AuthRequest.LoginRequest loginRequest, User user) {
@@ -74,6 +73,7 @@ private void checkFcmToken(AuthRequest.LoginRequest loginRequest, User user) {
     }
 
     // 닉네임 중복여부를 확인하는 메서드
+    @Override
     @Transactional(readOnly = true)
     public NicknameCheckInfo checkNickname(String nickName) {
         boolean isAvailable = !userRepository.existsByNickName(nickName);
@@ -81,6 +81,7 @@ public NicknameCheckInfo checkNickname(String nickName) {
     }
 
     // 토큰 재발급 메서드
+    @Override
     @Transactional
     public ReissueInfo reissue(String refreshToken) {
         // RefreshToken을 파싱하여 사용자 ID를 가져옴
@@ -95,6 +96,7 @@ public ReissueInfo reissue(String refreshToken) {
     }
 
     // 로그아웃 메서드
+    @Override
     @Transactional
     public StateResponse logout(String refreshToken) {
         // RefreshToken을 파싱하여 사용자 ID를 가져옴