diff --git a/src/main/java/space/yurisi/universecorev2/menu/MainMenu.java b/src/main/java/space/yurisi/universecorev2/menu/MainMenu.java
index eb2ce9d6..4f7e52da 100644
--- a/src/main/java/space/yurisi/universecorev2/menu/MainMenu.java
+++ b/src/main/java/space/yurisi/universecorev2/menu/MainMenu.java
@@ -14,6 +14,7 @@
 import space.yurisi.universecorev2.exception.CustomNameNotFoundException;
 import space.yurisi.universecorev2.exception.MoneyNotFoundException;
 import space.yurisi.universecorev2.exception.UserNotFoundException;
+import space.yurisi.universecorev2.menu.menu_item.main_menu.LaunchNavigationItem;
 import space.yurisi.universecorev2.subplugins.universeeconomy.UniverseEconomyAPI;
 import space.yurisi.universecorev2.utils.Message;
 import space.yurisi.universecorev2.utils.TimeHelper;
@@ -50,18 +51,6 @@ public void sendMenu(Player player) {
                 .setDisplayName("ガチャ")
                 .setLegacyLore(List.of("§6ガチャを引くことができます")),
                 "/gacha");
-        Item executeWiki = new CommandItem(new ItemBuilder(Material.MAP)
-                .setDisplayName("Wiki")
-                .setLegacyLore(List.of("§6公式WikiへのURLを表示します")),
-                "/wiki");
-        Item executeWeb = new CommandItem(new ItemBuilder(Material.RECOVERY_COMPASS)
-                .setDisplayName("UniverseWeb")
-                .setLegacyLore(List.of("§6ランキングなどのオンラインサービスである UniverseWeb へのURLを表示します")),
-                "/web");
-        // TODO: Add execute /money command
-        Item executeMoney = new SimpleItem(new ItemBuilder(Material.GOLD_INGOT)
-                .setDisplayName("銀行 (未実装)")
-                .setLegacyLore(List.of("§6お金を管理します")));
         Item executeTrash = new CommandItem(new ItemBuilder(Material.LAVA_BUCKET)
                 .setDisplayName("ゴミ箱")
                 .setLegacyLore(List.of("§6ゴミ箱を開きます。取り扱い注意!")),
@@ -74,13 +63,17 @@ public void sendMenu(Player player) {
                 .setDisplayName("プレイヤーヘッド")
                 .setLegacyLore(List.of("§6他のプレイヤーのヘッドを購入します")),
                 "/head");
+        Item executeAmmo = new CommandItem(new ItemBuilder(Material.IRON_NUGGET)
+                .setDisplayName("弾薬")
+                .setLegacyLore(List.of("§6弾薬を購入・クラフトします")),
+                "/ammo");
 
         Gui gui = Gui.normal()
                 .setStructure(
-                        "= # # # i # # # #",
-                        "# + a m t g y + #",
-                        "# + w u n s h + #",
-                        "# # # # # # # # #"
+                        "# # # i # = # # #",
+                        "# + a m t o y + #",
+                        "# + + n s h + + #",
+                        "# # # # l # # # #"
                 )
                 .addIngredient('#', border)
                 .addIngredient('+', inMenuBorder)
@@ -89,16 +82,15 @@ public void sendMenu(Player player) {
                 .addIngredient('a', executeGacha)
                 .addIngredient('m', executeMywarp)
                 .addIngredient('t', executeTpp)
-                .addIngredient('g', executeMoney)
                 .addIngredient('y', executeMarket)
-                .addIngredient('w', executeWiki)
-                .addIngredient('u', executeWeb)
                 .addIngredient('n', executeTag)
                 .addIngredient('s', executeTrash)
                 .addIngredient('h', executeHead)
+                .addIngredient('o', executeAmmo)
+                .addIngredient('l', new LaunchNavigationItem())
                 .build();
 
-        xyz.xenondevs.invui.window.Window window = Window.single()
+        Window window = Window.single()
                 .setViewer(player)
                 .setGui(gui)
                 .setTitle("メインメニュー")
@@ -141,9 +133,12 @@ private Item createPlayerInfoHead(Player player) {
         }
 
         String greetingWithName = switch (TimeHelper.checkTime()) {
+            case LATE_NIGHT -> "§e遅くまでお疲れ様です、 §r" + player.getName();
+            case EARLY_MORNING -> "§f朝早くからお疲れ様です、 §r" + player.getName();
             case MORNING -> "§bおはようございます、 §r" + player.getName();
-            case AFTERNOON -> "§6こんにちは、 §r" + player.getName();
-            case EVENING -> "§9こんばんは、 §r" + player.getName();
+            case AFTERNOON -> "§aこんにちは、 §r" + player.getName();
+            case EVENING -> "§6夜ご飯は何を食べるんですか？ §r" + player.getName();
+            case NIGHT -> "§9こんばんは、 §r" + player.getName();
         };
 
         List<String> playerinfo = List.of(
diff --git a/src/main/java/space/yurisi/universecorev2/menu/menu_item/main_menu/LaunchNavigationItem.java b/src/main/java/space/yurisi/universecorev2/menu/menu_item/main_menu/LaunchNavigationItem.java
new file mode 100644
index 00000000..14ebd7a7
--- /dev/null
+++ b/src/main/java/space/yurisi/universecorev2/menu/menu_item/main_menu/LaunchNavigationItem.java
@@ -0,0 +1,33 @@
+package space.yurisi.universecorev2.menu.menu_item.main_menu;
+
+import org.bukkit.Bukkit;
+import org.bukkit.Material;
+import org.bukkit.entity.Player;
+import org.bukkit.event.inventory.ClickType;
+import org.bukkit.event.inventory.InventoryClickEvent;
+import org.jetbrains.annotations.NotNull;
+import space.yurisi.universecorev2.menu.MainMenu;
+import xyz.xenondevs.invui.item.ItemProvider;
+import xyz.xenondevs.invui.item.builder.ItemBuilder;
+import xyz.xenondevs.invui.item.impl.AbstractItem;
+
+import java.util.List;
+
+public class LaunchNavigationItem extends AbstractItem {
+
+    @Override
+    public ItemProvider getItemProvider() {
+        return new ItemBuilder(Material.MAP)
+                .setDisplayName("関連リンク")
+                .setLegacyLore(List.of("§6関連リンクを表示します"));
+    }
+
+    @Override
+    public void handleClick(@NotNull ClickType clickType, @NotNull Player player, @NotNull InventoryClickEvent inventoryClickEvent) {
+        Bukkit.getServer().dispatchCommand(player, "web");
+        Bukkit.getServer().dispatchCommand(player, "wiki");
+        Bukkit.getServer().dispatchCommand(player, "discord");
+        // メニューを閉じる
+        player.closeInventory();
+    }
+}
diff --git a/src/main/java/space/yurisi/universecorev2/subplugins/universeguns/UniverseGuns.java b/src/main/java/space/yurisi/universecorev2/subplugins/universeguns/UniverseGuns.java
index eae74866..df9bdaa1 100644
--- a/src/main/java/space/yurisi/universecorev2/subplugins/universeguns/UniverseGuns.java
+++ b/src/main/java/space/yurisi/universecorev2/subplugins/universeguns/UniverseGuns.java
@@ -4,6 +4,7 @@
 import space.yurisi.universecorev2.UniverseCoreV2API;
 import space.yurisi.universecorev2.database.DatabaseManager;
 import space.yurisi.universecorev2.subplugins.SubPlugin;
+import space.yurisi.universecorev2.subplugins.universeguns.core.GunCommand;
 import space.yurisi.universecorev2.subplugins.universeguns.event.GunEvent;
 import space.yurisi.universecorev2.subplugins.universeguns.connector.UniverseCoreAPIConnector;
 
@@ -16,6 +17,7 @@ public void onEnable(UniverseCoreV2 core) {
         DatabaseManager manager = UniverseCoreV2API.getInstance().getDatabaseManager();
         this.connector = new UniverseCoreAPIConnector(manager);
         core.getServer().getPluginManager().registerEvents(new GunEvent(core, connector), core);
+        core.getCommand("ammo").setExecutor(new GunCommand(connector));
     }
 
     public void onDisable() {
@@ -31,4 +33,4 @@ public String getName() {
     public String getVersion() {
         return "1.0.1";
     }
-}
\ No newline at end of file
+}
diff --git a/src/main/java/space/yurisi/universecorev2/subplugins/universeguns/core/GunCommand.java b/src/main/java/space/yurisi/universecorev2/subplugins/universeguns/core/GunCommand.java
new file mode 100644
index 00000000..4f23c5fd
--- /dev/null
+++ b/src/main/java/space/yurisi/universecorev2/subplugins/universeguns/core/GunCommand.java
@@ -0,0 +1,32 @@
+package space.yurisi.universecorev2.subplugins.universeguns.core;
+
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+import space.yurisi.universecorev2.subplugins.universeguns.connector.UniverseCoreAPIConnector;
+import space.yurisi.universecorev2.subplugins.universeguns.menu.AmmoManagerInventoryMenu;
+import space.yurisi.universecorev2.utils.Message;
+
+public class GunCommand implements CommandExecutor {
+
+    private final UniverseCoreAPIConnector connector;
+
+    public GunCommand(UniverseCoreAPIConnector connector) {
+        this.connector = connector;
+    }
+
+    @Override
+    public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String s, @NotNull String[] strings) {
+        if (!(sender instanceof Player player)) {
+            return false;
+        }
+
+        AmmoManagerInventoryMenu ammoManagerInventoryMenu = new AmmoManagerInventoryMenu(connector);
+        ammoManagerInventoryMenu.sendMenu(player);
+
+        Message.sendSuccessMessage(player, "[武器AI]", "弾薬管理メニューを開きました");
+        return true;
+    }
+}
diff --git a/src/main/java/space/yurisi/universecorev2/utils/TimeHelper.java b/src/main/java/space/yurisi/universecorev2/utils/TimeHelper.java
index b7d561b7..4a647cf4 100644
--- a/src/main/java/space/yurisi/universecorev2/utils/TimeHelper.java
+++ b/src/main/java/space/yurisi/universecorev2/utils/TimeHelper.java
@@ -6,19 +6,25 @@
 public class TimeHelper {
 
     /**
-     * 現在時刻をチェックし、その時間帯を返します。
+     * 現在時間をチェックし、その時間帯を表すTimeType列挙型を返します。
      *
-     * @return TimeType 時間帯 -- MORNING: 朝, AFTERNOON: 昼, EVENING: 夜
+     * @return TimeType 時間帯
      */
     public static TimeType checkTime() {
         LocalTime now = LocalTime.now();
 
-        if (now.isBefore(LocalTime.NOON)) {
+        if (now.isBefore(LocalTime.of(5, 0))) {
+            return TimeType.LATE_NIGHT;
+        } else if (now.isBefore(LocalTime.of(8, 0))) {
+            return TimeType.EARLY_MORNING;
+        } else if (now.isBefore(LocalTime.of(10, 0))) {
             return TimeType.MORNING;
-        } else if (now.isBefore(LocalTime.of(18, 0))) {
+        } else if (now.isBefore(LocalTime.of(16, 0))) {
             return TimeType.AFTERNOON;
-        } else {
+        } else if (now.isBefore(LocalTime.of(20, 0))) {
             return TimeType.EVENING;
+        } else {
+            return TimeType.NIGHT;
         }
     }
 
diff --git a/src/main/java/space/yurisi/universecorev2/utils/time_type/TimeType.java b/src/main/java/space/yurisi/universecorev2/utils/time_type/TimeType.java
index 730d0c37..bbcdea7c 100644
--- a/src/main/java/space/yurisi/universecorev2/utils/time_type/TimeType.java
+++ b/src/main/java/space/yurisi/universecorev2/utils/time_type/TimeType.java
@@ -1,7 +1,10 @@
 package space.yurisi.universecorev2.utils.time_type;
 
 public enum TimeType {
+    LATE_NIGHT,
+    EARLY_MORNING,
     MORNING,
     AFTERNOON,
-    EVENING
+    EVENING,
+    NIGHT
 }
diff --git a/src/main/resources/plugin.yml b/src/main/resources/plugin.yml
index 44698b6e..fdb6a45c 100644
--- a/src/main/resources/plugin.yml
+++ b/src/main/resources/plugin.yml
@@ -96,6 +96,10 @@ commands:
   unlock:
     description: コンテナ等の保護を解除します
 
+  ## UniverseGuns
+  ammo:
+    description: 弾薬管理メニューを開く
+
   ## PlayerHead
   head:
     description: プレイヤーヘッドを購入します(WIP)