diff --git a/src/main/java/space/yurisi/universecorev2/command/CommandManager.java b/src/main/java/space/yurisi/universecorev2/command/CommandManager.java
index 78b0d345..08510262 100644
--- a/src/main/java/space/yurisi/universecorev2/command/CommandManager.java
+++ b/src/main/java/space/yurisi/universecorev2/command/CommandManager.java
@@ -12,6 +12,7 @@ public CommandManager(UniverseCoreV2 main){
     }
 
     private void init(){
+        main.getCommand("menu").setExecutor(new menuCommand());
         main.getCommand("password").setExecutor(new passwordCommand());
         main.getCommand("pplayer").setExecutor(new pplayerCommand());
         main.getCommand("lobby").setExecutor(new lobbyCommand());
diff --git a/src/main/java/space/yurisi/universecorev2/command/menuCommand.java b/src/main/java/space/yurisi/universecorev2/command/menuCommand.java
new file mode 100644
index 00000000..a892072b
--- /dev/null
+++ b/src/main/java/space/yurisi/universecorev2/command/menuCommand.java
@@ -0,0 +1,37 @@
+package space.yurisi.universecorev2.command;
+
+import org.bukkit.Sound;
+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.menu.MainMenu;
+import space.yurisi.universecorev2.utils.Message;
+
+import java.util.Random;
+
+public class menuCommand implements CommandExecutor {
+
+    @Override
+    public boolean onCommand(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, String[] args) {
+        if (!(sender instanceof Player player)) {
+            return false;
+        }
+
+        MainMenu mainMenu = new MainMenu();
+        mainMenu.sendMenu(player);
+
+        // 0.122%の確率でクリーパーの効果音を再生
+        if (new Random().nextDouble() < 0.000122) {
+            player.playSound(player.getLocation(), Sound.ENTITY_CREEPER_PRIMED, 10, 1);
+            player.playSound(player.getLocation(), Sound.ENTITY_GENERIC_EXPLODE, 10, 1);
+            Message.sendSuccessMessage(player, "[管理AI]", "§c§oメニューを開きました...ヮ! クリーパーが... (´・ω・`)");
+        } else {
+            player.playSound(player.getLocation(), Sound.BLOCK_AMETHYST_BLOCK_FALL, 10, 1);
+            Message.sendSuccessMessage(player, "[管理AI]", "メニューを開きました");
+        }
+
+        return true;
+    }
+}
diff --git a/src/main/java/space/yurisi/universecorev2/menu/MainMenu.java b/src/main/java/space/yurisi/universecorev2/menu/MainMenu.java
new file mode 100644
index 00000000..444e2069
--- /dev/null
+++ b/src/main/java/space/yurisi/universecorev2/menu/MainMenu.java
@@ -0,0 +1,176 @@
+package space.yurisi.universecorev2.menu;
+
+import org.bukkit.Bukkit;
+import org.bukkit.Material;
+import org.bukkit.Server;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.SkullMeta;
+import space.yurisi.universecorev2.UniverseCoreV2API;
+import space.yurisi.universecorev2.database.DatabaseManager;
+import space.yurisi.universecorev2.database.models.User;
+import space.yurisi.universecorev2.database.repositories.CustomNameRepository;
+import space.yurisi.universecorev2.database.repositories.UserRepository;
+import space.yurisi.universecorev2.exception.CustomNameNotFoundException;
+import space.yurisi.universecorev2.exception.MoneyNotFoundException;
+import space.yurisi.universecorev2.exception.UserNotFoundException;
+import space.yurisi.universecorev2.subplugins.universeeconomy.UniverseEconomyAPI;
+import space.yurisi.universecorev2.utils.Message;
+import space.yurisi.universecorev2.utils.TimeHelper;
+import xyz.xenondevs.invui.gui.Gui;
+import xyz.xenondevs.invui.item.Item;
+import xyz.xenondevs.invui.item.builder.ItemBuilder;
+import xyz.xenondevs.invui.item.impl.CommandItem;
+import xyz.xenondevs.invui.item.impl.SimpleItem;
+import xyz.xenondevs.invui.window.Window;
+
+import java.time.LocalTime;
+import java.util.Arrays;
+import java.util.List;
+
+public class MainMenu implements BaseMenu {
+
+    public void sendMenu(Player player) {
+        Item border = new SimpleItem(new ItemBuilder(Material.BLACK_STAINED_GLASS_PANE));
+        Item inMenuBorder = new SimpleItem(new ItemBuilder(Material.LIGHT_BLUE_STAINED_GLASS_PANE));
+
+        Item executeMywarp = new CommandItem(new ItemBuilder(Material.COMPASS)
+                .setDisplayName("マイワープ")
+                .setLegacyLore(List.of("§6保存した場所にテレポートします")),
+                "/mywarp");
+        Item executeMarket = new CommandItem(new ItemBuilder(Material.EMERALD)
+                .setDisplayName("マーケット")
+                .setLegacyLore(List.of("§6プレイヤー間のアイテム取引ができます")),
+                "/market");
+        Item executeTpp = new CommandItem(new ItemBuilder(Material.ENDER_PEARL)
+                .setDisplayName("プレイヤー間テレポート")
+                .setLegacyLore(List.of("§6他のプレイヤーにテレポートできます")),
+                "/tpp");
+        Item executeGacha = new CommandItem(new ItemBuilder(Material.NETHER_STAR)
+                .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.NETHER_STAR)
+                .setDisplayName("ゴミ箱")
+                .setLegacyLore(List.of("§6ゴミ箱を開きます。取り扱い注意!")),
+                "/trash");
+        Item executeTag = new CommandItem(new ItemBuilder(Material.NAME_TAG)
+                .setDisplayName("称号設定")
+                .setLegacyLore(List.of("§6称号を設定します")),
+                "/tag");
+        Item executeHead = new CommandItem(new ItemBuilder(Material.PLAYER_HEAD)
+                .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");
+
+        Gui gui = Gui.normal()
+                .setStructure(
+                        "= # # # i # # # #",
+                        "# + a m t g y + #",
+                        "# + w u n s h + #",
+                        "# # # # # # # # #"
+                )
+                .addIngredient('#', border)
+                .addIngredient('+', inMenuBorder)
+                .addIngredient('=', createServerInfoItem())
+                .addIngredient('i', createPlayerInfoHead(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)
+                .build();
+
+        xyz.xenondevs.invui.window.Window window = Window.single()
+                .setViewer(player)
+                .setGui(gui)
+                .setTitle("メインメニュー")
+                .build();
+
+        window.open();
+    }
+
+    private Item createPlayerInfoHead(Player player) {
+        ItemStack playerHead = new ItemStack(Material.PLAYER_HEAD, 1);
+        SkullMeta skullMeta = (SkullMeta) playerHead.getItemMeta();
+        skullMeta.setOwningPlayer(player);
+        playerHead.setItemMeta(skullMeta);
+
+        DatabaseManager dbManager = UniverseCoreV2API.getInstance().getDatabaseManager();
+        UniverseEconomyAPI economyAPI = UniverseEconomyAPI.getInstance();
+        UserRepository userRepo = dbManager.getUserRepository();
+        CustomNameRepository customNameRepo = dbManager.getCustomNameRepository();
+
+        Long money = 0L;
+        String customName = "未設定";
+
+        try {
+            User user = userRepo.getUserFromUUID(player.getUniqueId());
+
+            money = economyAPI.getMoney(player);
+            if(customNameRepo.existsCustomNameFromUserId(user.getId())) {
+                customName = customNameRepo.getCustomNameFromUserId(user.getId()).getDisplay_custom_tag();
+            }
+        } catch (UserNotFoundException e) {
+            money = 0L;
+            customName = "§c(取得できませんでした)";
+            Message.sendErrorMessage(player,"[管理AI]", "ユーザーデータが見つかりませんでした。");
+        } catch (MoneyNotFoundException e) {
+            money = 0L;
+            Message.sendErrorMessage(player,"[管理AI]", "所持金データが見つかりませんでした。");
+        } catch (CustomNameNotFoundException e) {
+            customName = "§c(取得できませんでした)";
+            Message.sendErrorMessage(player,"[管理AI]", "称号データが見つかりませんでした。");
+        }
+
+        String greetingWithName = switch (TimeHelper.checkTime()) {
+            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();
+        };
+
+        List<String> playerinfo = List.of(
+                "§a名前: §r" + player.getName(),
+                "§a称号:§r" + customName,
+                "§a所持金: §r" + money + economyAPI.getUnit(),
+                "§a現在地: §r" + player.getWorld().getName(),
+                "§a座標: §r" + player.getLocation().getBlockX() + ", " + player.getLocation().getBlockY() + ", " + player.getLocation().getBlockZ(),
+                "§aPing値: §r" + player.getPing() + "ms"
+        );
+
+        return new SimpleItem(new ItemBuilder(playerHead)
+                .setDisplayName(greetingWithName)
+                .setLegacyLore(playerinfo));
+    }
+
+    private Item createServerInfoItem() {
+        Server server = Bukkit.getServer();
+        List<String> serverinfo = List.of(
+                "§aオンライン人数: §r" + server.getOnlinePlayers().size() + "/" + server.getMaxPlayers(),
+                "§aUniverseCoreV2のバージョン: §r" + server.getPluginManager().getPlugin("UniverseCoreV2").getDescription().getVersion(),
+                "§aTPS値: §r" + String.format("%.1f, %.1f, %.1f", server.getTPS()[0], server.getTPS()[1], server.getTPS()[2]),
+                "§aバージョン: §r" + server.getBukkitVersion() + " - " + server.getVersion()
+        );
+
+        return new SimpleItem(new ItemBuilder(Material.SOUL_LANTERN)
+                .setDisplayName("§bサーバー情報")
+                .setLegacyLore(serverinfo));
+    }
+}
diff --git a/src/main/java/space/yurisi/universecorev2/utils/TimeHelper.java b/src/main/java/space/yurisi/universecorev2/utils/TimeHelper.java
new file mode 100644
index 00000000..b7d561b7
--- /dev/null
+++ b/src/main/java/space/yurisi/universecorev2/utils/TimeHelper.java
@@ -0,0 +1,25 @@
+package space.yurisi.universecorev2.utils;
+
+import space.yurisi.universecorev2.utils.time_type.TimeType;
+import java.time.LocalTime;
+
+public class TimeHelper {
+
+    /**
+     * 現在時刻をチェックし、その時間帯を返します。
+     *
+     * @return TimeType 時間帯 -- MORNING: 朝, AFTERNOON: 昼, EVENING: 夜
+     */
+    public static TimeType checkTime() {
+        LocalTime now = LocalTime.now();
+
+        if (now.isBefore(LocalTime.NOON)) {
+            return TimeType.MORNING;
+        } else if (now.isBefore(LocalTime.of(18, 0))) {
+            return TimeType.AFTERNOON;
+        } else {
+            return TimeType.EVENING;
+        }
+    }
+
+}
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
new file mode 100644
index 00000000..730d0c37
--- /dev/null
+++ b/src/main/java/space/yurisi/universecorev2/utils/time_type/TimeType.java
@@ -0,0 +1,7 @@
+package space.yurisi.universecorev2.utils.time_type;
+
+public enum TimeType {
+    MORNING,
+    AFTERNOON,
+    EVENING
+}
diff --git a/src/main/resources/plugin.yml b/src/main/resources/plugin.yml
index 74de3f83..59dab578 100644
--- a/src/main/resources/plugin.yml
+++ b/src/main/resources/plugin.yml
@@ -3,6 +3,9 @@ version: '1.0'
 main: space.yurisi.universecorev2.UniverseCoreV2
 api-version: '1.21'
 commands:
+  menu:
+    description: メニューを開きます
+    aliases: [ m ]
   password:
     description: パスワードを設定します
   pplayer: