diff --git a/apps/client/src/scenes/game/GameManager.ts b/apps/client/src/scenes/game/GameManager.ts
index eb1f5a5..87ff08e 100644
--- a/apps/client/src/scenes/game/GameManager.ts
+++ b/apps/client/src/scenes/game/GameManager.ts
@@ -6,12 +6,12 @@
 import { Application, Container, Ticker } from "pixi.js";
 import { socketManager } from "@client/network/SocketManager";
 import { GameMapController } from "./entities/map/GameMapController";
+import { BombManager } from "./entities/bomb/BombManager";
+import { createBombIdFromPayload } from "./entities/bomb/BombManager";
+import type { BombUpsertPayload } from "./entities/bomb/BombManager";
 import { GameTimer } from "./application/GameTimer";
 import { GameNetworkSync } from "./application/GameNetworkSync";
 import { GameLoop } from "./application/GameLoop";
-import { BombManager } from "./application/BombManager";
-import { createBombIdFromPayload } from "./application/BombManager";
-import type { BombUpsertPayload } from "./application/BombManager";
 import type { GamePlayers } from "./application/game.types";
 
 /** ゲームシーンの実行ライフサイクルを管理するマネージャー */
diff --git a/apps/client/src/scenes/game/application/BombManager.ts b/apps/client/src/scenes/game/application/BombManager.ts
deleted file mode 100644
index b9caeb8..0000000
--- a/apps/client/src/scenes/game/application/BombManager.ts
+++ /dev/null
@@ -1,129 +0,0 @@
-/**
- * BombManager
- * 爆弾エンティティの生成，更新，破棄を管理する
- * クールダウンと設置位置解決をまとめて扱う
- */
-import type { Container } from "pixi.js";
-import { config } from "@client/config";
-import type { BombPlacedPayload } from "@repo/shared";
-import { LocalPlayerController } from "@client/scenes/game/entities/player/PlayerController";
-import { BombController } from "@client/scenes/game/entities/bomb/BombController";
-import type { GamePlayers } from "./game.types";
-
-/** 経過時間ミリ秒を返す関数型 */
-export type ElapsedMsProvider = () => number;
-
-/** 爆弾の追加更新に使う入力データ型 */
-export type BombUpsertPayload = BombPlacedPayload & {
-  radiusGrid?: number;
-};
-
-/** 爆弾設置時に返す結果型 */
-export type BombPlacementResult = {
-  bombId: string;
-  payload: BombPlacedPayload;
-};
-
-/** 爆弾ペイロードから一意キーを生成する */
-export const createBombIdFromPayload = (payload: BombPlacedPayload): string => {
-  return `${payload.x}:${payload.y}:${payload.explodeAtElapsedMs}`;
-};
-
-type BombManagerOptions = {
-  worldContainer: Container;
-  players: GamePlayers;
-  myId: string;
-  getElapsedMs: ElapsedMsProvider;
-};
-
-/** 爆弾エンティティのライフサイクルを管理する */
-export class BombManager {
-  private worldContainer: Container;
-  private players: GamePlayers;
-  private myId: string;
-  private getElapsedMs: ElapsedMsProvider;
-  private bombs = new Map<string, BombController>();
-  private lastBombPlacedElapsedMs = Number.NEGATIVE_INFINITY;
-
-  constructor({ worldContainer, players, myId, getElapsedMs }: BombManagerOptions) {
-    this.worldContainer = worldContainer;
-    this.players = players;
-    this.myId = myId;
-    this.getElapsedMs = getElapsedMs;
-  }
-
-  /** 自プレイヤー位置に爆弾を設置し，生成IDを返す */
-  public placeBomb(): BombPlacementResult | null {
-    const me = this.players[this.myId];
-    if (!me || !(me instanceof LocalPlayerController)) return null;
-
-    const elapsedMs = this.getElapsedMs();
-    const { BOMB_COOLDOWN_MS, BOMB_FUSE_MS } = config.GAME_CONFIG;
-    if (elapsedMs - this.lastBombPlacedElapsedMs < BOMB_COOLDOWN_MS) {
-      return null;
-    }
-
-    const position = me.getPosition();
-    const payload: BombPlacedPayload = {
-      x: position.x,
-      y: position.y,
-      explodeAtElapsedMs: elapsedMs + BOMB_FUSE_MS,
-    };
-    const bombId = createBombIdFromPayload(payload);
-
-    this.upsertBomb(bombId, payload);
-    this.lastBombPlacedElapsedMs = elapsedMs;
-    return {
-      bombId,
-      payload,
-    };
-  }
-
-  /** 指定IDの爆弾を追加または更新する */
-  public upsertBomb(bombId: string, payload: BombUpsertPayload): void {
-    const current = this.bombs.get(bombId);
-    if (current) {
-      this.worldContainer.removeChild(current.getDisplayObject());
-      current.destroy();
-    }
-
-    const resolvedPayload = {
-      ...payload,
-      radiusGrid: payload.radiusGrid ?? config.GAME_CONFIG.BOMB_RADIUS_GRID,
-    };
-
-    const bomb = new BombController(resolvedPayload);
-    this.bombs.set(bombId, bomb);
-    this.worldContainer.addChild(bomb.getDisplayObject());
-  }
-
-  /** 指定IDの爆弾を削除する */
-  public removeBomb(bombId: string): void {
-    const bomb = this.bombs.get(bombId);
-    if (!bomb) return;
-
-    this.worldContainer.removeChild(bomb.getDisplayObject());
-    bomb.destroy();
-    this.bombs.delete(bombId);
-  }
-
-  /** 爆弾状態を更新し終了済みを破棄する */
-  public tick(): void {
-    const elapsedMs = this.getElapsedMs();
-
-    this.bombs.forEach((bomb, bombId) => {
-      bomb.tick(elapsedMs);
-
-      if (bomb.isFinished()) {
-        this.removeBomb(bombId);
-        return;
-      }
-    });
-  }
-
-  /** 管理中の爆弾をすべて破棄する */
-  public destroy(): void {
-    this.bombs.forEach((bomb) => bomb.destroy());
-    this.bombs.clear();
-  }
-}
diff --git a/apps/client/src/scenes/game/entities/bomb/BombManager.ts b/apps/client/src/scenes/game/entities/bomb/BombManager.ts
new file mode 100644
index 0000000..7691fb2
--- /dev/null
+++ b/apps/client/src/scenes/game/entities/bomb/BombManager.ts
@@ -0,0 +1,129 @@
+/**
+ * BombManager
+ * 爆弾エンティティの生成，更新，破棄を管理する
+ * クールダウンと設置位置解決をまとめて扱う
+ */
+import type { Container } from "pixi.js";
+import { config } from "@client/config";
+import type { BombPlacedPayload } from "@repo/shared";
+import { LocalPlayerController } from "@client/scenes/game/entities/player/PlayerController";
+import { BombController } from "./BombController";
+import type { GamePlayers } from "@client/scenes/game/application/game.types";
+
+/** 経過時間ミリ秒を返す関数型 */
+export type ElapsedMsProvider = () => number;
+
+/** 爆弾の追加更新に使う入力データ型 */
+export type BombUpsertPayload = BombPlacedPayload & {
+  radiusGrid?: number;
+};
+
+/** 爆弾設置時に返す結果型 */
+export type BombPlacementResult = {
+  bombId: string;
+  payload: BombPlacedPayload;
+};
+
+/** 爆弾ペイロードから一意キーを生成する */
+export const createBombIdFromPayload = (payload: BombPlacedPayload): string => {
+  return `${payload.x}:${payload.y}:${payload.explodeAtElapsedMs}`;
+};
+
+type BombManagerOptions = {
+  worldContainer: Container;
+  players: GamePlayers;
+  myId: string;
+  getElapsedMs: ElapsedMsProvider;
+};
+
+/** 爆弾エンティティのライフサイクルを管理する */
+export class BombManager {
+  private worldContainer: Container;
+  private players: GamePlayers;
+  private myId: string;
+  private getElapsedMs: ElapsedMsProvider;
+  private bombs = new Map<string, BombController>();
+  private lastBombPlacedElapsedMs = Number.NEGATIVE_INFINITY;
+
+  constructor({ worldContainer, players, myId, getElapsedMs }: BombManagerOptions) {
+    this.worldContainer = worldContainer;
+    this.players = players;
+    this.myId = myId;
+    this.getElapsedMs = getElapsedMs;
+  }
+
+  /** 自プレイヤー位置に爆弾を設置し，生成IDを返す */
+  public placeBomb(): BombPlacementResult | null {
+    const me = this.players[this.myId];
+    if (!me || !(me instanceof LocalPlayerController)) return null;
+
+    const elapsedMs = this.getElapsedMs();
+    const { BOMB_COOLDOWN_MS, BOMB_FUSE_MS } = config.GAME_CONFIG;
+    if (elapsedMs - this.lastBombPlacedElapsedMs < BOMB_COOLDOWN_MS) {
+      return null;
+    }
+
+    const position = me.getPosition();
+    const payload: BombPlacedPayload = {
+      x: position.x,
+      y: position.y,
+      explodeAtElapsedMs: elapsedMs + BOMB_FUSE_MS,
+    };
+    const bombId = createBombIdFromPayload(payload);
+
+    this.upsertBomb(bombId, payload);
+    this.lastBombPlacedElapsedMs = elapsedMs;
+    return {
+      bombId,
+      payload,
+    };
+  }
+
+  /** 指定IDの爆弾を追加または更新する */
+  public upsertBomb(bombId: string, payload: BombUpsertPayload): void {
+    const current = this.bombs.get(bombId);
+    if (current) {
+      this.worldContainer.removeChild(current.getDisplayObject());
+      current.destroy();
+    }
+
+    const resolvedPayload = {
+      ...payload,
+      radiusGrid: payload.radiusGrid ?? config.GAME_CONFIG.BOMB_RADIUS_GRID,
+    };
+
+    const bomb = new BombController(resolvedPayload);
+    this.bombs.set(bombId, bomb);
+    this.worldContainer.addChild(bomb.getDisplayObject());
+  }
+
+  /** 指定IDの爆弾を削除する */
+  public removeBomb(bombId: string): void {
+    const bomb = this.bombs.get(bombId);
+    if (!bomb) return;
+
+    this.worldContainer.removeChild(bomb.getDisplayObject());
+    bomb.destroy();
+    this.bombs.delete(bombId);
+  }
+
+  /** 爆弾状態を更新し終了済みを破棄する */
+  public tick(): void {
+    const elapsedMs = this.getElapsedMs();
+
+    this.bombs.forEach((bomb, bombId) => {
+      bomb.tick(elapsedMs);
+
+      if (bomb.isFinished()) {
+        this.removeBomb(bombId);
+        return;
+      }
+    });
+  }
+
+  /** 管理中の爆弾をすべて破棄する */
+  public destroy(): void {
+    this.bombs.forEach((bomb) => bomb.destroy());
+    this.bombs.clear();
+  }
+}
\ No newline at end of file