diff --git a/apps/server/src/domains/game/GameManager.ts b/apps/server/src/domains/game/GameManager.ts
index 4bbc1f7..f910792 100644
--- a/apps/server/src/domains/game/GameManager.ts
+++ b/apps/server/src/domains/game/GameManager.ts
@@ -1,5 +1,4 @@
 import { GameLoop, type TickData } from "./GameLoop";
-import type { gridMapTypes } from "@repo/shared";
 import { Player } from "./entities/Player.js";
 import { PlayerRegistry } from "./application/services/PlayerRegistry";
 import { GameSessionService } from "./application/services/GameSessionService";
@@ -72,9 +71,4 @@
       .map((playerId) => this.playerRegistry.getPlayer(playerId))
       .filter((player): player is Player => player !== undefined);
   }
-
-  // 【一時的】移動したプレイヤーの足元を塗り、差分を返すメソッド
-  public paintAndGetUpdates(roomId: string, playerId: string): gridMapTypes.CellUpdate[] {
-    return this.gameSessionService.paintAndGetUpdates(roomId, playerId);
-  }
 }
\ No newline at end of file
diff --git a/apps/server/src/domains/game/application/services/GameSessionService.ts b/apps/server/src/domains/game/application/services/GameSessionService.ts
index 83ae1f3..060331a 100644
--- a/apps/server/src/domains/game/application/services/GameSessionService.ts
+++ b/apps/server/src/domains/game/application/services/GameSessionService.ts
@@ -1,5 +1,4 @@
-import { config, gridMapLogic } from "@repo/shared";
-import type { gridMapTypes } from "@repo/shared";
+import { config } from "@repo/shared";
 import { GameLoop, type TickData } from "../../GameLoop";
 import { Player } from "../../entities/Player.js";
 import { MapStore } from "../../states/MapStore";
@@ -85,19 +84,4 @@
       });
     }
   }
-
-  public paintAndGetUpdates(roomId: string, playerId: string): gridMapTypes.CellUpdate[] {
-    const mapStore = this.mapStores.get(roomId);
-    if (!mapStore) return [];
-
-    const player = this.players.get(playerId);
-    if (!player) return [];
-
-    const gridIndex = gridMapLogic.getGridIndexFromPosition(player.x, player.y);
-    if (gridIndex !== null) {
-      mapStore.paintCell(gridIndex, player.teamId);
-    }
-
-    return mapStore.getAndClearUpdates();
-  }
 }