diff --git a/PaperMania/Server.Tests/Application/Player/CreatePlayerDataUseCaseTests.cs b/PaperMania/Server.Tests/Application/Player/CreatePlayerDataUseCaseTests.cs
index 6a0691e..e622a0a 100644
--- a/PaperMania/Server.Tests/Application/Player/CreatePlayerDataUseCaseTests.cs
+++ b/PaperMania/Server.Tests/Application/Player/CreatePlayerDataUseCaseTests.cs
@@ -17,6 +17,7 @@ public class CreatePlayerDataUseCaseTests
     private readonly Mock<IAccountRepository> _accountRepositoryMock = new();
     private readonly Mock<ICurrencyRepository> _currencyRepositoryMock = new();
     private readonly Mock<ISessionService> _sessionServiceMock = new();
+    private readonly Mock<ICacheService> _cacheServiceMock = new();
     private readonly Mock<ITransactionScope> _transactionScopeMock = new();
     
     private CreatePlayerDataUseCase CreateUseCase() => new(
@@ -24,6 +25,7 @@ public class CreatePlayerDataUseCaseTests
         _accountRepositoryMock.Object,
         _currencyRepositoryMock.Object,
         _sessionServiceMock.Object,
+        _cacheServiceMock.Object,
         _transactionScopeMock.Object
     );
     
diff --git a/PaperMania/Server/Api/Controller/Data/CharacterController.cs b/PaperMania/Server/Api/Controller/Data/CharacterController.cs
index 3a7c7cf..3402260 100644
--- a/PaperMania/Server/Api/Controller/Data/CharacterController.cs
+++ b/PaperMania/Server/Api/Controller/Data/CharacterController.cs
@@ -94,7 +94,8 @@ public async Task<ActionResult<BaseResponse<GetAllPlayerCharactersResponse>>> Ge
     /// <summary>
     /// 유저의 보유 캐릭터를 추가합니다.
     /// </summary>
-    [HttpPost]
+    [SessionAuthorize] 
+    [HttpPost("player")]
     public async Task<ActionResult<BaseResponse<EmptyResponse>>> AddPlayerCharacterData(
         [FromBody] AddPlayerCharacterRequest request,
         CancellationToken ct)
diff --git a/PaperMania/Server/Application/UseCase/Auth/LoginUseCase.cs b/PaperMania/Server/Application/UseCase/Auth/LoginUseCase.cs
index 5b2548f..36964ac 100644
--- a/PaperMania/Server/Application/UseCase/Auth/LoginUseCase.cs
+++ b/PaperMania/Server/Application/UseCase/Auth/LoginUseCase.cs
@@ -42,8 +42,6 @@ public async Task<LoginResult> ExecuteAsync(LoginCommand request, CancellationTo
             ct
         );
         
-        Console.WriteLine($"[DEBUG] account.Id={account?.Id}");
-        
         if (account == null || string.IsNullOrEmpty(account.Password))
         {
             _passwordHasher.Verify(request.Password, "$2a$11$12345678901234567890123456789012345678901234567890123");
diff --git a/PaperMania/Server/Application/UseCase/Player/CreatePlayerDataUseCase.cs b/PaperMania/Server/Application/UseCase/Player/CreatePlayerDataUseCase.cs
index 64d8895..b04a2ce 100644
--- a/PaperMania/Server/Application/UseCase/Player/CreatePlayerDataUseCase.cs
+++ b/PaperMania/Server/Application/UseCase/Player/CreatePlayerDataUseCase.cs
@@ -7,6 +7,7 @@
 using Server.Application.UseCase.Player.Command;
 using Server.Application.UseCase.Player.Result;
 using Server.Domain.Entity;
+using Server.Infrastructure.Cache;
 
 namespace Server.Application.UseCase.Player;
 
@@ -16,6 +17,7 @@ public class CreatePlayerDataUseCase : ICreatePlayerDataUseCase
     private readonly IAccountRepository _accountRepository;
     private readonly ICurrencyRepository _currencyRepository;
     private readonly ISessionService _sessionService;
+    private readonly ICacheService _cacheService;
     private readonly ITransactionScope _transactionScope;
 
     public CreatePlayerDataUseCase(
@@ -23,12 +25,14 @@ public CreatePlayerDataUseCase(
         IAccountRepository  accountRepository,
         ICurrencyRepository currencyRepository,
         ISessionService sessionService,
+        ICacheService cacheService,
         ITransactionScope transactionScope)
     {
         _dataRepository = dataRepository;
         _accountRepository = accountRepository;
         _currencyRepository = currencyRepository;
         _sessionService = sessionService;
+        _cacheService = cacheService;
         _transactionScope = transactionScope;
     }
     
@@ -57,6 +61,8 @@ await _transactionScope.ExecuteAsync(async (innerCt) =>
             account.IsNewAccount = false;
             await _accountRepository.UpdateAsync(account, innerCt);
         }, ct);
+        
+        await _cacheService.DeleteAsync(CacheKey.Account.ByPlayerId(account.PlayerId), ct);
 
         return new AddPlayerDataResult(
             PlayerName: request.PlayerName