diff --git a/EpinelPS/LobbyServer/LobbyUser/SetNickname.cs b/EpinelPS/LobbyServer/LobbyUser/SetNickname.cs
index 4a8799e..cd20dc6 100644
--- a/EpinelPS/LobbyServer/LobbyUser/SetNickname.cs
+++ b/EpinelPS/LobbyServer/LobbyUser/SetNickname.cs
@@ -1,4 +1,5 @@
-using EpinelPS.Utils;
+using EpinelPS.Database;
+using EpinelPS.Utils;
 
 namespace EpinelPS.LobbyServer.LobbyUser
 {
@@ -15,6 +16,8 @@ namespace EpinelPS.LobbyServer.LobbyUser
             response.Result = SetNicknameResult.SetNicknameResultOkay;
             response.Nickname = req.Nickname;
 
+            JsonDb.Save();
+
             await WriteDataAsync(response);
         }
     }
diff --git a/EpinelPS/LobbyServer/LobbyUser/SetNicknameFree.cs b/EpinelPS/LobbyServer/LobbyUser/SetNicknameFree.cs
index 1566247..48cee3d 100644
--- a/EpinelPS/LobbyServer/LobbyUser/SetNicknameFree.cs
+++ b/EpinelPS/LobbyServer/LobbyUser/SetNicknameFree.cs
@@ -1,4 +1,5 @@
-using EpinelPS.Utils;
+using EpinelPS.Database;
+using EpinelPS.Utils;
 
 namespace EpinelPS.LobbyServer.LobbyUser
 {
@@ -15,6 +16,8 @@ namespace EpinelPS.LobbyServer.LobbyUser
             response.Result = SetNicknameResult.SetNicknameResultOkay;
             response.Nickname = req.Nickname;
 
+            JsonDb.Save();
+
             await WriteDataAsync(response);
         }
     }
diff --git a/EpinelPS/LobbyServer/LobbyUser/SetNicknameInTutorial.cs b/EpinelPS/LobbyServer/LobbyUser/SetNicknameInTutorial.cs
new file mode 100644
index 0000000..f110027
--- /dev/null
+++ b/EpinelPS/LobbyServer/LobbyUser/SetNicknameInTutorial.cs
@@ -0,0 +1,24 @@
+using EpinelPS.Database;
+using EpinelPS.Utils;
+
+namespace EpinelPS.LobbyServer.LobbyUser
+{
+    [PacketPath("/user/SetNickNameInTutorial")]
+    public class SetNicknameInTutorial : LobbyMsgHandler
+    {
+        protected override async Task HandleAsync()
+        {
+            var req = await ReadData<ReqSetNicknameInTutorial>();
+            var user = GetUser();
+            user.Nickname = req.Nickname;
+
+            var response = new ResSetNicknameInTutorial();
+            response.Result = SetNicknameResult.SetNicknameResultOkay;
+            response.Nickname = req.Nickname;
+
+            JsonDb.Save();
+
+            await WriteDataAsync(response);
+        }
+    }
+}