diff --git a/titles/chuni/base.py b/titles/chuni/base.py
index 6cd568a..de01463 100644
--- a/titles/chuni/base.py
+++ b/titles/chuni/base.py
@@ -38,7 +38,7 @@ class ChuniBase:
             self.logger.warn(
                 "User ID %d attempted to log in while having a profile lock expiring on %s.",
                 user_id, lock_result["expires_at"],
-                extra=lock_result["extra"]
+                extra=lock_result["extra"] or {}
             )
             return {"returnCode": 0}
 
@@ -669,9 +669,12 @@ class ChuniBase:
         return bytes([ord(c) for c in src]).decode("utf-8")
 
     async def handle_get_user_preview_api_request(self, data: Dict) -> Dict:
-        profile = await self.data.profile.get_profile_preview(data["userId"], self.version)
+        user_id = int(data["userId"])
+        profile = await self.data.profile.get_profile_preview(user_id, self.version)
+        
         if profile is None:
             return None
+        
         profile_character = await self.data.item.get_character(
             data["userId"], profile["characterId"]
         )
@@ -683,10 +686,12 @@ class ChuniBase:
             chara.pop("id")
             chara.pop("user")
 
+        lock_result = await self.data.user.check_lock_for_game(user_id, self.game)
+
         return {
             "userId": data["userId"],
             # Current Login State
-            "isLogin": False,
+            "isLogin": lock_result is not None,
             "lastLoginDate": profile["lastPlayDate"],
             # User Profile
             "userName": profile["userName"],
diff --git a/titles/chuni/new.py b/titles/chuni/new.py
index 12d04e7..37a73a3 100644
--- a/titles/chuni/new.py
+++ b/titles/chuni/new.py
@@ -152,9 +152,12 @@ class ChuniNew(ChuniBase):
         return {"userId": data["userId"], "symbolCharInfoList": []}
 
     async def handle_get_user_preview_api_request(self, data: Dict) -> Dict:
-        profile = await self.data.profile.get_profile_preview(data["userId"], self.version)
+        user_id = int(data["userId"])
+        profile = await self.data.profile.get_profile_preview(user_id, self.version)
+        
         if profile is None:
             return None
+        
         profile_character = await self.data.item.get_character(
             data["userId"], profile["characterId"]
         )
@@ -165,11 +168,13 @@ class ChuniNew(ChuniBase):
             chara = profile_character._asdict()
             chara.pop("id")
             chara.pop("user")
+        
+        lock_result = await self.data.user.check_lock_for_game(user_id, self.game)
 
         data1 = {
             "userId": data["userId"],
             # Current Login State
-            "isLogin": False,
+            "isLogin": lock_result is not None,
             "lastLoginDate": profile["lastPlayDate"],
             # User Profile
             "userName": profile["userName"],