diff --git a/Entity/System/Club.cs b/Entity/System/Club.cs
index ca13c61..71af0ba 100644
--- a/Entity/System/Club.cs
+++ b/Entity/System/Club.cs
@@ -1,4 +1,5 @@
 using Milimoe.FunGame.Core.Interface.Entity;
+using Milimoe.FunGame.Core.Library.Constant;
 
 namespace Milimoe.FunGame.Core.Entity
 {
@@ -10,12 +11,19 @@ namespace Milimoe.FunGame.Core.Entity
         public bool IsNeedApproval { get; set; } = false;
         public bool IsPublic { get; set; } = false;
         public double ClubPoins { get; set; } = 0;
-        public User? Master { get; set; }
+        public User Master { get; set; } = General.UnknownUserInstance;
         public Dictionary<long, User> Admins { get; set; } = [];
         public Dictionary<long, User> Members { get; set; } = [];
         public Dictionary<long, User> Applicants { get; set; } = [];
+        public Dictionary<long, User> Invitees { get; set; } = [];
         public Dictionary<long, DateTime> MemberJoinTime { get; set; } = [];
         public Dictionary<long, DateTime> ApplicationTime { get; set; } = [];
+        public Dictionary<long, DateTime> InvitedTime { get; set; } = [];
+
+        public override string ToString()
+        {
+            return $"{Name} [{Prefix}]";
+        }
 
         public override bool Equals(IBaseEntity? other)
         {
diff --git a/Library/Common/JsonConverter/ClubConverter.cs b/Library/Common/JsonConverter/ClubConverter.cs
index c37e7eb..eb3980d 100644
--- a/Library/Common/JsonConverter/ClubConverter.cs
+++ b/Library/Common/JsonConverter/ClubConverter.cs
@@ -73,6 +73,13 @@ namespace Milimoe.FunGame.Core.Library.Common.JsonConverter
                         result.Applicants[id] = new(id);
                     }
                     break;
+                case nameof(Club.Invitees):
+                    List<long> invitees = NetworkUtility.JsonDeserialize<List<long>>(ref reader, options) ?? [];
+                    foreach (long id in invitees)
+                    {
+                        result.Invitees[id] = new(id);
+                    }
+                    break;
                 case nameof(Club.MemberJoinTime):
                     Dictionary<long, DateTime> memberJoinTime = NetworkUtility.JsonDeserialize<Dictionary<long, DateTime>>(ref reader, options) ?? [];
                     foreach (long id in memberJoinTime.Keys)
@@ -87,6 +94,13 @@ namespace Milimoe.FunGame.Core.Library.Common.JsonConverter
                         result.ApplicationTime[id] = applicationTime[id];
                     }
                     break;
+                case nameof(Club.InvitedTime):
+                    Dictionary<long, DateTime> invitedTime = NetworkUtility.JsonDeserialize<Dictionary<long, DateTime>>(ref reader, options) ?? [];
+                    foreach (long id in invitedTime.Keys)
+                    {
+                        result.InvitedTime[id] = invitedTime[id];
+                    }
+                    break;
             }
         }
 
@@ -111,10 +125,14 @@ namespace Milimoe.FunGame.Core.Library.Common.JsonConverter
             JsonSerializer.Serialize(writer, value.Members.Keys, options);
             writer.WritePropertyName(nameof(Club.Applicants));
             JsonSerializer.Serialize(writer, value.Applicants.Keys, options);
+            writer.WritePropertyName(nameof(Club.Invitees));
+            JsonSerializer.Serialize(writer, value.Invitees.Keys, options);
             writer.WritePropertyName(nameof(Club.MemberJoinTime));
             JsonSerializer.Serialize(writer, value.MemberJoinTime, options);
             writer.WritePropertyName(nameof(Club.ApplicationTime));
             JsonSerializer.Serialize(writer, value.ApplicationTime, options);
+            writer.WritePropertyName(nameof(Club.InvitedTime));
+            JsonSerializer.Serialize(writer, value.InvitedTime, options);
 
             writer.WriteEndObject();
         }
diff --git a/Model/TeamGamingQueue.cs b/Model/TeamGamingQueue.cs
index ef4d197..1ee7079 100644
--- a/Model/TeamGamingQueue.cs
+++ b/Model/TeamGamingQueue.cs
@@ -35,7 +35,7 @@ namespace Milimoe.FunGame.Core.Model
         /// <param name="characters"></param>
         public void AddTeam(string teamName, IEnumerable<Character> characters)
         {
-            if (teamName != "" && characters.Any())
+            if (teamName != "" && characters.Any(c => c.HP > 0))
             {
                 _teams.Add(teamName, new(teamName, characters));
             }
@@ -176,7 +176,6 @@ namespace Milimoe.FunGame.Core.Model
             if (killTeam != null)
             {
                 List<Character> actives = killTeam.GetActiveCharacters(this);
-                actives.Add(killer);
                 int remainCount = actives.Count;
                 if (remainCount > 0 && MaxRespawnTimes == 0)
                 {