diff --git a/Common/Database/Character/CharacterData.cs b/Common/Database/Character/CharacterData.cs
index ec0608a..6eb42e0 100644
--- a/Common/Database/Character/CharacterData.cs
+++ b/Common/Database/Character/CharacterData.cs
@@ -24,6 +24,7 @@ public class CharacterInfo
     public uint WeaponUniqueId { get; set; }
     public uint SkinId { get; set; }
     public uint WeaponSkinId { get; set; }
+    public uint SupportTeamIndex { get; set; } = 1;
     public ItemFlagEnum Flag { get; set; } = ItemFlagEnum.FLAG_READED;
     public uint Expiration { get; set; }
     [SugarColumn(IsJson = true)] public List<uint> UnlockedSkin { get; set; } = [];
@@ -58,6 +59,7 @@ public class CharacterInfo
         proto.Slots[(uint)ItemCardSlotTypeEnum.SLOT_WEAPON] = WeaponUniqueId;
         proto.Slots[(uint)ItemCardSlotTypeEnum.SLOT_SKIN] = SkinId;
         proto.Slots[(uint)ItemCardSlotTypeEnum.SLOT_WEAPON_SKIN] = WeaponSkinId;
+        proto.Slots[(uint)ItemCardSlotTypeEnum.SLOT_SUPPORTERINDEX] = SupportTeamIndex;
         foreach (var (slot, uid) in SupportSlots)
             proto.Slots[slot] = uid;
 
diff --git a/GameServer/Server/CallGS/Handlers/Girl/RoleCard_SetSupporterTeamIndex.cs b/GameServer/Server/CallGS/Handlers/Girl/RoleCard_SetSupporterTeamIndex.cs
new file mode 100644
index 0000000..e16bc28
--- /dev/null
+++ b/GameServer/Server/CallGS/Handlers/Girl/RoleCard_SetSupporterTeamIndex.cs
@@ -0,0 +1,37 @@
+using MikuSB.Proto;
+using System.Text.Json;
+using System.Text.Json.Nodes;
+using System.Text.Json.Serialization;
+
+namespace MikuSB.GameServer.Server.CallGS.Handlers.Girl;
+
+[CallGSApi("RoleCard_SetSupporterTeamIndex")]
+public class RoleCard_SetSupporterTeamIndex : ICallGSHandler
+{
+    public async Task Handle(Connection connection, string param, ushort seqNo)
+    {
+        var req = JsonSerializer.Deserialize<SetSupporterTeamIndexParam>(param);
+        if (req == null)
+        {
+            await CallGSRouter.SendScript(connection, "RoleCard_SetSupporterTeamIndex", "{\"err\":\"error.BadParam\"}");
+            return;
+        }
+        var player = connection.Player!;
+        var cardData = player.CharacterManager.GetCharacterByGUID(req.CardId);
+        if (cardData == null) return;
+
+        cardData.SupportTeamIndex = req.Index;
+        var sync = new NtfSyncPlayer
+        {
+            Items = { cardData.ToProto() }
+        };
+        await CallGSRouter.SendScript(connection, "RoleCard_SetSupporterTeamIndex", "null", sync);
+    }
+}
+
+internal sealed class SetSupporterTeamIndexParam
+{
+    [JsonPropertyName("Id")]
+    public uint CardId { get; set; }
+    public uint Index { get; set; }
+}
diff --git a/GameServer/Server/CallGS/Handlers/SupporterCard/SupporterCard_Equip.cs b/GameServer/Server/CallGS/Handlers/SupporterCard/SupporterCard_Equip.cs
index 25277d1..30d0a00 100644
--- a/GameServer/Server/CallGS/Handlers/SupporterCard/SupporterCard_Equip.cs
+++ b/GameServer/Server/CallGS/Handlers/SupporterCard/SupporterCard_Equip.cs
@@ -25,7 +25,8 @@ public class SupporterCard_Equip : ICallGSHandler
             return;
         }
 
-        var slot = (uint)req.EqSlot;
+        var teamIndex = card.SupportTeamIndex;
+        var slot = GetTeamIndex((uint)req.EqSlot, teamIndex);
 
         // If an existing card is equipped in this slot and bForce is false, ask for confirmation
         if (!req.Force && req.CurrentEquippedUid != 0 && card.SupportSlots.TryGetValue(slot, out var existing) && existing != 0)
@@ -46,6 +47,14 @@ public class SupporterCard_Equip : ICallGSHandler
         var responseApi = string.IsNullOrEmpty(req.Model) ? "Logistics_Change" : "Logistics_Equip";
         await CallGSRouter.SendScript(connection, responseApi, "{}", sync);
     }
+
+    private uint GetTeamIndex(uint slot, uint teamIndex)
+    {
+        if (teamIndex == 1) return slot;
+        if (teamIndex == 2) return slot + 7;
+        if (teamIndex == 3) return slot + 10;
+        return slot;
+    }
 }
 
 internal sealed class SupporterCardEquipParam