diff --git a/Runtime/FSM/SimpleFSM.cs b/Runtime/FSM/SimpleFSM.cs
index 5e0dd12..182ea45 100644
--- a/Runtime/FSM/SimpleFSM.cs
+++ b/Runtime/FSM/SimpleFSM.cs
@@ -3,7 +3,7 @@ using System.Runtime.CompilerServices;
 using AlicizaX;
 
 
-public interface IState : IMemory
+public interface IState
 {
     IUltraFSM Fsm { get; set; }
     bool IsRegistered { get; set; }
@@ -16,13 +16,6 @@ public interface IState : IMemory
 
 public abstract class StateBase<TState> : IState where TState : Enum
 {
-    public void Clear()
-    {
-        IsRegistered = false;
-        Fsm = null;
-    }
-
-    public bool fromPool { get; set; }
     public IUltraFSM Fsm { get; set; }
     public bool IsRegistered { get; set; }
 
@@ -160,7 +153,7 @@ public sealed class SimpleFSM<TState> : IUltraFSM where TState : Enum
     }
 
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-    public void Register<T>(TState stateId) where T : class, IMemory, IState, new()
+    public void Register<T>(TState stateId) where T : class, IState, new()
     {
         int stateIdValue = Convert.ToInt32(stateId);
         if (stateIdValue < 0)
@@ -174,7 +167,6 @@ public sealed class SimpleFSM<TState> : IUltraFSM where TState : Enum
         if (existingState != null && existingState.IsRegistered)
         {
             existingState.Destroy();
-            MemoryPool.Release(existingState);
             _registeredCount--;
         }