diff --git a/Runtime/UXComponent/Controller/UXController.cs b/Runtime/UXComponent/Controller/UXController.cs
index 43b0097..e5ab88c 100644
--- a/Runtime/UXComponent/Controller/UXController.cs
+++ b/Runtime/UXComponent/Controller/UXController.cs
@@ -19,6 +19,7 @@ namespace AlicizaX.UI
             [SerializeField] private int _length = 2;
             [SerializeField] private string _description = string.Empty;
             [NonSerialized] private int _selectedIndex = -1;
+            [NonSerialized] private UXController _owner;
 
             public string Id => _id;
 
@@ -43,7 +44,16 @@ namespace AlicizaX.UI
             public int SelectedIndex
             {
                 get => _selectedIndex;
-                internal set => _selectedIndex = value;
+                set
+                {
+                    if (_owner == null)
+                    {
+                        SetSelectedIndexSilently(Mathf.Clamp(value, 0, Length - 1));
+                        return;
+                    }
+
+                    _owner.SetControllerIndexInternal(this, value);
+                }
             }
 
             internal void EnsureId()
@@ -53,6 +63,16 @@ namespace AlicizaX.UI
                     _id = Guid.NewGuid().ToString("N");
                 }
             }
+
+            internal void SetOwner(UXController owner)
+            {
+                _owner = owner;
+            }
+
+            internal void SetSelectedIndexSilently(int selectedIndex)
+            {
+                _selectedIndex = selectedIndex;
+            }
         }
 
         [SerializeField] private List<ControllerDefinition> _controllers = new List<ControllerDefinition>();
@@ -61,7 +81,14 @@ namespace AlicizaX.UI
         private readonly Dictionary<string, int> _controllerIdMap = new Dictionary<string, int>();
         private readonly Dictionary<string, int> _controllerNameMap = new Dictionary<string, int>();
 
-        public IReadOnlyList<ControllerDefinition> Controllers => _controllers;
+        public IReadOnlyList<ControllerDefinition> Controllers
+        {
+            get
+            {
+                EnsureInitialized();
+                return _controllers;
+            }
+        }
         public IReadOnlyList<UXBinding> Bindings => _bindings;
         public int ControllerCount => _controllers.Count;
 
@@ -103,6 +130,8 @@ namespace AlicizaX.UI
 
         public ControllerDefinition GetControllerAt(int index)
         {
+            EnsureInitialized();
+
             if (index < 0 || index >= _controllers.Count)
             {
                 return null;
@@ -243,7 +272,8 @@ namespace AlicizaX.UI
                 }
 
                 controller.EnsureId();
-                controller.SelectedIndex = Mathf.Clamp(controller.SelectedIndex, -1, controller.Length - 1);
+                controller.SetOwner(this);
+                controller.SetSelectedIndexSilently(Mathf.Clamp(controller.SelectedIndex, -1, controller.Length - 1));
 
                 if (string.IsNullOrWhiteSpace(controller.Name))
                 {
@@ -285,7 +315,7 @@ namespace AlicizaX.UI
                 return false;
             }
 
-            controller.SelectedIndex = selectedIndex;
+            controller.SetSelectedIndexSilently(selectedIndex);
             NotifyBindings(controller.Id, selectedIndex);
             return true;
         }