diff --git a/Assets/Resources/Fonts/Pretendard/Pretendard-Regular SDF.asset b/Assets/Resources/Fonts/Pretendard/Pretendard-Regular SDF.asset
index 0eeec131..38eef7be 100644
--- a/Assets/Resources/Fonts/Pretendard/Pretendard-Regular SDF.asset	
+++ b/Assets/Resources/Fonts/Pretendard/Pretendard-Regular SDF.asset	
@@ -12,9 +12,9 @@ Texture2D:
     Hash: 00000000000000000000000000000000
   m_IsAlphaChannelOptional: 0
   serializedVersion: 4
-  m_Width: 4096
-  m_Height: 4096
-  m_CompleteImageSize: 16777216
+  m_Width: 1
+  m_Height: 1
+  m_CompleteImageSize: 1
   m_MipsStripped: 0
   m_TextureFormat: 1
   m_MipCount: 1
@@ -39,8 +39,8 @@ Texture2D:
   m_LightmapFormat: 0
   m_ColorSpace: 0
   m_PlatformBlob: 
-  image data: 16777216
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diff --git a/Assets/Scenes/Studio.unity b/Assets/Scenes/Studio.unity
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   references:
     version: 2
     RefIds:
@@ -4994,6 +5604,706 @@ MonoBehaviour:
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       type: {class: Command_Redo, ns: RTGLite, asm: Assembly-CSharp}
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+            rid: 4274479427360391399
+          mDefaultBinding:
+            alt: 0
+            control: 0
+            command: 0
+            shift: 0
+            leftMB: 0
+            middleMB: 0
+            rightMB: 0
+            key: 21
+          mBinding:
+            alt: 0
+            control: 0
+            command: 0
+            shift: 0
+            leftMB: 0
+            middleMB: 0
+            rightMB: 0
+            key: 21
+          mEnabled: 1
+          mName: Action Mode
+          mBindingDisplayText: G
+          mCommandType: 1
+          mStrictModifierCheck: 1
+          mCommand:
+            rid: 4274479427360391403
+          mContext:
+            rid: 4274479427360391401
+          mConflicts: []
+        - mCategory:
+            rid: 4274479427360391399
+          mDefaultBinding:
+            alt: 0
+            control: 0
+            command: 0
+            shift: 0
+            leftMB: 1
+            middleMB: 0
+            rightMB: 0
+            key: 0
+          mBinding:
+            alt: 0
+            control: 0
+            command: 0
+            shift: 0
+            leftMB: 1
+            middleMB: 0
+            rightMB: 0
+            key: 0
+          mEnabled: 1
+          mName: Snap to Pick-Point
+          mBindingDisplayText: Left MB
+          mCommandType: 0
+          mStrictModifierCheck: 1
+          mCommand:
+            rid: 4274479427360391404
+          mContext:
+            rid: 4274479427360391405
+          mConflicts: []
+        - mCategory:
+            rid: 4274479427360391399
+          mDefaultBinding:
+            alt: 0
+            control: 0
+            command: 0
+            shift: 0
+            leftMB: 0
+            middleMB: 0
+            rightMB: 1
+            key: 0
+          mBinding:
+            alt: 0
+            control: 0
+            command: 0
+            shift: 0
+            leftMB: 0
+            middleMB: 0
+            rightMB: 1
+            key: 0
+          mEnabled: 1
+          mName: Snap to Pick-Point Extents
+          mBindingDisplayText: Right MB
+          mCommandType: 0
+          mStrictModifierCheck: 1
+          mCommand:
+            rid: 4274479427360391406
+          mContext:
+            rid: 4274479427360391405
+          mConflicts: []
+    - rid: 4274479427360391400
+      type: {class: Command_Grid_StepMoveDown, ns: RTGLite, asm: Assembly-CSharp}
+      data: 
+    - rid: 4274479427360391401
+      type: {class: Context_SceneView, ns: RTGLite, asm: Assembly-CSharp}
+      data:
+        mName: Scene View
+    - rid: 4274479427360391402
+      type: {class: Command_Grid_StepMoveUp, ns: RTGLite, asm: Assembly-CSharp}
+      data: 
+    - rid: 4274479427360391403
+      type: {class: Command_Grid_ActionMode, ns: RTGLite, asm: Assembly-CSharp}
+      data: 
+    - rid: 4274479427360391404
+      type: {class: Command_Grid_SnapToPickPoint, ns: RTGLite, asm: Assembly-CSharp}
+      data: 
+    - rid: 4274479427360391405
+      type: {class: Context_Grid_ActionMode, ns: RTGLite, asm: Assembly-CSharp}
+      data:
+        mName: Grid Action Mode
+    - rid: 4274479427360391406
+      type: {class: Command_Grid_SnapToPickPointExtents, ns: RTGLite, asm: Assembly-CSharp}
+      data: 
+    - rid: 4274479427360391407
+      type: {class: ShortcutCategory, ns: RTGLite, asm: Assembly-CSharp}
+      data:
+        mName: Gizmos
+        mShortcuts:
+        - mCategory:
+            rid: 4274479427360391407
+          mDefaultBinding:
+            alt: 0
+            control: 1
+            command: 0
+            shift: 0
+            leftMB: 0
+            middleMB: 0
+            rightMB: 0
+            key: 0
+          mBinding:
+            alt: 0
+            control: 1
+            command: 0
+            shift: 0
+            leftMB: 0
+            middleMB: 0
+            rightMB: 0
+            key: 0
+          mEnabled: 1
+          mName: Snap
+          mBindingDisplayText: Control
+          mCommandType: 1
+          mStrictModifierCheck: 0
+          mCommand:
+            rid: 4274479427360391408
+          mContext:
+            rid: 4274479427360391401
+          mConflicts: []
+        - mCategory:
+            rid: 4274479427360391407
+          mDefaultBinding:
+            alt: 0
+            control: 0
+            command: 0
+            shift: 0
+            leftMB: 0
+            middleMB: 0
+            rightMB: 0
+            key: 36
+          mBinding:
+            alt: 0
+            control: 0
+            command: 0
+            shift: 0
+            leftMB: 0
+            middleMB: 0
+            rightMB: 0
+            key: 36
+          mEnabled: 1
+          mName: Vertex Snap
+          mBindingDisplayText: V
+          mCommandType: 1
+          mStrictModifierCheck: 1
+          mCommand:
+            rid: 4274479427360391409
+          mContext:
+            rid: 4274479427360391401
+          mConflicts: []
+        - mCategory:
+            rid: 4274479427360391407
+          mDefaultBinding:
+            alt: 0
+            control: 0
+            command: 0
+            shift: 1
+            leftMB: 0
+            middleMB: 0
+            rightMB: 0
+            key: 0
+          mBinding:
+            alt: 0
+            control: 0
+            command: 0
+            shift: 1
+            leftMB: 0
+            middleMB: 0
+            rightMB: 0
+            key: 0
+          mEnabled: 1
+          mName: Alt Mode
+          mBindingDisplayText: Shift
+          mCommandType: 1
+          mStrictModifierCheck: 0
+          mCommand:
+            rid: 4274479427360391410
+          mContext:
+            rid: 4274479427360391401
+          mConflicts: []
+    - rid: 4274479427360391408
+      type: {class: Command_Gizmos_Snap, ns: RTGLite, asm: Assembly-CSharp}
+      data: 
+    - rid: 4274479427360391409
+      type: {class: Command_Gizmos_VertexSnap, ns: RTGLite, asm: Assembly-CSharp}
+      data: 
+    - rid: 4274479427360391410
+      type: {class: Command_Gizmos_AltMode, ns: RTGLite, asm: Assembly-CSharp}
+      data: 
+    - rid: 4274479427360391411
+      type: {class: ShortcutCategory, ns: RTGLite, asm: Assembly-CSharp}
+      data:
+        mName: Undo/Redo
+        mShortcuts:
+        - mCategory:
+            rid: 4274479427360391411
+          mDefaultBinding:
+            alt: 0
+            control: 1
+            command: 0
+            shift: 0
+            leftMB: 0
+            middleMB: 0
+            rightMB: 0
+            key: 40
+          mBinding:
+            alt: 0
+            control: 1
+            command: 0
+            shift: 0
+            leftMB: 0
+            middleMB: 0
+            rightMB: 0
+            key: 40
+          mEnabled: 1
+          mName: Undo
+          mBindingDisplayText: Control + Z
+          mCommandType: 0
+          mStrictModifierCheck: 1
+          mCommand:
+            rid: 4274479427360391412
+          mContext:
+            rid: 4274479427360391413
+          mConflicts: []
+        - mCategory:
+            rid: 4274479427360391411
+          mDefaultBinding:
+            alt: 0
+            control: 1
+            command: 0
+            shift: 0
+            leftMB: 0
+            middleMB: 0
+            rightMB: 0
+            key: 39
+          mBinding:
+            alt: 0
+            control: 1
+            command: 0
+            shift: 0
+            leftMB: 0
+            middleMB: 0
+            rightMB: 0
+            key: 39
+          mEnabled: 1
+          mName: Redo
+          mBindingDisplayText: Control + Y
+          mCommandType: 0
+          mStrictModifierCheck: 1
+          mCommand:
+            rid: 4274479427360391414
+          mContext:
+            rid: 4274479427360391413
+          mConflicts: []
+    - rid: 4274479427360391412
+      type: {class: Command_Undo, ns: RTGLite, asm: Assembly-CSharp}
+      data: 
+    - rid: 4274479427360391413
+      type: {class: Context_Global, ns: RTGLite, asm: Assembly-CSharp}
+      data:
+        mName: Global
+    - rid: 4274479427360391414
+      type: {class: Command_Redo, ns: RTGLite, asm: Assembly-CSharp}
+      data: 
 --- !u!114 &1530095533 stripped
 MonoBehaviour:
   m_CorrespondingSourceObject: {fileID: -5269853908805418363, guid: 43766caa723360d4c97983845e6749fe, type: 3}
@@ -5432,11 +6742,6 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 78317a25e947ddc45bdc8bfba842629e, type: 3}
   m_Name: 
   m_EditorClassIdentifier: Assembly-CSharp::UVC.Studio.Manager.SelectionInputHandler
-  raycastCamera: {fileID: 330585545}
-  raycastLayerMask:
-    serializedVersion: 2
-    m_Bits: 64
-  raycastDistance: 1000000
 --- !u!4 &2056305547
 Transform:
   m_ObjectHideFlags: 0
diff --git a/Assets/Scripts/Studio/Config/Setting.cs b/Assets/Scripts/Studio/Config/Setting.cs
index 1918b96c..2e359581 100644
--- a/Assets/Scripts/Studio/Config/Setting.cs
+++ b/Assets/Scripts/Studio/Config/Setting.cs
@@ -218,7 +218,7 @@ namespace UVC.Studio.Config
         /// <returns>저장 성공 여부</returns>
         public async UniTask<bool> SaveAsync(CancellationToken cancellationToken = default)
         {
-            string path = Path.Combine(Application.streamingAssetsPath, FileName);
+            string path = Path.Combine(Application.streamingAssetsPath, "Studio", FileName);
             if (useAppDataPath)
             {
                 path = Path.Combine(Application.persistentDataPath, FileName);
@@ -258,7 +258,7 @@ namespace UVC.Studio.Config
         #region Sync Methods
 
         /// <summary>
-        /// StreamingAssets/Settings.json 파일에서 설정을 동기로 로드합니다.
+        /// StreamingAssets/Studio/Settings.json 파일에서 설정을 동기로 로드합니다.
         /// </summary>
         /// <returns>로드 성공 여부</returns>
         /// <remarks>
@@ -267,7 +267,11 @@ namespace UVC.Studio.Config
         /// </remarks>
         public bool Load()
         {
-            string path = Path.Combine(Application.streamingAssetsPath, FileName);
+            string path = Path.Combine(Application.streamingAssetsPath, "Studio", FileName);
+            if (useAppDataPath)
+            {
+                path = Path.Combine(Application.persistentDataPath, FileName);
+            }
 
             if (!File.Exists(path))
             {
@@ -303,8 +307,11 @@ namespace UVC.Studio.Config
         /// </remarks>
         public bool Save()
         {
-            string path = Path.Combine(Application.streamingAssetsPath, FileName);
-
+            string path = Path.Combine(Application.streamingAssetsPath, "Studio", FileName);
+            if (useAppDataPath)
+            {
+                path = Path.Combine(Application.persistentDataPath, FileName);
+            }
             try
             {
                 // Newtonsoft.Json 사용으로 float 정밀도 문제 해결
diff --git a/Assets/Scripts/Studio/Manager/SelectionInputHandler.cs b/Assets/Scripts/Studio/Manager/SelectionInputHandler.cs
index bf668a7f..0e8d64b7 100644
--- a/Assets/Scripts/Studio/Manager/SelectionInputHandler.cs
+++ b/Assets/Scripts/Studio/Manager/SelectionInputHandler.cs
@@ -1,5 +1,6 @@
 #nullable enable
 using System.Collections.Generic;
+using RTGLite;
 using UnityEngine;
 using UnityEngine.EventSystems;
 using UnityEngine.UI;
@@ -9,21 +10,10 @@ namespace UVC.Studio.Manager
 {
     /// <summary>
     /// 화면에서 마우스 클릭을 감지하여 객체 선택을 처리하는 컴포넌트
+    /// RTScene.Raycast를 사용하여 Collider 없이도 MeshRenderer 기반으로 객체 감지
     /// </summary>
     public class SelectionInputHandler : MonoBehaviour
     {
-        [SerializeField]
-        [Tooltip("클릭 감지에 사용할 카메라 (null이면 Camera.main 사용)")]
-        private Camera? raycastCamera;
-
-        [SerializeField]
-        [Tooltip("레이캐스트 대상 레이어")]
-        private LayerMask raycastLayerMask = ~0; // 기본값: 모든 레이어
-
-        [SerializeField]
-        [Tooltip("레이캐스트 최대 거리")]
-        private float raycastDistance = 1000f;
-
         private SelectionManager? _selectionManager;
         private StageObjectManager? _stageObjectManager;
 
@@ -49,7 +39,9 @@ namespace UVC.Studio.Manager
         protected void Update()
         {
             // 마우스 왼쪽 버튼 클릭 감지
-            if (Input.GetMouseButtonDown(0))
+            // 기즈모 UI 위에서는 선택하지 않음
+            if (Input.GetMouseButtonUp(0) &&
+                (RTGizmos.get == null || !RTGizmos.get.IsGizmoGUIHovered()))
             {
                 HandleClick();
             }
@@ -60,62 +52,71 @@ namespace UVC.Studio.Manager
         /// </summary>
         private void HandleClick()
         {
-            Debug.Log("[SelectionInputHandler] HandleClick called");
-
-            // UI 위에서 클릭한 경우 무시 (실제 상호작용 가능한 UI만 체크)
+            // UI 위에서 클릭한 경우 무시
             if (IsPointerOverInteractableUI())
             {
-                Debug.Log("[SelectionInputHandler] Clicked on interactable UI, ignoring.");
                 return;
             }
 
             if (_selectionManager == null || _stageObjectManager == null)
             {
-                Debug.LogWarning($"[SelectionInputHandler] Manager is null - SelectionManager: {_selectionManager != null}, StageObjectManager: {_stageObjectManager != null}");
                 return;
             }
 
-            var camera = raycastCamera != null ? raycastCamera : Camera.main;
-            if (camera == null)
+            // RTScene을 사용한 레이캐스트 (Collider 없이 MeshRenderer로 감지)
+            var pickedObject = PickObject();
+            Debug.Log($"[SelectionInputHandler] Picked Object: {(pickedObject != null ? pickedObject.name : "None")}");
+
+            // Shift 또는 Ctrl 키로 다중 선택
+            bool addToSelection = Input.GetKey(KeyCode.LeftShift) ||
+                                  Input.GetKey(KeyCode.RightShift) ||
+                                  Input.GetKey(KeyCode.LeftControl) ||
+                                  Input.GetKey(KeyCode.RightControl);
+
+            if (pickedObject == null)
             {
-                Debug.LogWarning("[SelectionInputHandler] No camera available for raycast.");
-                return;
-            }
-
-            // 마우스 위치에서 레이 생성
-            Ray ray = camera.ScreenPointToRay(Input.mousePosition);
-            Debug.Log($"[SelectionInputHandler] Raycast from {Input.mousePosition}, camera: {camera.name}, layerMask: {raycastLayerMask.value}");
-
-            // 레이캐스트 수행
-            if (Physics.Raycast(ray, out RaycastHit hit, raycastDistance, raycastLayerMask))
-            {
-                // 클릭된 객체 또는 부모에서 StageObject 찾기
-                var stageObject = FindStageObject(hit.collider.gameObject);
-
-                if (stageObject != null)
+                // 빈 공간 클릭 시 선택 해제 (다중 선택 키가 눌려있지 않을 때만)
+                if (!addToSelection)
                 {
-                    // Shift 또는 Ctrl 키로 다중 선택
-                    bool addToSelection = Input.GetKey(KeyCode.LeftShift) ||
-                                          Input.GetKey(KeyCode.RightShift) ||
-                                          Input.GetKey(KeyCode.LeftControl) ||
-                                          Input.GetKey(KeyCode.RightControl);
+                    _selectionManager.DeselectAll();
+                }
+                return;
+            }
 
-                    _selectionManager.Select(stageObject, addToSelection);
-                    Debug.Log($"[SelectionInputHandler] Selected: {stageObject.GameObject?.name}");
+            // 클릭된 객체 또는 부모에서 StageObject 찾기
+            var stageObject = FindStageObject(pickedObject);
+
+            if (stageObject != null)
+            {
+                if (addToSelection)
+                {
+                    // 다중 선택: 토글
+                    _selectionManager.ToggleSelection(stageObject, true);
                 }
                 else
                 {
-                    // StageObject가 아닌 곳 클릭 시 선택 해제
-                    _selectionManager.DeselectAll();
-                    Debug.Log("[SelectionInputHandler] Clicked on non-stage object, deselected all.");
+                    // 단일 선택
+                    _selectionManager.Select(stageObject, false);
                 }
             }
-            else
+        }
+
+        /// <summary>
+        /// Physics.Raycast를 사용하여 마우스 위치에서 객체를 픽킹합니다.
+        /// </summary>
+        /// <returns>픽킹된 GameObject, 없으면 null</returns>
+        private GameObject? PickObject()
+        {
+            if (Camera.main == null) return null;
+
+            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
+
+            if (Physics.Raycast(ray, out RaycastHit hit))
             {
-                // 빈 공간 클릭 시 선택 해제
-                _selectionManager.DeselectAll();
-                Debug.Log("[SelectionInputHandler] Clicked on empty space, deselected all.");
+                return hit.collider.gameObject;
             }
+
+            return null;
         }
 
         /// <summary>
@@ -141,25 +142,8 @@ namespace UVC.Studio.Manager
             return null;
         }
 
-        /// <summary>
-        /// 레이캐스트 카메라 설정
-        /// </summary>
-        public void SetCamera(Camera camera)
-        {
-            raycastCamera = camera;
-        }
-
-        /// <summary>
-        /// 레이캐스트 레이어 마스크 설정
-        /// </summary>
-        public void SetLayerMask(LayerMask layerMask)
-        {
-            raycastLayerMask = layerMask;
-        }
-
         /// <summary>
         /// 실제 상호작용 가능한 UI 위에 포인터가 있는지 확인
-        /// raycastTarget이 true이고, 불투명한 UI 요소만 체크
         /// </summary>
         private bool IsPointerOverInteractableUI()
         {
@@ -182,12 +166,9 @@ namespace UVC.Studio.Manager
                 var graphic = result.gameObject.GetComponent<Graphic>();
                 if (graphic != null && graphic.raycastTarget)
                 {
-                    // 알파값이 일정 이상인 경우에만 UI로 인식
-                    // 또는 상호작용 가능한 컴포넌트가 있는 경우
                     var selectable = result.gameObject.GetComponentInParent<Selectable>();
                     var hasInteraction = selectable != null && selectable.interactable;
 
-                    // 불투명한 UI이거나 상호작용 가능한 UI인 경우
                     if (graphic.color.a > 0.1f || hasInteraction)
                     {
                         return true;
diff --git a/Assets/Scripts/Studio/Manager/SelectionManager.cs b/Assets/Scripts/Studio/Manager/SelectionManager.cs
index 85d653a0..714c32b5 100644
--- a/Assets/Scripts/Studio/Manager/SelectionManager.cs
+++ b/Assets/Scripts/Studio/Manager/SelectionManager.cs
@@ -103,6 +103,11 @@ namespace UVC.Studio.Manager
         /// </summary>
         private bool _gizmosInitialized = false;
 
+        /// <summary>
+        /// 기즈모 타겟 객체 리스트 (캐시)
+        /// </summary>
+        private readonly List<GameObject> _gizmoTargetObjects = new();
+
         #endregion
 
         #region Events
@@ -191,6 +196,9 @@ namespace UVC.Studio.Manager
 
             // PropertyWindow에 선택된 객체의 속성 표시
             DisplayEquipmentProperties(stageObject);
+
+            // 기즈모 타겟 업데이트
+            UpdateGizmoTargets();
         }
 
         /// <summary>
@@ -235,7 +243,11 @@ namespace UVC.Studio.Manager
                         _propertyWindow.Clear();
                     }
                     _currentDisplayedObject = null;
+                    _gizmoTargetObjects.Clear();
                 }
+
+                // 기즈모 타겟 업데이트
+                UpdateGizmoTargets();
             }
         }
 
@@ -879,6 +891,10 @@ namespace UVC.Studio.Manager
             _rotateGizmo = RTGizmos.get.CreateObjectRotateGizmo();
             _scaleGizmo = RTGizmos.get.CreateObjectScaleGizmo();
 
+            _moveGizmo.objectTransformGizmo.pivot  = EGizmoPivot.Center;
+            _rotateGizmo.objectTransformGizmo.pivot  = EGizmoPivot.Center;
+            _scaleGizmo.objectTransformGizmo.pivot  = EGizmoPivot.Center;
+
             // 기본적으로 모든 기즈모 비활성화 (Select 모드)
             _moveGizmo.enabled = false;
             _rotateGizmo.enabled = false;
@@ -890,96 +906,6 @@ namespace UVC.Studio.Manager
             Debug.Log("[SelectionManager] 기즈모가 초기화되었습니다.");
         }
 
-        /// <summary>
-        /// 마우스 위치에서 객체를 픽킹합니다. RTScene.Raycast를 사용합니다.
-        /// </summary>
-        /// <returns>픽킹된 GameObject, 없으면 null</returns>
-        public GameObject? PickObject()
-        {
-            if (RTScene.get == null) return null;
-
-            // 마우스 위치에서 Ray 생성
-            Ray ray = Camera.main.ScreenPointToRay(UnityEngine.Input.mousePosition);
-
-            // RTScene의 Raycast 사용 (Collider 없이도 MeshRenderer로 감지)
-            if (RTScene.get.Raycast(ray, null, false, out SceneRayHit rayHit))
-            {
-                return rayHit.objectHit.gameObject;
-            }
-
-            return null;
-        }
-
-        /// <summary>
-        /// 마우스 클릭으로 객체를 선택합니다. Update에서 호출됩니다.
-        /// </summary>
-        /// <param name="addToSelection">다중 선택 여부 (Ctrl 키 누름)</param>
-        public void HandleMouseSelection(bool addToSelection = false)
-        {
-            var pickedObject = PickObject();
-
-            if (pickedObject == null)
-            {
-                // 빈 공간 클릭 시 선택 해제 (Ctrl 키가 눌려있지 않을 때만)
-                if (!addToSelection)
-                {
-                    DeselectAll();
-                    UpdateGizmoTargets();
-                }
-                return;
-            }
-
-            // 픽킹된 객체가 StageObject인지 확인
-            var stageObject = FindStageObjectForGameObject(pickedObject);
-            if (stageObject != null)
-            {
-                if (addToSelection)
-                {
-                    // Ctrl+클릭: 토글 선택
-                    ToggleSelection(stageObject, true);
-                }
-                else
-                {
-                    // 일반 클릭: 단일 선택
-                    Select(stageObject, false);
-                }
-
-                // 기즈모 타겟 업데이트
-                UpdateGizmoTargets();
-            }
-        }
-
-        /// <summary>
-        /// GameObject로부터 해당하는 StageObject를 찾습니다.
-        /// </summary>
-        /// <param name="gameObject">검색할 GameObject</param>
-        /// <returns>찾은 StageObject, 없으면 null</returns>
-        private StageObjectManager.StageObject? FindStageObjectForGameObject(GameObject gameObject)
-        {
-            if (gameObject == null) return null;
-
-            // StageObjectManager의 GetByGameObject 사용
-            var stageObject = _stageObjectManager.GetByGameObject(gameObject);
-            if (stageObject != null)
-            {
-                return stageObject;
-            }
-
-            // 부모 계층에서 StageObject 검색
-            Transform? current = gameObject.transform.parent;
-            while (current != null)
-            {
-                stageObject = _stageObjectManager.GetByGameObject(current.gameObject);
-                if (stageObject != null)
-                {
-                    return stageObject;
-                }
-                current = current.parent;
-            }
-
-            return null;
-        }
-
         /// <summary>
         /// 선택된 모든 객체를 기즈모 타겟으로 설정합니다.
         /// </summary>
@@ -987,34 +913,36 @@ namespace UVC.Studio.Manager
         {
             if (!_gizmosInitialized) return;
 
-            // 선택된 객체들의 GameObject 리스트 생성
-            var targetObjects = new List<GameObject>();
+            Debug.Log($"[SelectionManager] _currentToolType:{_currentToolType} _selectedObjects.Count:{_selectedObjects.Count}");
+
+            // 캐시된 리스트 재사용
+            _gizmoTargetObjects.Clear();
             foreach (var stageObject in _selectedObjects)
             {
                 if (stageObject.GameObject != null)
                 {
-                    targetObjects.Add(stageObject.GameObject);
+                    _gizmoTargetObjects.Add(stageObject.GameObject);
                 }
             }
 
             // 모든 기즈모에 타겟 설정
             if (_moveGizmo != null)
             {
-                _moveGizmo.objectTransformGizmo.SetTargets(targetObjects);
+                _moveGizmo.objectTransformGizmo.SetTargets(_gizmoTargetObjects);
             }
             if (_rotateGizmo != null)
             {
-                _rotateGizmo.objectTransformGizmo.SetTargets(targetObjects);
+                _rotateGizmo.objectTransformGizmo.SetTargets(_gizmoTargetObjects);
             }
             if (_scaleGizmo != null)
             {
-                _scaleGizmo.objectTransformGizmo.SetTargets(targetObjects);
+                _scaleGizmo.objectTransformGizmo.SetTargets(_gizmoTargetObjects);
             }
 
             // 현재 활성 기즈모 새로고침
             RefreshActiveGizmo();
 
-            Debug.Log($"[SelectionManager] 기즈모 타겟 업데이트: {targetObjects.Count}개 객체");
+            Debug.Log($"[SelectionManager] 기즈모 타겟 업데이트: {_gizmoTargetObjects.Count}개 객체");
         }
 
         /// <summary>
@@ -1029,6 +957,8 @@ namespace UVC.Studio.Manager
                 return;
             }
 
+            Debug.Log($"[SelectionManager] SetActiveTool called: {toolType}");
+
             _currentToolType = toolType;
 
             // 모든 기즈모 비활성화
@@ -1036,6 +966,12 @@ namespace UVC.Studio.Manager
             if (_rotateGizmo != null) _rotateGizmo.enabled = false;
             if (_scaleGizmo != null) _scaleGizmo.enabled = false;
 
+            if(_selectedObjects.Count == 0)
+            {
+                Debug.Log("[SelectionManager] No selected objects. Gizmos will remain disabled.");
+                return;
+            }
+
             // 선택된 도구에 해당하는 기즈모 활성화
             switch (toolType)
             {
@@ -1075,21 +1011,43 @@ namespace UVC.Studio.Manager
 
         /// <summary>
         /// 현재 활성화된 기즈모를 새로고침합니다.
+        /// 선택된 객체가 없으면 기즈모를 비활성화합니다.
         /// </summary>
         public void RefreshActiveGizmo()
         {
             if (!_gizmosInitialized) return;
 
+            // 선택된 객체가 없으면 모든 기즈모 비활성화
+            if (_selectedObjects.Count == 0)
+            {
+                if (_moveGizmo != null) _moveGizmo.enabled = false;
+                if (_rotateGizmo != null) _rotateGizmo.enabled = false;
+                if (_scaleGizmo != null) _scaleGizmo.enabled = false;
+                return;
+            }
+
             switch (_currentToolType)
             {
                 case TransformToolType.Move:
-                    _moveGizmo?.objectTransformGizmo.Refresh();
+                    if (_moveGizmo != null)
+                    {
+                        _moveGizmo.enabled = true;
+                        _moveGizmo.objectTransformGizmo.Refresh();
+                    }
                     break;
                 case TransformToolType.Rotate:
-                    _rotateGizmo?.objectTransformGizmo.Refresh();
+                    if (_rotateGizmo != null)
+                    {
+                        _rotateGizmo.enabled = true;
+                        _rotateGizmo.objectTransformGizmo.Refresh();
+                    }
                     break;
                 case TransformToolType.Scale:
-                    _scaleGizmo?.objectTransformGizmo.Refresh();
+                    if (_scaleGizmo != null)
+                    {
+                        _scaleGizmo.enabled = true;
+                        _scaleGizmo.objectTransformGizmo.Refresh();
+                    }
                     break;
             }
         }
diff --git a/Assets/Scripts/Studio/StudioSceneMain.cs b/Assets/Scripts/Studio/StudioSceneMain.cs
index 2f4a35fa..163e73d3 100644
--- a/Assets/Scripts/Studio/StudioSceneMain.cs
+++ b/Assets/Scripts/Studio/StudioSceneMain.cs
@@ -91,26 +91,6 @@ namespace UVC.Studio
             UILoading.Hide();
         }
 
-        private void Update()
-        {
-            // 마우스 왼쪽 버튼 클릭 시 객체 선택 처리
-            if (UnityEngine.Input.GetMouseButtonDown(0))
-            {
-                // UI 위에서 클릭한 경우 무시
-                if (UnityEngine.EventSystems.EventSystem.current != null &&
-                    UnityEngine.EventSystems.EventSystem.current.IsPointerOverGameObject())
-                {
-                    return;
-                }
-
-                // Ctrl 키가 눌려있으면 다중 선택
-                bool addToSelection = UnityEngine.Input.GetKey(KeyCode.LeftControl) ||
-                                      UnityEngine.Input.GetKey(KeyCode.RightControl);
-
-                selectionManager?.HandleMouseSelection(addToSelection);
-            }
-        }
-
         private void SetupTopMenu()
         {
             if (topMenu == null)
@@ -308,11 +288,13 @@ namespace UVC.Studio
             shortcutManager.RegisterToolShortcut("snap", () =>
             {
                 Debug.Log("[Shortcut] Snap Tool 토글");
+                if( toolBox != null) toolBox.SetToggleButtonState("button_snap", !toolBox.GetToggleButtonState("button_snap"));
             });
 
             shortcutManager.RegisterToolShortcut("guide", () =>
             {
                 Debug.Log("[Shortcut] Guide Tool 토글");
+                if( toolBox != null) toolBox.SetToggleButtonState("button_guide", !toolBox.GetToggleButtonState("button_guide"));
             });
 
             shortcutManager.RegisterToolShortcut("node", () =>
@@ -347,7 +329,7 @@ namespace UVC.Studio
                 "Studio/Images/toolbar_icon_save_off_40",
                 onToggle: (isSelected) => Debug.Log($"화면 녹화 상태: {(isSelected ? "녹화 중" : "중지")} (OnToggle 콜백)"),
                 command: new DebugLogCommand("저장 버튼 클릭됨 (Command 실행)"),
-                tooltip:"tooltip_save");
+                tooltip: "tooltip_save");
 
             // undo
             toolbarModel.AddStandardButton("button_undo",
@@ -368,7 +350,11 @@ namespace UVC.Studio
                 "Studio/Images/toolbar_icon_select_on_40",
                 "Studio/Images/toolbar_icon_select_off_40",
                 onToggle: (isSelected) => { if (isSelected) Debug.Log("Selection Tool 선택됨"); },
-                command: new ActionCommand(() => Debug.Log("Selection Tool Command 실행")),
+                command: new ActionCommand(() =>
+                {
+                    Debug.Log("Selection Tool Command 실행");
+                    if (selectionManager != null) selectionManager.SetActiveTool(TransformToolType.Select);
+                }),
                 "tooltip_selection_tool");
 
 
@@ -377,7 +363,11 @@ namespace UVC.Studio
                 "Studio/Images/toolbar_icon_move_on_40",
                 "Studio/Images/toolbar_icon_move_off_40",
                 onToggle: (isSelected) => { if (isSelected) Debug.Log("Movement Tool 선택됨"); },
-                command: new ActionCommand(() => Debug.Log("Movement Tool Command 실행")),
+                command: new ActionCommand(() => 
+                {
+                    Debug.Log("Movement Tool Command 실행");
+                    if (selectionManager != null) selectionManager.SetActiveTool(TransformToolType.Move);
+                }),
                 "tooltip_movement_tool");
 
             // rotate
@@ -385,7 +375,11 @@ namespace UVC.Studio
                 "Studio/Images/toolbar_icon_rotate_on_40",
                 "Studio/Images/toolbar_icon_rotate_off_40",
                 onToggle: (isSelected) => { if (isSelected) Debug.Log("Rotation Tool 선택됨"); },
-                command: new ActionCommand(() => Debug.Log("Rotation Tool Command 실행")),
+                command: new ActionCommand(() =>
+                {
+                    Debug.Log("Rotation Tool Command 실행");
+                    if (selectionManager != null) selectionManager.SetActiveTool(TransformToolType.Rotate);
+                }),
                 "tooltip_rotation_tool");
 
             //scale
@@ -393,7 +387,11 @@ namespace UVC.Studio
                 "Studio/Images/toolbar_icon_scale_on_40",
                 "Studio/Images/toolbar_icon_scale_off_40",
                 onToggle: (isSelected) => { if (isSelected) Debug.Log("Scale Tool 선택됨"); },
-                command: new ActionCommand(() => Debug.Log("Scale Tool Command 실행")),
+                command: new ActionCommand(() =>
+                {
+                    Debug.Log("Scale Tool Command 실행");
+                    if (selectionManager != null) selectionManager.SetActiveTool(TransformToolType.Scale);
+                }),
                 "tooltip_scale_tool");
 
             toolbarModel.AddSeparator();
@@ -405,10 +403,11 @@ namespace UVC.Studio
                 tooltip: "tooltip_duplicate");
 
             //align
-            var alignBtnModel = new ToolbarExpandableButton { 
-                Text = "button_align", 
-                IconSpritePath = "Studio/Images/toolbar_icon_align_40", 
-                ClickCommand = new ActionCommand(() => Debug.Log("align 주 버튼 클릭됨 (Command)")), 
+            var alignBtnModel = new ToolbarExpandableButton
+            {
+                Text = "button_align",
+                IconSpritePath = "Studio/Images/toolbar_icon_align_40",
+                ClickCommand = new ActionCommand(() => Debug.Log("align 주 버튼 클릭됨 (Command)")),
                 Tooltip = "tooltip_align",
                 UpdateIconOnSelection = false,
                 OnSubButtonSelected = (selectedSubButtonModel) =>
@@ -418,7 +417,7 @@ namespace UVC.Studio
                     Debug.Log($"정렬 옵션 '{localizedSubButtonText}' 선택됨 (OnSubButtonSelected 콜백). 주 버튼 업데이트 로직 실행 가능.");
                 }
             };
-            
+
 
             // 확장 버튼 모델에 하위 버튼 추가
             alignBtnModel.SubButtons.Add(new ToolbarStandardButton
@@ -535,15 +534,15 @@ namespace UVC.Studio
             toolBox.OnAction += (itemModel) =>
             {
                 Debug.Log($"툴박스 아이템 '{itemModel.Text}' 실행됨 (OnAction 콜백). 추가 동작 로직 실행 가능.");
-                if(itemModel.ActionType == ToolbarActionType.Radio)
+                if (itemModel.ActionType == ToolbarActionType.Radio)
                 {
-                    if(itemModel.Text == "SizeControlGroup")
+                    if (itemModel.Text == "SizeControlGroup")
                     {
                         // 선택, 이동, 회전, 크기 조절 툴 관련 동작 처리
                         toolBox.ClearRadioButtonSelection("NodeControlGroup");
                         CursorManager.Instance.SetDefaultCursor();
                     }
-                    else if(itemModel.Text == "NodeControlGroup")
+                    else if (itemModel.Text == "NodeControlGroup")
                     {
                         // 노드, 링크, 아크 툴 관련 동작 처리
                         toolBox.ClearRadioButtonSelection("SizeControlGroup");
diff --git a/Assets/Scripts/UVC/UI/ToolBar/Model/ToolbarModel.cs b/Assets/Scripts/UVC/UI/ToolBar/Model/ToolbarModel.cs
index f3a9952d..9f7abf5c 100644
--- a/Assets/Scripts/UVC/UI/ToolBar/Model/ToolbarModel.cs
+++ b/Assets/Scripts/UVC/UI/ToolBar/Model/ToolbarModel.cs
@@ -339,6 +339,23 @@ namespace UVC.UI.Toolbar.Model
             return null;
         }
 
+        /// <summary>
+        /// 텍스트로 토글 버튼을 찾아 반환합니다.
+        /// </summary>
+        /// <param name="buttonText">찾을 토글 버튼의 텍스트입니다.</param>
+        /// <returns>찾은 토글 버튼입니다. 찾지 못하면 null을 반환합니다.</returns>
+        public ToolbarToggleButton? GetToggleButtonByText(string buttonText)
+        {
+            foreach (var item in Items)
+            {
+                if (item is ToolbarToggleButton toggleButton && toggleButton.Text == buttonText)
+                {
+                    return toggleButton;
+                }
+            }
+            return null;
+        }
+
         // 만약 모든 라디오 버튼 그룹의 초기 선택 상태를 한 번에 설정하고 싶다면 다음과 같은 메서드를 추가할 수 있습니다.
         // /// <summary>
         // /// 모든 라디오 버튼 그룹에 대해 초기 선택 상태를 설정합니다.
diff --git a/Assets/Scripts/UVC/UI/ToolBar/Toolbox.cs b/Assets/Scripts/UVC/UI/ToolBar/Toolbox.cs
index 46b73e47..f77318a5 100644
--- a/Assets/Scripts/UVC/UI/ToolBar/Toolbox.cs
+++ b/Assets/Scripts/UVC/UI/ToolBar/Toolbox.cs
@@ -446,6 +446,22 @@ namespace UVC.UI.ToolBar
             return button != null;
         }
 
+        /// <summary>
+        /// 특정 토글 버튼의 현재 선택 상태를 가져옵니다.
+        /// </summary>
+        /// <param name="buttonText">상태를 확인할 토글 버튼의 텍스트입니다.</param>
+        /// <returns>토글 버튼의 선택 상태입니다. 버튼을 찾지 못하면 false를 반환합니다.</returns>
+        public bool GetToggleButtonState(string buttonText)
+        {
+            if (model == null)
+            {
+                Debug.LogError("Toolbox: ToolbarModel이 설정되지 않았습니다.");
+                return false;
+            }
+            var button = model.GetToggleButtonByText(buttonText);
+            return button?.IsSelected ?? false;
+        }
+
         protected void OnDestroy()
         {
             model = null;
diff --git a/Assets/StreamingAssets/Settings.json b/Assets/StreamingAssets/Settings.json
deleted file mode 100644
index 231ae459..00000000
--- a/Assets/StreamingAssets/Settings.json
+++ /dev/null
@@ -1,109 +0,0 @@
-{
-  "database": {
-    "ip": "127.0.0.3",
-    "port": 3304,
-    "id": "admin3",
-    "password": "password23"
-  },
-  "general": {
-    "autoSaveInterval": 5,
-    "gridSize": 1.0,
-    "snapPosition": 0.5,
-    "snapRotation": 10.0,
-    "snapScale": 0.5
-  },
-  "shortcuts": {
-    "menu": {
-      "newProject": {
-        "key": "CTRL+Q",
-        "label": "File > New Project"
-      },
-      "openProject": {
-        "key": "CTRL+O",
-        "label": "File > Open Project"
-      },
-      "saveProject": {
-        "key": "CTRL+S",
-        "label": "File > Save Project"
-      },
-      "saveAsProject": {
-        "key": "CTRL+SHIFT+S",
-        "label": "File > Save As..."
-      },
-      "insertDb": {
-        "key": "CTRL+I",
-        "label": "File > Insert Database"
-      },
-      "exportLayout": {
-        "key": "CTRL+L",
-        "label": "File > Export > Layout"
-      },
-      "exportMeta": {
-        "key": "CTRL+M",
-        "label": "File > Export > Metadata"
-      },
-      "exportGltf": {
-        "key": "CTRL+G",
-        "label": "File > Export > glTF"
-      },
-      "undo": {
-        "key": "CTRL+Z",
-        "label": "Edit > Undo"
-      },
-      "redo": {
-        "key": "CTRL+SHIFT+Z",
-        "label": "Edit > Redo"
-      },
-      "duplicate": {
-        "key": "CTRL+D",
-        "label": "Edit > Duplicate"
-      },
-      "delete": {
-        "key": "DELETE",
-        "label": "Edit > Delete"
-      },
-      "createPlane": {
-        "key": "CTRL+P",
-        "label": "Create > Plane"
-      }
-    },
-    "tools": {
-      "select": {
-        "key": "Q",
-        "label": "Select Tool"
-      },
-      "move": {
-        "key": "W",
-        "label": "Move Tool"
-      },
-      "rotate": {
-        "key": "E",
-        "label": "Rotate Tool"
-      },
-      "scale": {
-        "key": "R",
-        "label": "Scale Tool"
-      },
-      "snap": {
-        "key": "S",
-        "label": "Snap Tool"
-      },
-      "guide": {
-        "key": "G",
-        "label": "Guide Tool"
-      },
-      "node": {
-        "key": "N",
-        "label": "Node Tool"
-      },
-      "link": {
-        "key": "L",
-        "label": "Link Tool"
-      },
-      "arc": {
-        "key": "A",
-        "label": "Arc Tool"
-      }
-    }
-  }
-}
\ No newline at end of file
diff --git a/Assets/StreamingAssets/Settings.json.meta b/Assets/StreamingAssets/Settings.json.meta
deleted file mode 100644
index c178fc96..00000000
--- a/Assets/StreamingAssets/Settings.json.meta
+++ /dev/null
@@ -1,7 +0,0 @@
-fileFormatVersion: 2
-guid: aaa7a4111e1871149b16d60c63074d5a
-DefaultImporter:
-  externalObjects: {}
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: 
diff --git a/Assets/StreamingAssets/Studio/Settings.json b/Assets/StreamingAssets/Studio/Settings.json
index 0e050b34..1340c52f 100644
--- a/Assets/StreamingAssets/Studio/Settings.json
+++ b/Assets/StreamingAssets/Studio/Settings.json
@@ -85,23 +85,23 @@
         "label": "Scale Tool"
       },
       "snap": {
-        "key": "S",
+        "key": "T",
         "label": "Snap Tool"
       },
       "guide": {
-        "key": "G",
+        "key": "Y",
         "label": "Guide Tool"
       },
       "node": {
-        "key": "N",
+        "key": "U",
         "label": "Node Tool"
       },
       "link": {
-        "key": "L",
+        "key": "I",
         "label": "Link Tool"
       },
       "arc": {
-        "key": "A",
+        "key": "O",
         "label": "Arc Tool"
       }
     }