diff --git a/Assets/VRM10/Editor/Components/VRM10Window.cs b/Assets/VRM10/Editor/Components/VRM10Window.cs
index 331db7550..ad2125531 100644
--- a/Assets/VRM10/Editor/Components/VRM10Window.cs
+++ b/Assets/VRM10/Editor/Components/VRM10Window.cs
@@ -10,13 +10,15 @@ namespace UniVRM10
     /// </summary>
     public class VRM10Window : EditorWindow
     {
-        const string WINDOW_TITLE = "VRM1 Window";
-        public static void Open()
+        public const string WINDOW_TITLE = "VRM1.0 Model Editor";
+
+        public static VRM10Window Open()
         {
             var window = (VRM10Window)GetWindow(typeof(VRM10Window));
             window.titleContent = new GUIContent(WINDOW_TITLE);
             window.Show();
             window.Root = UnityEditor.Selection.activeTransform?.GetComponent<Vrm10Instance>();
+            return window;
         }
 
         void OnEnable()
diff --git a/Assets/VRM10/Editor/Vrm10InstanceEditor.cs b/Assets/VRM10/Editor/Vrm10InstanceEditor.cs
index 878bbf029..26b2ac7bd 100644
--- a/Assets/VRM10/Editor/Vrm10InstanceEditor.cs
+++ b/Assets/VRM10/Editor/Vrm10InstanceEditor.cs
@@ -115,14 +115,8 @@ namespace UniVRM10
             return loaded;
         }
 
-        void Setup(Vrm10Instance instance)
+        void SetupVRM10Object(Vrm10Instance instance)
         {
-            if (instance.Vrm != null)
-            {
-                // OK
-                return;
-            }
-
             if (!CheckHumanoid(instance.gameObject))
             {
                 // can not
@@ -162,9 +156,22 @@ namespace UniVRM10
 
         public override void OnInspectorGUI()
         {
+
             if (target is Vrm10Instance instance)
             {
-                Setup(instance);
+                if (instance.Vrm == null)
+                {
+                    SetupVRM10Object(instance);
+                }
+
+                if (instance.Vrm != null)
+                {
+                    EditorGUILayout.HelpBox("SpringBone utility", MessageType.Info);
+                    if (GUILayout.Button("Open " + VRM10Window.WINDOW_TITLE))
+                    {
+                        VRM10Window.Open();
+                    }
+                }
             }
 
             base.OnInspectorGUI();