diff --git a/Assets/VRM10/Editor/Components/Expression/ExpressionSelector.cs b/Assets/VRM10/Editor/Components/Expression/ExpressionSelector.cs
deleted file mode 100644
index 6c32d7ba3..000000000
--- a/Assets/VRM10/Editor/Components/Expression/ExpressionSelector.cs
+++ /dev/null
@@ -1,148 +0,0 @@
-using System;
-using System.Linq;
-using UnityEngine;
-using UnityEditor;
-using System.IO;
-
-namespace UniVRM10
-{
-    /// <summary>
-    /// ExpressionAvatarEditorの部品
-    /// </summary>
-    class ExpressionClipSelector
-    {
-        VRM10ObjectExpression m_avatar;
-
-        int m_mode;
-        static readonly string[] MODES = new string[]{
-            "Button",
-            "List"
-        };
-
-        ReorderableExpressionList m_clipList;
-
-        public VRM10Expression GetSelected()
-        {
-            var clips = m_avatar.Clips.ToArray();
-            if (m_avatar == null || clips == null || clips.Length == 0)
-            {
-                return null;
-            }
-            if (m_selectedIndex < 0 || m_selectedIndex >= clips.Length)
-            {
-                return null;
-            }
-            return clips[m_selectedIndex];
-        }
-
-        public event Action<VRM10Expression> Selected;
-        void RaiseSelected(int index)
-        {
-            m_clipList.Select(index);
-            var clip = GetSelected();
-            var handle = Selected;
-            if (handle == null)
-            {
-                return;
-            }
-            handle(clip);
-        }
-
-        int m_selectedIndex;
-        int SelectedIndex
-        {
-            get { return m_selectedIndex; }
-            set
-            {
-                // これで更新するべし
-                if (m_selectedIndex == value) return;
-                m_selectedIndex = value;
-                RaiseSelected(value);
-            }
-        }
-
-        public ExpressionClipSelector(VRM10ObjectExpression avatar, string dir, SerializedObject serializedObject)
-        {
-            avatar.RemoveNullClip();
-
-            m_avatar = avatar;
-
-            var prop = serializedObject.FindProperty("Clips");
-            m_clipList = new ReorderableExpressionList(serializedObject, prop, dir);
-
-            m_clipList.Selected += (selected) =>
-            {
-                var clips = avatar.Clips.ToArray();
-                SelectedIndex = Array.IndexOf(clips, selected);
-            };
-        }
-
-        public void DrawGUI(string dir)
-        {
-            var backup = GUI.enabled;
-            try
-            {
-                GUI.enabled = true;
-                EditorGUILayout.Space();
-                EditorGUILayout.LabelField("Select Expression", EditorStyles.boldLabel);
-
-                m_mode = GUILayout.Toolbar(m_mode, MODES);
-                switch (m_mode)
-                {
-                    case 0:
-                        SelectGUI(dir);
-                        break;
-
-                    case 1:
-                        m_clipList.GUI();
-                        break;
-
-                    default:
-                        throw new NotImplementedException();
-                }
-            }
-            finally
-            {
-                GUI.enabled = backup;
-            }
-        }
-
-        void SelectGUI(string dir)
-        {
-            if (m_avatar != null && m_avatar.Clips != null)
-            {
-                var array = m_avatar.Clips
-                    .Select(x => x != null
-                        ? ExpressionKey.CreateFromClip(x).ToString()
-                        : "null"
-                        ).ToArray();
-                SelectedIndex = GUILayout.SelectionGrid(SelectedIndex, array, 4);
-            }
-
-            // if (GUILayout.Button("Add Expression"))
-            // {
-            //     var path = EditorUtility.SaveFilePanel(
-            //                    "Create Expression",
-            //                    dir,
-            //                    string.Format("Expression#{0}.asset", m_avatar.Clips.Count),
-            //                    "asset");
-            //     if (!string.IsNullOrEmpty(path))
-            //     {
-            //         var clip = ExpressionEditorBase.CreateExpression(path.ToUnityRelativePath());
-            //         //clip.Prefab = AssetDatabase.LoadAssetAtPath<GameObject>(AssetDatabase.GetAssetPath(target));
-
-            //         m_avatar.Clips.Add(clip);
-            //     }
-            // }
-        }
-
-        public void DuplicateWarn()
-        {
-            var key = ExpressionKey.CreateFromClip(GetSelected());
-            if (m_avatar.Clips.Where(x => key.Match(x)).Count() > 1)
-            {
-                EditorGUILayout.HelpBox("duplicate clip: " + key, MessageType.Error);
-            }
-        }
-    }
-}
diff --git a/Assets/VRM10/Editor/Components/Expression/ExpressionSelector.cs.meta b/Assets/VRM10/Editor/Components/Expression/ExpressionSelector.cs.meta
deleted file mode 100644
index d6d2bac84..000000000
--- a/Assets/VRM10/Editor/Components/Expression/ExpressionSelector.cs.meta
+++ /dev/null
@@ -1,11 +0,0 @@
-fileFormatVersion: 2
-guid: 6d4d5da207577eb48ad767ff59bcf8b4
-MonoImporter:
-  externalObjects: {}
-  serializedVersion: 2
-  defaultReferences: []
-  executionOrder: 0
-  icon: {instanceID: 0}
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: 
diff --git a/Assets/VRM10/Editor/Components/Expression/ReorderableExpressionList.cs b/Assets/VRM10/Editor/Components/Expression/ReorderableExpressionList.cs
deleted file mode 100644
index cd69a46c3..000000000
--- a/Assets/VRM10/Editor/Components/Expression/ReorderableExpressionList.cs
+++ /dev/null
@@ -1,84 +0,0 @@
-using System;
-using System.IO;
-using UnityEditor;
-using UnityEditorInternal;
-using UnityEngine;
-
-namespace UniVRM10
-{
-    class ReorderableExpressionList
-    {
-        ReorderableList m_list;
-
-        public event Action<VRM10Expression> Selected;
-        void RaiseSelected(VRM10Expression selected)
-        {
-            var handler = Selected;
-            if (handler == null)
-            {
-                return;
-            }
-            handler(selected);
-        }
-
-        public void Select(int index)
-        {
-            m_list.index = index;
-        }
-
-        public ReorderableExpressionList(SerializedObject serializedObject, SerializedProperty prop, string dir)
-        {
-            m_list = new ReorderableList(serializedObject, prop);
-
-            m_list.drawHeaderCallback = (rect) =>
-                                 EditorGUI.LabelField(rect, "Expressions");
-
-            m_list.drawElementCallback = (rect, index, isActive, isFocused) =>
-            {
-                var element = prop.GetArrayElementAtIndex(index);
-                rect.height -= 4;
-                rect.y += 2;
-                EditorGUI.PropertyField(rect, element);
-            };
-
-            m_list.onAddCallback += (list) =>
-            {
-                // Add slot
-                prop.arraySize++;
-                // select last item
-                list.index = prop.arraySize - 1;
-                // get last item
-                var element = prop.GetArrayElementAtIndex(list.index);
-                element.objectReferenceValue = null;
-
-                // var dir = Path.GetDirectoryName(AssetDatabase.GetAssetPath(target));
-                var path = EditorUtility.SaveFilePanel(
-                               "Create Expression",
-                               dir,
-                               string.Format("Expression#{0}.asset", list.count),
-                               "asset");
-                if (!string.IsNullOrEmpty(path))
-                {
-                    var clip = ExpressionEditorBase.CreateExpression(path.ToUnityRelativePath());
-                    //clip.Prefab = AssetDatabase.LoadAssetAtPath<GameObject>(AssetDatabase.GetAssetPath(target));
-
-                    element.objectReferenceValue = clip;
-                }
-            };
-
-            m_list.onSelectCallback += (list) =>
-            {
-                var a = list.serializedProperty;
-                var selected = a.GetArrayElementAtIndex(list.index);
-                RaiseSelected((VRM10Expression)selected.objectReferenceValue);
-            };
-
-            //m_clipList.onCanRemoveCallback += list => true;
-        }
-
-        public void GUI()
-        {
-            m_list.DoLayoutList();
-        }
-    }
-}
diff --git a/Assets/VRM10/Editor/Components/Expression/ReorderableExpressionList.cs.meta b/Assets/VRM10/Editor/Components/Expression/ReorderableExpressionList.cs.meta
deleted file mode 100644
index 55b093fb4..000000000
--- a/Assets/VRM10/Editor/Components/Expression/ReorderableExpressionList.cs.meta
+++ /dev/null
@@ -1,11 +0,0 @@
-fileFormatVersion: 2
-guid: a5a5707cea4226d40af879c4c9778002
-MonoImporter:
-  externalObjects: {}
-  serializedVersion: 2
-  defaultReferences: []
-  executionOrder: 0
-  icon: {instanceID: 0}
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: