diff --git a/Scripts/BlendShape/AIUEO.cs b/Scripts/BlendShape/AIUEO.cs
deleted file mode 100644
index 02e1734f0..000000000
--- a/Scripts/BlendShape/AIUEO.cs
+++ /dev/null
@@ -1,73 +0,0 @@
-using System.Collections;
-using UnityEngine;
-
-
-namespace VRM
-{
-    public class AIUEO : MonoBehaviour
-    {
-        [SerializeField]
-        public VRMBlendShapeProxy BlendShapes;
-        private void Reset()
-        {
-            BlendShapes = GetComponent<VRMBlendShapeProxy>();
-        }
-
-        Coroutine m_coroutine;
-
-        [SerializeField]
-        float m_wait = 0.5f;
-
-        private void Awake()
-        {
-            if (BlendShapes == null) BlendShapes = GetComponent<VRM.VRMBlendShapeProxy>();
-            if (BlendShapes == null) return;
-            if (BlendShapes.BlendShapeAvatar == null) return;
-            var avatar = BlendShapes.BlendShapeAvatar;
-        }
-
-        IEnumerator RoutineNest(BlendShapePreset preset, float velocity, float wait)
-        {
-            for (var value = 0.0f; value <= 1.0f; value += velocity)
-            {
-                BlendShapes.SetValue(preset, value);
-                yield return null;
-            }
-            BlendShapes.SetValue(preset, 1.0f);
-            yield return new WaitForSeconds(wait);
-            for (var value = 1.0f; value >= 0; value -= velocity)
-            {
-                BlendShapes.SetValue(preset, value);
-                yield return null;
-            }
-            BlendShapes.SetValue(preset, 0);
-            yield return new WaitForSeconds(wait * 2);
-        }
-
-        IEnumerator Routine()
-        {
-            while (true)
-            {
-                yield return new WaitForSeconds(1.0f);
-
-                var velocity = 0.1f;
-
-                yield return RoutineNest(BlendShapePreset.A, velocity, m_wait);
-                yield return RoutineNest(BlendShapePreset.I, velocity, m_wait);
-                yield return RoutineNest(BlendShapePreset.U, velocity, m_wait);
-                yield return RoutineNest(BlendShapePreset.E, velocity, m_wait);
-                yield return RoutineNest(BlendShapePreset.O, velocity, m_wait);
-            }
-        }
-
-        private void OnEnable()
-        {
-            m_coroutine = StartCoroutine(Routine());
-        }
-
-        private void OnDisable()
-        {
-            StopCoroutine(m_coroutine);
-        }
-    }
-}
diff --git a/Scripts/BlendShape/AIUEO.cs.meta b/Scripts/BlendShape/AIUEO.cs.meta
deleted file mode 100644
index d245454c5..000000000
--- a/Scripts/BlendShape/AIUEO.cs.meta
+++ /dev/null
@@ -1,13 +0,0 @@
-fileFormatVersion: 2
-guid: b62ca4f3096cada41938f18e4a02d8dc
-timeCreated: 1517463794
-licenseType: Free
-MonoImporter:
-  externalObjects: {}
-  serializedVersion: 2
-  defaultReferences: []
-  executionOrder: 0
-  icon: {instanceID: 0}
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: