diff --git a/Assets/VRM10/Runtime/Migration/MigrationVrm.cs b/Assets/VRM10/Runtime/Migration/MigrationVrm.cs
index e431f0f6a..a86a0c8ae 100644
--- a/Assets/VRM10/Runtime/Migration/MigrationVrm.cs
+++ b/Assets/VRM10/Runtime/Migration/MigrationVrm.cs
@@ -16,6 +16,9 @@ namespace UniVRM10
             var json = glb.Json.Bytes.ParseAsJson();
             var gltf = UniGLTF.GltfDeserializer.Deserialize(json);
 
+            // https://github.com/vrm-c/vrm-specification/issues/205
+            SceneRotator.Rotate(gltf);
+
             var extensions = new UniGLTF.glTFExtensionExport();
             {
                 var vrm0 = json["extensions"]["VRM"];
@@ -26,6 +29,8 @@ namespace UniVRM10
                     vrm1.Meta = MigrationVrmMeta.Migrate(vrm0["meta"]);
                     vrm1.Humanoid = MigrationVrmHumanoid.Migrate(vrm0["humanoid"]);
                     vrm1.Expressions = MigrationVrmExpression.Migrate(gltf, vrm0["blendShapeMaster"]).ToList();
+                    // lookat
+                    // firstperson
 
                     var f = new JsonFormatter();
                     UniGLTF.Extensions.VRMC_vrm.GltfSerializer.Serialize(f, vrm1);
diff --git a/Assets/VRM10/Runtime/Migration/SceneRotator.cs b/Assets/VRM10/Runtime/Migration/SceneRotator.cs
new file mode 100644
index 000000000..46acf133c
--- /dev/null
+++ b/Assets/VRM10/Runtime/Migration/SceneRotator.cs
@@ -0,0 +1,14 @@
+namespace UniVRM10
+{
+    public static class SceneRotator
+    {
+        /// <summary>
+        /// シーンをY軸で180度回転する
+        /// </summary>
+        /// <param name="gltf"></param>
+        public static void Rotate(UniGLTF.glTF gltf)
+        {
+
+        }
+    }
+}
diff --git a/Assets/VRM10/Runtime/Migration/SceneRotator.cs.meta b/Assets/VRM10/Runtime/Migration/SceneRotator.cs.meta
new file mode 100644
index 000000000..1faf0b6c2
--- /dev/null
+++ b/Assets/VRM10/Runtime/Migration/SceneRotator.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: c20dfda77d1e2db4997ba27593ade0c4
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: