diff --git a/Assets/VRM10_Samples/VRM10Viewer/UI/ArgumentChecker.cs b/Assets/VRM10_Samples/VRM10Viewer/UI/ArgumentChecker.cs
new file mode 100644
index 000000000..7d533e5ab
--- /dev/null
+++ b/Assets/VRM10_Samples/VRM10Viewer/UI/ArgumentChecker.cs
@@ -0,0 +1,62 @@
+using System.IO;
+using System.Linq;
+using UnityEngine;
+
+
+namespace UniVRM10.VRM10Viewer
+{
+    static class ArgumentChecker
+    {
+        static string[] Supported = {
+                ".gltf",
+                ".glb",
+                ".vrm",
+                ".zip",
+            };
+
+        static string UnityHubPath => System.Environment.GetEnvironmentVariable("ProgramFiles") + "\\Unity\\Hub";
+
+        public static bool IsLoadable(string path)
+        {
+            if (!File.Exists(path))
+            {
+                // not exists
+                return false;
+            }
+
+            if (Application.isEditor)
+            {
+                // skip editor argument
+                // {UnityHub_Resources}\PackageManager\ProjectTemplates\com.unity.template.3d-5.0.4.tgz
+                if (path.StartsWith(UnityHubPath))
+                {
+                    return false;
+                }
+            }
+
+            var ext = Path.GetExtension(path).ToLower();
+            if (!Supported.Contains(ext))
+            {
+                // unknown extension
+                return false;
+            }
+
+            return true;
+        }
+
+        public static bool TryGetFirstLoadable(out string cmd)
+        {
+            foreach (var arg in System.Environment.GetCommandLineArgs())
+            {
+                if (ArgumentChecker.IsLoadable(arg))
+                {
+                    cmd = arg;
+                    return true;
+                }
+            }
+
+            cmd = default;
+            return false;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Assets/VRM10_Samples/VRM10Viewer/UI/ArgumentChecker.cs.meta b/Assets/VRM10_Samples/VRM10Viewer/UI/ArgumentChecker.cs.meta
new file mode 100644
index 000000000..dd05c1821
--- /dev/null
+++ b/Assets/VRM10_Samples/VRM10Viewer/UI/ArgumentChecker.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 052e1c03459c30244b72f1e02ddbf420
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/VRM10_Samples/VRM10Viewer/UI/MainView.uxml b/Assets/VRM10_Samples/VRM10Viewer/UI/MainView.uxml
index dbc9babe5..bd879d600 100644
--- a/Assets/VRM10_Samples/VRM10Viewer/UI/MainView.uxml
+++ b/Assets/VRM10_Samples/VRM10Viewer/UI/MainView.uxml
@@ -2,6 +2,18 @@
     <ui:VisualElement style="flex-grow: 1; flex-direction: row;">
         <ui:VisualElement name="left" style="flex-grow: 0; min-width: 200px; background-color: rgba(255, 255, 255, 0.35);">
             <ui:Button text="Open Model" parse-escape-sequences="true" display-tooltip-when-elided="true" name="OpenModel" />
+            <ui:Toggle label="Use Async" name="UseAsync" style="flex-direction: row-reverse;" />
+            <ui:Label tabindex="-1" text="SpringBone" parse-escape-sequences="true" display-tooltip-when-elided="true" style="-unity-font-style: bold;" />
+            <ui:Toggle label="Singelton" name="UseSpringboneSingleton" style="flex-direction: row-reverse;" />
+            <ui:Toggle label="Use CustomMToonMaterial" name="UseCustomMToonMaterial" style="flex-direction: row-reverse;" />
+            <ui:Toggle label="Use CustomPbrMaterial" name="UseCustomPbrMaterial" value="true" style="flex-direction: row-reverse;" />
+            <ui:Label tabindex="-1" text="Motion" parse-escape-sequences="true" display-tooltip-when-elided="true" style="-unity-font-style: bold;" />
+            <ui:Toggle label="T-Pose" name="UseTPose" style="flex-direction: row-reverse;" />
+            <ui:Slider label="ExternalX" high-value="10" name="SpringboneExternalX" />
+            <ui:Slider label="ExternalY" high-value="10" name="SpringboneExternalY" />
+            <ui:Slider label="ExternalZ" high-value="10" name="SpringboneExternalZ" />
+            <ui:Toggle label="Pause" name="UeSpringbonePause" />
+            <ui:Toggle label="Support Scaling" name="UseSpringboneScaling" />
         </ui:VisualElement>
         <ui:VisualElement name="right" style="flex-grow: 1;" />
     </ui:VisualElement>
diff --git a/Assets/VRM10_Samples/VRM10Viewer/UI/VRM10MainView.cs b/Assets/VRM10_Samples/VRM10Viewer/UI/VRM10MainView.cs
index 25a884a35..cd421a73c 100644
--- a/Assets/VRM10_Samples/VRM10Viewer/UI/VRM10MainView.cs
+++ b/Assets/VRM10_Samples/VRM10Viewer/UI/VRM10MainView.cs
@@ -1,12 +1,17 @@
-using System.Collections;
-using System.Collections.Generic;
+using UniGLTF;
+using UniGLTF.SpringBoneJobs.Blittables;
 using UnityEngine;
+using UnityEngine.Rendering;
+using UnityEngine.UIElements;
 
 
 namespace UniVRM10.VRM10Viewer
 {
     public class VRM10MainView : MonoBehaviour
     {
+        [SerializeField]
+        TextAsset m_motion;
+
         [Header("Material")]
         [SerializeField]
         Material m_pbrOpaqueMaterial = default;
@@ -18,18 +23,225 @@ namespace UniVRM10.VRM10Viewer
         Material m_mtoonMaterialAlphaBlend = default;
 
         VRM10ViewerController m_controller;
-
+        Toggle m_useAsync;
+        Toggle m_useSpringboneSingleton;
+        Toggle m_useCustomPbrMaterial;
+        Toggle m_useCustomMToonMaterial;
+        Toggle m_useTPose;
+        Slider m_springboneExternalX;
+        Slider m_springboneExternalY;
+        Slider m_springboneExternalZ;
+        Toggle m_useSpringbonePause;
+        Toggle m_useSpringboneScaling;
         void OnEnable()
         {
             m_controller = new VRM10ViewerController(
                 (m_mtoonMaterialOpaque != null && m_mtoonMaterialAlphaBlend != null) ? new TinyMToonrMaterialImporter(m_mtoonMaterialOpaque, m_mtoonMaterialAlphaBlend) : null,
                 (m_pbrOpaqueMaterial != null && m_pbrAlphaBlendMaterial != null) ? new TinyPbrMaterialImporter(m_pbrOpaqueMaterial, m_pbrAlphaBlendMaterial) : null
             );
+            // m_controller.OnUpdateMeta += UpdateMeta;
+            m_controller.OnLoaded += OnLoaded;
+
+            // The UXML is already instantiated by the UIDocument component
+            var uiDocument = GetComponent<UIDocument>();
+            var root = uiDocument.rootVisualElement;
+
+            var openModelButton = root.Q<Button>("OpenModel");
+            openModelButton.clicked += () =>
+            {
+                m_controller.OnOpenModelClicked(MakeLoadOptions());
+            };
+            m_useAsync = root.Q<Toggle>("UseAsync");
+            m_useSpringboneSingleton = root.Q<Toggle>("UseSpringboneSingleton");
+            m_useCustomPbrMaterial = root.Q<Toggle>("UseCustomPbrMaterial");
+            m_useCustomMToonMaterial = root.Q<Toggle>("UseCustomMToonMaterial");
+            // URP かつ WebGL で有効にする
+            m_useCustomMToonMaterial.value = Application.platform == RuntimePlatform.WebGLPlayer && GraphicsSettings.renderPipelineAsset != null;
+            m_useTPose = root.Q<Toggle>("UseTPose");
+            m_springboneExternalX = root.Q<Slider>("SpringboneExternalX");
+            m_springboneExternalY = root.Q<Slider>("SpringboneExternalY");
+            m_springboneExternalZ = root.Q<Slider>("SpringboneExternalZ");
+            m_useSpringbonePause = root.Q<Toggle>("UeSpringbonePause");
+            m_useSpringboneScaling = root.Q<Toggle>("UseSpringboneScaling");
+
+            // m_autoEmotion = gameObject.AddComponent<VRM10AutoExpression>();
+            // m_autoBlink = gameObject.AddComponent<VRM10Blinker>();
+            // m_autoLipsync = gameObject.AddComponent<VRM10AIUEO>();
+
+            // m_version.text = string.Format("VRM10ViewerUI {0}", PackageVersion.VERSION);
+
+            // m_openModel.onClick.AddListener(() => m_controller.OnOpenModelClicked(MakeLoadOptions()));
+            // m_openMotion.onClick.AddListener(m_controller.OnOpenMotionClicked);
+            // m_pastePose.onClick.AddListener(m_controller.OnPastePoseClicked);
+            // m_resetSpringBone.onClick.AddListener(m_controller.OnResetSpringBoneClicked);
+            // m_reconstructSpringBone.onClick.AddListener(m_controller.OnReconstructSpringBoneClicked);
+
+            // load initial bvh
+            if (m_motion != null)
+            {
+                m_controller.Motion = BvhMotion.LoadBvhFromText(m_motion.text);
+                if (GraphicsSettings.renderPipelineAsset != null
+                    && m_pbrAlphaBlendMaterial != null)
+                {
+                    m_controller.Motion.SetBoxManMaterial(Instantiate(m_pbrOpaqueMaterial));
+                }
+            }
+
+            if (ArgumentChecker.TryGetFirstLoadable(out var cmd))
+            {
+                var _ = m_controller.LoadModelPath(cmd, MakeLoadOptions());
+            }
+
+            // m_texts.Start();
         }
 
         void OnDisable()
         {
             m_controller.Dispose();
         }
+
+        private void Update()
+        {
+            if (Input.GetKeyDown(KeyCode.Tab))
+            {
+                // if (Root != null) Root.SetActive(!Root.activeSelf);
+            }
+
+            if (Input.GetKeyDown(KeyCode.Escape))
+            {
+                m_controller.Cancel();
+            }
+
+            // m_controller.ShowBoxMan(m_showBoxMan.isOn);
+            if (m_controller.TryUpdate(
+                m_useTPose.value,
+                new BlittableModelLevel
+                {
+                    ExternalForce = new Vector3(m_springboneExternalX.value, m_springboneExternalY.value, m_springboneExternalZ.value),
+                    StopSpringBoneWriteback = m_useSpringbonePause.value,
+                    SupportsScalingAtRuntime = m_useSpringboneScaling.value,
+                },
+                out var loaded
+            ))
+            {
+                // m_happy.ApplyRuntime(loaded.Instance.Vrm.Expression.Happy);
+                // m_angry.ApplyRuntime(loaded.Instance.Vrm.Expression.Angry);
+                // m_sad.ApplyRuntime(loaded.Instance.Vrm.Expression.Sad);
+                // m_relaxed.ApplyRuntime(loaded.Instance.Vrm.Expression.Relaxed);
+                // m_surprised.ApplyRuntime(loaded.Instance.Vrm.Expression.Surprised);
+                // m_lipAa.ApplyRuntime(loaded.Instance.Vrm.Expression.Aa);
+                // m_lipIh.ApplyRuntime(loaded.Instance.Vrm.Expression.Ih);
+                // m_lipOu.ApplyRuntime(loaded.Instance.Vrm.Expression.Ou);
+                // m_lipEe.ApplyRuntime(loaded.Instance.Vrm.Expression.Ee);
+                // m_lipOh.ApplyRuntime(loaded.Instance.Vrm.Expression.Oh);
+                // m_blink.ApplyRuntime(loaded.Instance.Vrm.Expression.Blink);
+
+                // var vrm = loaded.Instance;
+                // if (m_enableAutoExpression.isOn)
+                // {
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Happy, m_autoEmotion.Happy);
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Angry, m_autoEmotion.Angry);
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Sad, m_autoEmotion.Sad);
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Relaxed, m_autoEmotion.Relaxed);
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Surprised, m_autoEmotion.Surprised);
+                //     m_happy.m_expression.SetValueWithoutNotify(m_autoEmotion.Happy);
+                //     m_angry.m_expression.SetValueWithoutNotify(m_autoEmotion.Angry);
+                //     m_sad.m_expression.SetValueWithoutNotify(m_autoEmotion.Sad);
+                //     m_relaxed.m_expression.SetValueWithoutNotify(m_autoEmotion.Relaxed);
+                //     m_surprised.m_expression.SetValueWithoutNotify(m_autoEmotion.Surprised);
+                // }
+                // else
+                // {
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Happy, m_happy.m_expression.value);
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Angry, m_angry.m_expression.value);
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Sad, m_sad.m_expression.value);
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Relaxed, m_relaxed.m_expression.value);
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Surprised, m_surprised.m_expression.value);
+                // }
+
+                // if (m_enableLipSync.isOn)
+                // {
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Aa, m_autoLipsync.Aa);
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Ih, m_autoLipsync.Ih);
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Ou, m_autoLipsync.Ou);
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Ee, m_autoLipsync.Ee);
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Oh, m_autoLipsync.Oh);
+                //     m_lipAa.m_expression.SetValueWithoutNotify(m_autoLipsync.Aa);
+                //     m_lipIh.m_expression.SetValueWithoutNotify(m_autoLipsync.Ih);
+                //     m_lipOu.m_expression.SetValueWithoutNotify(m_autoLipsync.Ou);
+                //     m_lipEe.m_expression.SetValueWithoutNotify(m_autoLipsync.Ee);
+                //     m_lipOh.m_expression.SetValueWithoutNotify(m_autoLipsync.Oh);
+                // }
+                // else
+                // {
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Aa, m_lipAa.m_expression.value);
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Ih, m_lipIh.m_expression.value);
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Ou, m_lipOu.m_expression.value);
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Ee, m_lipEe.m_expression.value);
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Oh, m_lipOh.m_expression.value);
+                // }
+
+                // if (m_enableAutoBlink.isOn)
+                // {
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Blink, m_autoBlink.BlinkValue);
+                //     m_blink.m_expression.SetValueWithoutNotify(m_autoBlink.BlinkValue);
+                // }
+                // else
+                // {
+                //     vrm.Runtime.Expression.SetWeight(ExpressionKey.Blink, m_blink.m_expression.value);
+                // }
+
+                // if (m_useLookAtTarget.isOn)
+                // {
+                //     var (yaw, pitch) = vrm.Runtime.LookAt.CalculateYawPitchFromLookAtPosition(m_lookAtTarget.transform.position);
+                //     vrm.Runtime.LookAt.SetYawPitchManually(yaw, pitch);
+                //     m_yaw.value = yaw;
+                //     m_pitch.value = pitch;
+                // }
+                // else
+                // {
+                //     vrm.Runtime.LookAt.SetYawPitchManually(m_yaw.value, m_pitch.value);
+                // }
+
+                // if (vrm.TryGetBoneTransform(HumanBodyBones.Head, out var head))
+                // {
+                //     var initLocarlRotation = vrm.DefaultTransformStates[head].LocalRotation;
+                //     var r = head.rotation * Quaternion.Inverse(initLocarlRotation);
+                //     var pos = head.position
+                //         + (r * Vector3.forward * 0.7f)
+                //         + (r * Vector3.up * 0.07f)
+                //         ;
+                //     m_faceCamera.position = pos;
+                //     m_faceCamera.rotation = r;
+                // }
+            }
+        }
+
+        LoadOptions MakeLoadOptions()
+        {
+            return new LoadOptions()
+            {
+                UseAsync = m_useAsync.value,
+                UseSpringboneSingelton = m_useSpringboneSingleton.value,
+                UseCustomPbrMaterial = m_useCustomPbrMaterial.value,
+                UseCustomMToonMaterial = m_useCustomMToonMaterial.value,
+            };
+        }
+
+        void OnLoaded(Loaded loaded)
+        {
+            // m_showBoxMan.isOn = false;
+            // m_happy.OnLoad(loaded.Instance.Vrm.Expression.Happy);
+            // m_angry.OnLoad(loaded.Instance.Vrm.Expression.Angry);
+            // m_sad.OnLoad(loaded.Instance.Vrm.Expression.Sad);
+            // m_relaxed.OnLoad(loaded.Instance.Vrm.Expression.Relaxed);
+            // m_surprised.OnLoad(loaded.Instance.Vrm.Expression.Surprised);
+            // m_lipAa.OnLoad(loaded.Instance.Vrm.Expression.Aa);
+            // m_lipIh.OnLoad(loaded.Instance.Vrm.Expression.Ih);
+            // m_lipOu.OnLoad(loaded.Instance.Vrm.Expression.Ou);
+            // m_lipEe.OnLoad(loaded.Instance.Vrm.Expression.Ee);
+            // m_lipOh.OnLoad(loaded.Instance.Vrm.Expression.Oh);
+            // m_blink.OnLoad(loaded.Instance.Vrm.Expression.Blink);
+        }
     }
 }
\ No newline at end of file
diff --git a/Assets/VRM10_Samples/VRM10Viewer/UI/VRM10ViewerUI.cs b/Assets/VRM10_Samples/VRM10Viewer/UI/VRM10ViewerUI.cs
index faff123e9..f90b4eb01 100644
--- a/Assets/VRM10_Samples/VRM10Viewer/UI/VRM10ViewerUI.cs
+++ b/Assets/VRM10_Samples/VRM10Viewer/UI/VRM10ViewerUI.cs
@@ -1,7 +1,5 @@
 using System;
-using System.Collections;
 using System.Collections.Generic;
-using System.IO;
 using System.Linq;
 using UniGLTF;
 using UniGLTF.SpringBoneJobs.Blittables;
@@ -406,61 +404,6 @@ namespace UniVRM10.VRM10Viewer
 #endif
         }
 
-        static class ArgumentChecker
-        {
-            static string[] Supported = {
-                ".gltf",
-                ".glb",
-                ".vrm",
-                ".zip",
-            };
-
-            static string UnityHubPath => System.Environment.GetEnvironmentVariable("ProgramFiles") + "\\Unity\\Hub";
-
-            public static bool IsLoadable(string path)
-            {
-                if (!File.Exists(path))
-                {
-                    // not exists
-                    return false;
-                }
-
-                if (Application.isEditor)
-                {
-                    // skip editor argument
-                    // {UnityHub_Resources}\PackageManager\ProjectTemplates\com.unity.template.3d-5.0.4.tgz
-                    if (path.StartsWith(UnityHubPath))
-                    {
-                        return false;
-                    }
-                }
-
-                var ext = Path.GetExtension(path).ToLower();
-                if (!Supported.Contains(ext))
-                {
-                    // unknown extension
-                    return false;
-                }
-
-                return true;
-            }
-
-            public static bool TryGetFirstLoadable(out string cmd)
-            {
-                foreach (var arg in System.Environment.GetCommandLineArgs())
-                {
-                    if (ArgumentChecker.IsLoadable(arg))
-                    {
-                        cmd = arg;
-                        return true;
-                    }
-                }
-
-                cmd = default;
-                return false;
-            }
-        }
-
         VRM10ViewerController m_controller;
         VRM10AutoExpression m_autoEmotion;
         VRM10Blinker m_autoBlink;
diff --git a/Assets/VRM10_Samples/VRM10Viewer/VRM10Viewer.unity b/Assets/VRM10_Samples/VRM10Viewer/VRM10Viewer.unity
index aa44525d3..4bf5fd380 100644
--- a/Assets/VRM10_Samples/VRM10Viewer/VRM10Viewer.unity
+++ b/Assets/VRM10_Samples/VRM10Viewer/VRM10Viewer.unity
@@ -4000,6 +4000,7 @@ GameObject:
   m_Component:
   - component: {fileID: 268016455}
   - component: {fileID: 268016454}
+  - component: {fileID: 268016456}
   m_Layer: 0
   m_Name: MainView
   m_TagString: Untagged
@@ -4039,6 +4040,27 @@ Transform:
   m_Children: []
   m_Father: {fileID: 0}
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
+--- !u!114 &268016456
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 268016453}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: ce3555915b1cabf43a72ad94373270e2, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  m_motion: {fileID: 4900000, guid: 08df5151e71aed748b13547492fb8b9a, type: 3}
+  m_pbrOpaqueMaterial: {fileID: -876546973899608171, guid: ac58f8c11a130e04ba883a82ae4b78e4,
+    type: 3}
+  m_pbrAlphaBlendMaterial: {fileID: -876546973899608171, guid: 868190a58757d6242bb3ca456402f82f,
+    type: 3}
+  m_mtoonMaterialOpaque: {fileID: -876546973899608171, guid: fd08e80eb7e04e849b8a6d534e48efea,
+    type: 3}
+  m_mtoonMaterialAlphaBlend: {fileID: -876546973899608171, guid: 6b60fe85d745eda4281e3278fcb0657c,
+    type: 3}
 --- !u!1 &279721863
 GameObject:
   m_ObjectHideFlags: 0