diff --git a/Assets/VRM/Runtime/SpringBone/VRMSpringBone.cs b/Assets/VRM/Runtime/SpringBone/VRMSpringBone.cs
index e505b8914..06e5ad58f 100644
--- a/Assets/VRM/Runtime/SpringBone/VRMSpringBone.cs
+++ b/Assets/VRM/Runtime/SpringBone/VRMSpringBone.cs
@@ -23,11 +23,11 @@ namespace VRM
         [Header("Settings")]
         public float m_stiffnessForce = 1.0f;
 
-        [SerializeField] [Range(0, 2)] public float m_gravityPower;
+        [SerializeField][Range(0, 2)] public float m_gravityPower;
 
         [SerializeField] public Vector3 m_gravityDir = new Vector3(0, -1.0f, 0);
 
-        [SerializeField] [Range(0, 1)] public float m_dragForce = 0.4f;
+        [SerializeField][Range(0, 1)] public float m_dragForce = 0.4f;
 
         [SerializeField] public Transform m_center;
 
@@ -46,6 +46,7 @@ namespace VRM
         {
             LateUpdate,
             FixedUpdate,
+            Manual,
         }
         [SerializeField]
         public SpringBoneUpdateType m_updateType = SpringBoneUpdateType.LateUpdate;
@@ -263,6 +264,15 @@ namespace VRM
             }
         }
 
+        public void ManualUpdate(float deltaTime)
+        {
+            if (m_updateType != SpringBoneUpdateType.Manual)
+            {
+                throw new System.ArgumentException("require SpringBoneUpdateType.Manual");
+            }
+            UpdateProcess(deltaTime);
+        }
+
         public struct SphereCollider
         {
             // public Transform Transform;
diff --git a/Assets/VRM10/Runtime/FastSpringBone/System/FastSpringBoneScheduler.cs b/Assets/VRM10/Runtime/FastSpringBone/System/FastSpringBoneScheduler.cs
index c5079cfc0..f3adb0bad 100644
--- a/Assets/VRM10/Runtime/FastSpringBone/System/FastSpringBoneScheduler.cs
+++ b/Assets/VRM10/Runtime/FastSpringBone/System/FastSpringBoneScheduler.cs
@@ -13,7 +13,7 @@ namespace UniVRM10.FastSpringBones.System
             _bufferCombiner = bufferCombiner;
         }
 
-        public JobHandle Schedule()
+        public JobHandle Schedule(float deltaTime)
         {
             var handle = default(JobHandle);
             handle = _bufferCombiner.ReconstructIfDirty(handle);
@@ -34,7 +34,7 @@ namespace UniVRM10.FastSpringBones.System
                 Logics = _bufferCombiner.Logics,
                 Springs = _bufferCombiner.Springs,
                 Transforms = _bufferCombiner.Transforms,
-                DeltaTime = Time.deltaTime,
+                DeltaTime = deltaTime,
             }.Schedule(_bufferCombiner.Springs.Length, 1, handle);
 
             handle = new PushTransformJob
diff --git a/Assets/VRM10/Runtime/FastSpringBone/System/FastSpringBoneService.cs b/Assets/VRM10/Runtime/FastSpringBone/System/FastSpringBoneService.cs
index d3e103977..993e786f9 100644
--- a/Assets/VRM10/Runtime/FastSpringBone/System/FastSpringBoneService.cs
+++ b/Assets/VRM10/Runtime/FastSpringBone/System/FastSpringBoneService.cs
@@ -3,8 +3,41 @@ using UnityEngine;
 namespace UniVRM10.FastSpringBones.System
 {
     [DefaultExecutionOrder(11000)]
+    /// <summary>
+    /// VRM-1.0 ではコンポーネントの処理順が規定されている
+    /// 
+    /// 1. ヒューマノイドボーンを解決
+    /// 2. 頭の位置が決まるのでLookAtを解決
+    /// 3. ExpressionUpdate
+    /// 4. コンストレイントを解決
+    /// 5. SpringBoneを解決
+    /// 
+    /// 1~4 は Vrm10Runtime が管理し LateUpdate で処理される。
+    /// このクラスは DefaultExecutionOrder(11000) によりその後ろにまわる。
+    /// 
+    /// # [Manual update]
+    /// 
+    /// foreach(var vrmInstance in allVrm)
+    /// {
+    ///     vrmInstance.UpdateType = None;
+    ///     vrmInstance.Runtime.Process();
+    /// }
+    /// FastSpringBoneService.Instance.UpdateType = Manual;
+    /// FastSpringBoneService.Instance.ManualUpdate();
+    ///
+    /// </summary>
     public sealed class FastSpringBoneService : MonoBehaviour
     {
+        public enum UpdateTypes
+        {
+            Manual,
+            LateUpdate,
+        }
+
+        [SerializeField, Header("Runtime")]
+        public UpdateTypes UpdateType = UpdateTypes.LateUpdate;
+
+
         public FastSpringBoneBufferCombiner BufferCombiner { get; private set; }
         private FastSpringBoneScheduler _fastSpringBoneScheduler;
 
@@ -50,7 +83,19 @@ namespace UniVRM10.FastSpringBones.System
 
         private void LateUpdate()
         {
-            _fastSpringBoneScheduler.Schedule().Complete();
+            if (UpdateType == UpdateTypes.LateUpdate)
+            {
+                _fastSpringBoneScheduler.Schedule(Time.deltaTime).Complete();
+            }
+        }
+
+        public void ManualUpdate(float deltaTime)
+        {
+            if (UpdateType != UpdateTypes.Manual)
+            {
+                throw new global::System.ArgumentException("require UpdateTypes.None");
+            }
+            _fastSpringBoneScheduler.Schedule(deltaTime).Complete();
         }
     }
 }
\ No newline at end of file