diff --git a/Assets/VRM10/Runtime/Components/SpringBone/VRM10SpringBoneCollider.cs b/Assets/VRM10/Runtime/Components/SpringBone/VRM10SpringBoneCollider.cs
index 482707acc..a63d513fd 100644
--- a/Assets/VRM10/Runtime/Components/SpringBone/VRM10SpringBoneCollider.cs
+++ b/Assets/VRM10/Runtime/Components/SpringBone/VRM10SpringBoneCollider.cs
@@ -28,12 +28,36 @@ namespace UniVRM10
 
         public Vector3 Normal = Vector3.up;
 
+        public Vector3 HeadWorldPosition => transform.TransformPoint(Offset);
+        public Vector3 TailWorldPosition => transform.TransformPoint(TailOrNormal);
         public Vector3 TailOrNormal => ColliderType == VRM10SpringBoneColliderTypes.Plane ? Normal : Tail;
 
         public static int SelectedGuid;
 
         public bool IsSelected => GetInstanceID() == SelectedGuid;
 
+        public Bounds GetBounds()
+        {
+            switch (ColliderType)
+            {
+                case VRM10SpringBoneColliderTypes.Capsule:
+                    {
+                        var h = HeadWorldPosition;
+                        var t = TailWorldPosition;
+                        var d = h - t;
+                        var aabb = new Bounds((h + t) * 0.5f, new Vector3(Mathf.Abs(d.x), Mathf.Abs(d.y), Mathf.Abs(d.z)));
+                        aabb.Expand(Radius * 2);
+                        return aabb;
+                    }
+
+                case VRM10SpringBoneColliderTypes.Sphere:
+                    return new Bounds(HeadWorldPosition, new Vector3(Radius, Radius, Radius));
+
+                default:
+                    throw new NotImplementedException();
+            }
+        }
+
         void OnDrawGizmosSelected()
         {
             DrawGizmos();
diff --git a/Assets/VRM10_Samples/ClothSample/ClothViewer/ClothViewerUI.cs b/Assets/VRM10_Samples/ClothSample/ClothViewer/ClothViewerUI.cs
index 98aee7693..15c8b982b 100644
--- a/Assets/VRM10_Samples/ClothSample/ClothViewer/ClothViewerUI.cs
+++ b/Assets/VRM10_Samples/ClothSample/ClothViewer/ClothViewerUI.cs
@@ -552,7 +552,11 @@ namespace UniVRM10.Cloth.Viewer
         void OnInit(RotateParticle.RotateParticleSystem system, Vrm10Instance vrm)
         {
             var animator = vrm.GetComponent<Animator>();
-            HumanoidCollider.AddColliders(system._colliderGroups, animator);
+            if (vrm.SpringBone.ColliderGroups.Count == 0)
+            {
+                HumanoidCollider.AddColliders(animator);
+            }
+
             try
             {
                 ClothGuess.Guess(animator);
diff --git a/Assets/VRM10_Samples/ClothSample/ClothViewer/HumanoidCollider.cs b/Assets/VRM10_Samples/ClothSample/ClothViewer/HumanoidCollider.cs
index 4cc67093d..f10d943d0 100644
--- a/Assets/VRM10_Samples/ClothSample/ClothViewer/HumanoidCollider.cs
+++ b/Assets/VRM10_Samples/ClothSample/ClothViewer/HumanoidCollider.cs
@@ -23,51 +23,31 @@ namespace UniVRM10.Cloth.Viewer
             ("Arm", HumanBodyBones.RightHand, HumanBodyBones.RightMiddleProximal, 0.02f),
         };
 
-        public static void AddColliders(List<ColliderGroup> _colliderGroups, Animator animator)
+        public static void AddColliders(Animator animator)
         {
-            foreach (var (group, head, tail, radius) in Capsules)
-            {
-                AddColliderIfNotExists(_colliderGroups, group,
-                    animator.GetBoneTransform(head),
-                    animator.GetBoneTransform(tail),
-                    radius);
-            }
-        }
+            Dictionary<string, VRM10SpringBoneColliderGroup> map = new();
 
-        static void AddColliderIfNotExists(List<ColliderGroup> _colliderGroups, string groupName,
-            Transform head, Transform tail, float radius)
-        {
-            ColliderGroup group = default;
-            foreach (var g in _colliderGroups)
+            foreach (var (group, _head, _tail, radius) in Capsules)
             {
-                if (g.Name == groupName)
+                if (!map.ContainsKey(group))
                 {
-                    group = g;
-                    break;
+                    var g = animator.gameObject.AddComponent<VRM10SpringBoneColliderGroup>();
+                    map.Add(group, g);
+                }
+
+
+                var head = animator.GetBoneTransform(_head);
+                var vrmCollider = head.gameObject.AddComponent<VRM10SpringBoneCollider>();
+                if (vrmCollider != null)
+                {
+                    vrmCollider.Radius = radius;
+                    vrmCollider.ColliderType = VRM10SpringBoneColliderTypes.Capsule;
+                    var tail = animator.GetBoneTransform(_tail);
+                    vrmCollider.Tail = head.worldToLocalMatrix.MultiplyPoint(tail.position);
+
+                    map[group].Colliders.Add(vrmCollider);    
                 }
             }
-            if (group == null)
-            {
-                group = new ColliderGroup { Name = groupName };
-                _colliderGroups.Add(group);
-            }
-
-            foreach (var collider in group.Colliders)
-            {
-                if (collider._vrm.transform == head)
-                {
-                    return;
-                }
-            }
-
-            var vrmCollider = head.gameObject.AddComponent<VRM10SpringBoneCollider>();
-            vrmCollider.Radius = radius;
-            vrmCollider.ColliderType = VRM10SpringBoneColliderTypes.Capsule;
-            vrmCollider.Tail = head.worldToLocalMatrix.MultiplyPoint(tail.position);
-
-            var c = new SphereCapsuleCollider(vrmCollider);
-            // c.GizmoColor = GetGizmoColor(group);
-            group.Colliders.Add(c);
         }
 
         static T GetOrAddComponent<T>(GameObject o) where T : Component
diff --git a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/Components/RotateParticleRuntimeProvider.cs b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/Components/RotateParticleRuntimeProvider.cs
index 56f1b3ed3..5ee13cbde 100644
--- a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/Components/RotateParticleRuntimeProvider.cs
+++ b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/Components/RotateParticleRuntimeProvider.cs
@@ -15,9 +15,11 @@ namespace RotateParticle.Components
         [SerializeField]
         public List<RectCloth> Cloths = new();
 
+        IVrm10SpringBoneRuntime m_runtime;
         public IVrm10SpringBoneRuntime CreateSpringBoneRuntime()
         {
-            return new RotateParticleSpringboneRuntime();
+            m_runtime = new RotateParticleSpringboneRuntime();
+            return m_runtime;
         }
 
         public void Reset()
@@ -25,5 +27,14 @@ namespace RotateParticle.Components
             Warps = GetComponentsInChildren<Warp>().ToList();
             Cloths = GetComponentsInChildren<RectCloth>().ToList();
         }
+
+        void OnDrawGizmos()
+        {
+            if (m_runtime == null)
+            {
+                return;
+            }
+            m_runtime.DrawGizmos();
+        }
     }
 }
\ No newline at end of file
diff --git a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/RotateParticleSpringboneRuntime.cs b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/RotateParticleSpringboneRuntime.cs
index 63acfb025..4561decad 100644
--- a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/RotateParticleSpringboneRuntime.cs
+++ b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/RotateParticleSpringboneRuntime.cs
@@ -58,6 +58,14 @@ namespace RotateParticle
                 _system._cloths.Add(cloth);
             }
 
+            foreach (var g in instance.SpringBone.ColliderGroups)
+            {
+                foreach (var vrmCollider in g.Colliders)
+                {
+                    _system.AddColliderIfNotExists(g.name, vrmCollider);
+                }
+            }
+
             await awaitCaller.NextFrame();
             _system.Initialize();
         }
diff --git a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/RotateParticleSystem.cs b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/RotateParticleSystem.cs
index c53272aca..9a23efd70 100644
--- a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/RotateParticleSystem.cs
+++ b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/RotateParticleSystem.cs
@@ -4,6 +4,7 @@ using System.Linq;
 using RotateParticle.Components;
 using SphereTriangle;
 using UnityEngine;
+using UniVRM10;
 
 
 namespace RotateParticle
@@ -254,7 +255,7 @@ namespace RotateParticle
                             foreach (var c in g.Colliders)
                             {
                                 // strand
-                                if (c != null && c.TryCollide(p, particle.Init.Radius, out var resolved))
+                                if (c != null && TryCollide(c, p, particle.Init.Radius, out var resolved))
                                 {
                                     _newPos.CollisionMove(particle.Init.Index, resolved, c.Radius);
                                 }
@@ -286,6 +287,123 @@ namespace RotateParticle
             }
         }
 
+        public ColliderGroup GetOrAddColliderGroup(string groupName)
+        {
+            foreach (var g in _colliderGroups)
+            {
+                if (g.Name == groupName)
+                {
+                    return g;
+                }
+            }
+
+            var group = new ColliderGroup { Name = groupName };
+            _colliderGroups.Add(group);
+            return group;
+        }
+
+        public void AddColliderIfNotExists(string groupName,
+           VRM10SpringBoneCollider c)
+        {
+            var group = GetOrAddColliderGroup(groupName);
+
+            foreach (var collider in group.Colliders)
+            {
+                if (collider == c)
+                {
+                    return;
+                }
+            }
+
+            // c.GizmoColor = GetGizmoColor(group);
+            group.Colliders.Add(c);
+        }
+
+        /// <summary>
+        /// collide sphere a and sphere b.
+        /// move sphere b to resolved if collide.
+        /// </summary>
+        /// <param name="from"></param>
+        /// <param name="ra"></param>
+        /// <param name="to"></param>
+        /// <param name="ba"></param>
+        /// <param name="resolved"></param>
+        /// <returns></returns>
+        static bool TryCollideSphereAndSphere(
+            in Vector3 from, float ra,
+            in Vector3 to, float rb,
+            out LineSegment resolved
+            )
+        {
+            var d = Vector3.Distance(from, to);
+            if (d > (ra + rb))
+            {
+                resolved = default;
+                return false;
+            }
+            Vector3 normal = (to - from).normalized;
+            resolved = new(from, from + normal * (d - rb));
+            return true;
+        }
+
+        /// <summary>
+        /// collide capsule and sphere b.
+        /// move sphere b to resolved if collide.
+        /// </summary>
+        /// <param name="capsuleHead"></param>
+        /// <param name="capsuleTail"></param>
+        /// <param name="capsuleRadius"></param>
+        /// <param name="b"></param>
+        /// <param name="rb"></param>
+        static bool TryCollideCapsuleAndSphere(
+            in Vector3 capsuleHead,
+            in Vector3 capsuleTail,
+            float capsuleRadius,
+            in Vector3 b,
+            float rb,
+            out LineSegment resolved
+            )
+        {
+            var P = (capsuleTail - capsuleHead).normalized;
+            var Q = b - capsuleHead;
+            var dot = Vector3.Dot(P, Q);
+            if (dot <= 0)
+            {
+                // head側半球の球判定
+                return TryCollideSphereAndSphere(capsuleHead, capsuleRadius, b, rb, out resolved);
+            }
+
+            var t = dot / P.magnitude;
+            if (t >= 1.0f)
+            {
+                // tail側半球の球判定
+                return TryCollideSphereAndSphere(capsuleTail, capsuleRadius, b, rb, out resolved);
+            }
+
+            // head-tail上の m_transform.position との最近点
+            var p = capsuleHead + P * t;
+            return TryCollideSphereAndSphere(p, capsuleRadius, b, rb, out resolved);
+        }
+
+        /// <summary>
+        /// collision for strand
+        /// </summary>
+        /// <param name="p"></param>
+        /// <param name="radius"></param>
+        /// <param name="resolved"></param>
+        /// <returns></returns>
+        public bool TryCollide(UniVRM10.VRM10SpringBoneCollider c, in Vector3 p, float radius, out LineSegment resolved)
+        {
+            if (c.ColliderType == UniVRM10.VRM10SpringBoneColliderTypes.Capsule)
+            {
+                return TryCollideCapsuleAndSphere(c.HeadWorldPosition, c.TailWorldPosition, c.Radius, p, radius, out resolved);
+            }
+            else
+            {
+                return TryCollideSphereAndSphere(c.HeadWorldPosition, c.Radius, p, radius, out resolved);
+            }
+        }
+
         public void DrawGizmos()
         {
             _list.DrawGizmos();
diff --git a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/CapsuleInfo.cs b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/CapsuleInfo.cs
index cde732b02..9da7d551e 100644
--- a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/CapsuleInfo.cs
+++ b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/CapsuleInfo.cs
@@ -1,10 +1,11 @@
 using UnityEngine;
+using UniVRM10;
 
 namespace SphereTriangle
 {
     struct CapsuleInfo
     {
-        public SphereCapsuleCollider Collider;
+        public VRM10SpringBoneCollider Collider;
         public Triangle Triangle;
 
         public Vector3 MinOnPlane;
@@ -28,7 +29,7 @@ namespace SphereTriangle
 
         public bool Intersected;
 
-        public CapsuleInfo(in Triangle t, SphereCapsuleCollider collider)
+        public CapsuleInfo(in Triangle t, VRM10SpringBoneCollider collider)
         {
             Collider = collider;
             Triangle = t;
diff --git a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/ClothRectCollision.cs b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/ClothRectCollision.cs
index d1a63d4a5..fa26fdeca 100644
--- a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/ClothRectCollision.cs
+++ b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/ClothRectCollision.cs
@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using UnityEngine;
+using UniVRM10;
 
 namespace SphereTriangle
 {
@@ -23,7 +24,7 @@ namespace SphereTriangle
         TriangleCapsuleCollisionSolver _s1 = new();
 
         // 各コライダーが初期姿勢で三角形ABCの法線の正か負のどちらにあるのかを記録する
-        Dictionary<SphereCapsuleCollider, float> _initialColliderNormalSide = new();
+        Dictionary<VRM10SpringBoneCollider, float> _initialColliderNormalSide = new();
 
         /// <summary>
         /// two triangles
@@ -81,7 +82,7 @@ namespace SphereTriangle
             return GetBoundsFrom4(list.Get(_a), list.Get(_b), list.Get(_c), list.Get(_d));
         }
 
-        public void Collide(PositionList list, IReadOnlyCollection<SphereCapsuleCollider> colliders)
+        public void Collide(PositionList list, IReadOnlyCollection<VRM10SpringBoneCollider> colliders)
         {
             using (new ProfileSample("Rect: Prepare"))
             {
@@ -160,9 +161,9 @@ namespace SphereTriangle
         /// <param name="t"></param>
         /// <param name="l"></param>
         /// <returns></returns>
-        static bool TryCollide(TriangleCapsuleCollisionSolver solver, SphereCapsuleCollider collider, in Triangle t, out LineSegment l)
+        static bool TryCollide(TriangleCapsuleCollisionSolver solver, VRM10SpringBoneCollider collider, in Triangle t, out LineSegment l)
         {
-            if (collider.IsCapsule)
+            if (collider.ColliderType == VRM10SpringBoneColliderTypes.Capsule)
             {
                 // capsule
                 TriangleCapsuleCollisionSolver.Result result = default;
@@ -207,15 +208,9 @@ namespace SphereTriangle
                 return true;
             }
 
-            // p を三辺に投影し t を得る
-            // var proj = triangle.Project(p);
-            // if (proj.TryGetClosest(collider, out var x))
-            // {
-            //     // 最近点の距離
-            //     // TODO:
-            //     return new LineSegment(collider, x);
-            // }
-            throw new System.NotImplementedException();
+            var closestPoint = triangle.GetClosest(collider);
+            l = new LineSegment(collider, closestPoint);
+            return true;
         }
 
         public void DrawGizmos()
diff --git a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/ColliderGroup.cs b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/ColliderGroup.cs
index 401d4d866..989942dae 100644
--- a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/ColliderGroup.cs
+++ b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/ColliderGroup.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using UnityEngine;
+using UniVRM10;
 
 namespace SphereTriangle
 {
@@ -11,6 +12,6 @@ namespace SphereTriangle
         public string Name;
 
         [SerializeField]
-        public List<SphereCapsuleCollider> Colliders = new List<SphereCapsuleCollider>();
+        public List<VRM10SpringBoneCollider> Colliders = new();
     }
 }
\ No newline at end of file
diff --git a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/LineDistanceGizmo.cs b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/LineDistanceGizmo.cs
index 6b7bdd469..963e6f0b8 100644
--- a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/LineDistanceGizmo.cs
+++ b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/LineDistanceGizmo.cs
@@ -1,23 +1,24 @@
 using UnityEngine;
+using UniVRM10;
 
 namespace SphereTriangle
 {
     public class LineDistanceGizmo : MonoBehaviour
     {
-        public SphereCapsuleCollider LineA;
-        public SphereCapsuleCollider LineB;
+        public VRM10SpringBoneCollider LineA;
+        public VRM10SpringBoneCollider LineB;
 
         void Reset()
         {
             if (LineA == null)
             {
-                LineA = GetComponent<SphereCapsuleCollider>();
+                LineA = GetComponent<VRM10SpringBoneCollider>();
             }
         }
 
         public void OnDrawGizmos()
         {
-            if (LineA.IsCapsule && LineB.IsCapsule)
+            if (LineA.ColliderType == VRM10SpringBoneColliderTypes.Capsule && LineB.ColliderType == VRM10SpringBoneColliderTypes.Capsule)
             {
                 var a = new LineSegment(LineA.HeadWorldPosition, LineA.TailWorldPosition);
                 var b = new LineSegment(LineB.HeadWorldPosition, LineB.TailWorldPosition);
diff --git a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/SphereCapsuleCollider.cs b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/SphereCapsuleCollider.cs
deleted file mode 100644
index 4eaf61794..000000000
--- a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/SphereCapsuleCollider.cs
+++ /dev/null
@@ -1,173 +0,0 @@
-using UnityEngine;
-using UniVRM10;
-
-
-namespace SphereTriangle
-{
-    public class SphereCapsuleCollider
-    {
-        public readonly VRM10SpringBoneCollider _vrm;
-        public Color GizmoColor = Color.yellow;
-        public bool SolidGizmo = false;
-
-        public float Radius => _vrm.Radius;
-        public bool IsCapsule => _vrm.ColliderType == VRM10SpringBoneColliderTypes.Capsule;
-        public Vector3 HeadWorldPosition => _vrm.transform.TransformPoint(_vrm.Offset);
-        public Vector3 TailWorldPosition => _vrm.transform.TransformPoint(_vrm.TailOrNormal);
-        public Ray? HeadTailRay => IsCapsule ? new Ray { origin = HeadWorldPosition, direction = TailWorldPosition - HeadWorldPosition } : null;
-        public float CapsuleLength => !IsCapsule ? 0 : Vector3.Distance(TailWorldPosition, HeadWorldPosition);
-
-        public SphereCapsuleCollider(VRM10SpringBoneCollider vrmCollider)
-        {
-            _vrm = vrmCollider;
-        }
-
-        public Bounds GetBounds()
-        {
-            if (IsCapsule)
-            {
-                var h = HeadWorldPosition;
-                var t = TailWorldPosition;
-                var d = h - t;
-                var aabb = new Bounds((h + t) * 0.5f, new Vector3(Mathf.Abs(d.x), Mathf.Abs(d.y), Mathf.Abs(d.z)));
-                aabb.Expand(_vrm.Radius * 2);
-                return aabb;
-            }
-            else
-            {
-                return new Bounds(HeadWorldPosition, new Vector3(_vrm.Radius, _vrm.Radius, _vrm.Radius));
-            }
-        }
-
-        /// <summary>
-        /// collide sphere a and sphere b.
-        /// move sphere b to resolved if collide.
-        /// </summary>
-        /// <param name="from"></param>
-        /// <param name="ra"></param>
-        /// <param name="to"></param>
-        /// <param name="ba"></param>
-        /// <param name="resolved"></param>
-        /// <returns></returns>
-        static bool TryCollideSphereAndSphere(
-            in Vector3 from, float ra,
-            in Vector3 to, float rb,
-            out LineSegment resolved
-            )
-        {
-            var d = Vector3.Distance(from, to);
-            if (d > (ra + rb))
-            {
-                resolved = default;
-                return false;
-            }
-            Vector3 normal = (to - from).normalized;
-            resolved = new(from, from + normal * (d - rb));
-            return true;
-        }
-
-        /// <summary>
-        /// collide capsule and sphere b.
-        /// move sphere b to resolved if collide.
-        /// </summary>
-        /// <param name="capsuleHead"></param>
-        /// <param name="capsuleTail"></param>
-        /// <param name="capsuleRadius"></param>
-        /// <param name="b"></param>
-        /// <param name="rb"></param>
-        static bool TryCollideCapsuleAndSphere(
-            in Vector3 capsuleHead,
-            in Vector3 capsuleTail,
-            float capsuleRadius,
-            in Vector3 b,
-            float rb,
-            out LineSegment resolved
-            )
-        {
-            var P = (capsuleTail - capsuleHead).normalized;
-            var Q = b - capsuleHead;
-            var dot = Vector3.Dot(P, Q);
-            if (dot <= 0)
-            {
-                // head側半球の球判定
-                return TryCollideSphereAndSphere(capsuleHead, capsuleRadius, b, rb, out resolved);
-            }
-
-            var t = dot / P.magnitude;
-            if (t >= 1.0f)
-            {
-                // tail側半球の球判定
-                return TryCollideSphereAndSphere(capsuleTail, capsuleRadius, b, rb, out resolved);
-            }
-
-            // head-tail上の m_transform.position との最近点
-            var p = capsuleHead + P * t;
-            return TryCollideSphereAndSphere(p, capsuleRadius, b, rb, out resolved);
-        }
-
-        /// <summary>
-        /// collision for strand
-        /// </summary>
-        /// <param name="p"></param>
-        /// <param name="radius"></param>
-        /// <param name="resolved"></param>
-        /// <returns></returns>
-        public bool TryCollide(in Vector3 p, float radius, out LineSegment resolved)
-        {
-            if (IsCapsule)
-            {
-                return TryCollideCapsuleAndSphere(HeadWorldPosition, TailWorldPosition, this.Radius, p, radius, out resolved);
-            }
-            else
-            {
-                return TryCollideSphereAndSphere(HeadWorldPosition, this.Radius, p, radius, out resolved);
-            }
-        }
-
-        public static void DrawCapsuleGizmo(Vector3 start, Vector3 end, float radius)
-        {
-            var tail = end - start;
-            var distance = (end - start).magnitude;
-            Gizmos.matrix = Matrix4x4.TRS(start, Quaternion.FromToRotation(Vector3.forward, tail), Vector3.one);
-            Gizmos.DrawWireSphere(Vector3.zero, radius);
-            Gizmos.DrawWireSphere(Vector3.forward * distance, radius);
-            var capsuleEnd = Vector3.forward * distance;
-            var offsets = new Vector3[] { new Vector3(-1.0f, 0.0f, 0.0f), new Vector3(0.0f, 1.0f, 0.0f), new Vector3(1.0f, 0.0f, 0.0f), new Vector3(0.0f, -1.0f, 0.0f) };
-            for (int i = 0; i < offsets.Length; i++)
-            {
-                Gizmos.DrawLine(offsets[i] * radius, capsuleEnd + offsets[i] * radius);
-            }
-            Gizmos.matrix = Matrix4x4.identity;
-        }
-
-        public void OnDrawGizmos()
-        {
-            if (SolidGizmo)
-            {
-                Gizmos.color = Color.white;
-                Gizmos.DrawSphere(HeadWorldPosition, Radius);
-            }
-
-            Gizmos.color = GizmoColor;
-            if (_vrm.transform.parent != null)
-            {
-                Gizmos.DrawLine(HeadWorldPosition, HeadWorldPosition);
-            }
-            if (IsCapsule)
-            {
-                DrawCapsuleGizmo(HeadWorldPosition, TailWorldPosition, Radius);
-            }
-            else
-            {
-                Gizmos.DrawWireSphere(HeadWorldPosition, Radius);
-            }
-
-#if AABB_DEBUG
-            Gizmos.matrix = Matrix4x4.identity;
-            Gizmos.color = Color.magenta;
-            var aabb = GetBounds();
-            Gizmos.DrawWireCube(aabb.center, aabb.size);
-#endif
-        }
-    }
-}
\ No newline at end of file
diff --git a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/SphereCapsuleCollider.cs.meta b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/SphereCapsuleCollider.cs.meta
deleted file mode 100644
index eb2d57d39..000000000
--- a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/SphereCapsuleCollider.cs.meta
+++ /dev/null
@@ -1,11 +0,0 @@
-fileFormatVersion: 2
-guid: 4d8072930ebf6d34ea30547c75dfb378
-MonoImporter:
-  externalObjects: {}
-  serializedVersion: 2
-  defaultReferences: []
-  executionOrder: 0
-  icon: {instanceID: 0}
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: 
diff --git a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/Triangle.cs b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/Triangle.cs
index 082007891..3b69a018c 100644
--- a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/Triangle.cs
+++ b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/Triangle.cs
@@ -36,6 +36,10 @@ namespace SphereTriangle
         public Vector3 b => Points[1];
         public Vector3 c => Points[2];
 
+        public LineSegment AB => new LineSegment(a, b);
+        public LineSegment BC => new LineSegment(b, c);
+        public LineSegment CA => new LineSegment(c, a);
+
         public Triangle(Vector3 a, Vector3 b, Vector3 c)
         {
             Plane = new Plane(a, b, c);
@@ -269,6 +273,47 @@ namespace SphereTriangle
         //     };
         // }
 
+        public Vector3 GetClosest(in Vector3 p)
+        {
+            var ab = AB;
+            var t_ab = ab.Project(p);
+            var p_ab = ab.GetPoint(t_ab);
+            var d_ab = Vector3.Distance(p, p_ab);
+
+            var bc = BC;
+            var t_bc = bc.Project(p);
+            var p_bc = bc.GetPoint(t_bc);
+            var d_bc = Vector3.Distance(p, p_bc);
+
+            var ca = CA;
+            var t_ca = ca.Project(p);
+            var p_ca = ca.GetPoint(t_ca);
+            var d_ca = Vector3.Distance(p, p_ca);
+
+            if (d_ab < d_bc)
+            {
+                if (d_ab < d_ca)
+                {
+                    return p_ab;
+                }
+                else
+                {
+                    return p_ca;
+                }
+            }
+            else
+            {
+                if (d_bc < d_ca)
+                {
+                    return p_bc;
+                }
+                else
+                {
+                    return p_ca;
+                }
+            }
+        }
+
         public void DrawGizmos()
         {
 #if UNITY_2022_3_OR_NEWER
diff --git a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/TriangleCapsuleCollisionSolver.cs b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/TriangleCapsuleCollisionSolver.cs
index 63d1cee79..0ce7ad4f6 100644
--- a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/TriangleCapsuleCollisionSolver.cs
+++ b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/TriangleCapsuleCollisionSolver.cs
@@ -2,6 +2,7 @@
 using System;
 using System.Collections.Generic;
 using UnityEngine;
+using UniVRM10;
 
 namespace SphereTriangle
 {
@@ -129,14 +130,14 @@ namespace SphereTriangle
             public Result Result;
         }
         // 複数コライダーのデバッグ表示のため
-        public Dictionary<SphereCapsuleCollider, Status> collider_status_map = new();
+        public Dictionary<VRM10SpringBoneCollider, Status> collider_status_map = new();
 
         public void BeginFrame()
         {
             collider_status_map.Clear();
         }
 
-        public Result Collide(in Triangle t, SphereCapsuleCollider collider, in LineSegment capsule, float radius)
+        public Result Collide(in Triangle t, VRM10SpringBoneCollider collider, in LineSegment capsule, float radius)
         {
             if (collider == null)
             {
diff --git a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/TriangleCapsuleGizmo.cs b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/TriangleCapsuleGizmo.cs
index 40f20711c..f842d4594 100644
--- a/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/TriangleCapsuleGizmo.cs
+++ b/Assets/VRM10_Samples/ClothSample/RotateParticle/Runtime/SphereTriangle/TriangleCapsuleGizmo.cs
@@ -1,4 +1,5 @@
 using UnityEngine;
+using UniVRM10;
 
 
 namespace SphereTriangle
@@ -7,7 +8,7 @@ namespace SphereTriangle
     {
         public Transform B;
         public Transform C;
-        public SphereCapsuleCollider Capsule;
+        public VRM10SpringBoneCollider Capsule;
 
         void Reset()
         {
@@ -35,7 +36,7 @@ namespace SphereTriangle
             if (C == null) return;
             var t = new Triangle(transform.position, B.position, C.position);
 
-            if (!Capsule.IsCapsule) return;
+            if (Capsule.ColliderType != VRM10SpringBoneColliderTypes.Capsule) return;
             var capsule = new LineSegment(Capsule.HeadWorldPosition, Capsule.TailWorldPosition);
 
             _solver.BeginFrame();