diff --git a/Assets/VRM10/Runtime/Components/Constraint/Vrm10AimConstraint.cs b/Assets/VRM10/Runtime/Components/Constraint/Vrm10AimConstraint.cs
index 72d364c82..15d489eae 100644
--- a/Assets/VRM10/Runtime/Components/Constraint/Vrm10AimConstraint.cs
+++ b/Assets/VRM10/Runtime/Components/Constraint/Vrm10AimConstraint.cs
@@ -70,11 +70,37 @@ namespace UniVRM10
             var toVec = (Source.position - transform.position).normalized;
             var fromToQuat = Quaternion.FromToRotation(fromVec, toVec);
 
-            transform.rotation = Quaternion.SlerpUnclamped(
+            transform.localRotation = Quaternion.SlerpUnclamped(
                 _dstRestLocalQuat,
                 Quaternion.Inverse(dstParentWorldQuat) * fromToQuat * dstParentWorldQuat * _dstRestLocalQuat,
                 Weight
             );
         }
+
+        public void OnDrawGizmosSelected()
+        {
+            if (Source == null)
+            {
+                return;
+            }
+
+            Gizmos.color = Color.magenta;
+            Gizmos.DrawLine(transform.position, Source.position);
+            Gizmos.DrawSphere(Source.position, 0.01f);
+
+            Gizmos.matrix = transform.localToWorldMatrix;
+            var len = 0.1f;
+            switch (AimAxis)
+            {
+                case AimAxis.PositiveX:
+                    Gizmos.color = Color.red;
+                    Gizmos.DrawLine(Vector3.zero, Vector3.right * len);
+                    break;
+                case AimAxis.NegativeX:
+                    Gizmos.color = Color.red;
+                    Gizmos.DrawLine(Vector3.zero, Vector3.left * len);
+                    break;
+            }
+        }
     }
 }
diff --git a/Assets/VRM10/Runtime/Components/Constraint/Vrm10ConstraintUtil.cs b/Assets/VRM10/Runtime/Components/Constraint/Vrm10ConstraintUtil.cs
new file mode 100644
index 000000000..702f17d02
--- /dev/null
+++ b/Assets/VRM10/Runtime/Components/Constraint/Vrm10ConstraintUtil.cs
@@ -0,0 +1,18 @@
+namespace UniVRM10
+{
+    public static class Vrm10ConstraintUtil
+    {
+        /// <summary>
+        /// 右手系と左手系を相互に変換する
+        /// </summary>
+        public static UniGLTF.Extensions.VRMC_node_constraint.AimAxis ReverseX(UniGLTF.Extensions.VRMC_node_constraint.AimAxis src)
+        {
+            switch (src)
+            {
+                case UniGLTF.Extensions.VRMC_node_constraint.AimAxis.PositiveX: return UniGLTF.Extensions.VRMC_node_constraint.AimAxis.NegativeX;
+                case UniGLTF.Extensions.VRMC_node_constraint.AimAxis.NegativeX: return UniGLTF.Extensions.VRMC_node_constraint.AimAxis.PositiveX;
+                default: return src;
+            }
+        }
+    }
+}
diff --git a/Assets/VRM10/Runtime/Components/Constraint/Vrm10ConstraintUtil.cs.meta b/Assets/VRM10/Runtime/Components/Constraint/Vrm10ConstraintUtil.cs.meta
new file mode 100644
index 000000000..461a75070
--- /dev/null
+++ b/Assets/VRM10/Runtime/Components/Constraint/Vrm10ConstraintUtil.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: e2c7b76ebe42e9543ac52153ea9f2728
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/VRM10/Runtime/IO/Vrm10Exporter.cs b/Assets/VRM10/Runtime/IO/Vrm10Exporter.cs
index af3dc02f4..bd20f8cb4 100644
--- a/Assets/VRM10/Runtime/IO/Vrm10Exporter.cs
+++ b/Assets/VRM10/Runtime/IO/Vrm10Exporter.cs
@@ -430,7 +430,7 @@ namespace UniVRM10
                         {
                             Source = model.Nodes.IndexOf(converter.Nodes[aimConstraint.Source.gameObject]),
                             Weight = aimConstraint.Weight,
-                            AimAxis = aimConstraint.AimAxis,
+                            AimAxis = Vrm10ConstraintUtil.ReverseX(aimConstraint.AimAxis),
                         };
                         break;
 
diff --git a/Assets/VRM10/Runtime/IO/Vrm10Importer.cs b/Assets/VRM10/Runtime/IO/Vrm10Importer.cs
index 1fab7d277..6aed057d5 100644
--- a/Assets/VRM10/Runtime/IO/Vrm10Importer.cs
+++ b/Assets/VRM10/Runtime/IO/Vrm10Importer.cs
@@ -701,7 +701,7 @@ namespace UniVRM10
                         var component = node.gameObject.AddComponent<Vrm10AimConstraint>();
                         component.Source = Nodes[aim.Source.Value]; // required
                         component.Weight = aim.Weight.GetValueOrDefault(1.0f);
-                        component.AimAxis = aim.AimAxis; // required
+                        component.AimAxis = Vrm10ConstraintUtil.ReverseX(aim.AimAxis); // required
                     }
                     else if (constraint.Rotation != null)
                     {