diff --git a/Packages/net.fushizen.modular-avatar/Editor/Inspector/AvatarParametersEditor.cs b/Packages/net.fushizen.modular-avatar/Editor/Inspector/AvatarParametersEditor.cs
index 9ef8ce6f..850aed16 100644
--- a/Packages/net.fushizen.modular-avatar/Editor/Inspector/AvatarParametersEditor.cs
+++ b/Packages/net.fushizen.modular-avatar/Editor/Inspector/AvatarParametersEditor.cs
@@ -413,7 +413,8 @@ namespace net.fushizen.modular_avatar.core.editor
         public override void OnInspectorGUI()
         {
             LogoDisplay.DisplayLogo();
-            
+            InspectorCommon.DisplayOutOfAvatarWarning(targets);
+
             EditorGUI.BeginChangeCheck();
             _devMode = EditorGUILayout.Toggle(G("params.devmode"), _devMode);
             if (EditorGUI.EndChangeCheck() || _reorderableList == null || _needsRebuild) SetupList();
diff --git a/Packages/net.fushizen.modular-avatar/Editor/Inspector/BlendshapeSyncEditor.cs b/Packages/net.fushizen.modular-avatar/Editor/Inspector/BlendshapeSyncEditor.cs
index 4b31e220..b9aced4f 100644
--- a/Packages/net.fushizen.modular-avatar/Editor/Inspector/BlendshapeSyncEditor.cs
+++ b/Packages/net.fushizen.modular-avatar/Editor/Inspector/BlendshapeSyncEditor.cs
@@ -246,6 +246,8 @@ namespace net.fushizen.modular_avatar.core.editor
         {
             LogoDisplay.DisplayLogo();
 
+            InspectorCommon.DisplayOutOfAvatarWarning(targets);
+
             serializedObject.Update();
 
             _list.DoLayoutList();
diff --git a/Packages/net.fushizen.modular-avatar/Editor/Inspector/BoneProxyEditor.cs b/Packages/net.fushizen.modular-avatar/Editor/Inspector/BoneProxyEditor.cs
index 1813d542..7abb37b3 100644
--- a/Packages/net.fushizen.modular-avatar/Editor/Inspector/BoneProxyEditor.cs
+++ b/Packages/net.fushizen.modular-avatar/Editor/Inspector/BoneProxyEditor.cs
@@ -29,7 +29,8 @@ namespace net.fushizen.modular_avatar.core.editor
         public override void OnInspectorGUI()
         {
             LogoDisplay.DisplayLogo();
-            
+            InspectorCommon.DisplayOutOfAvatarWarning(targets);
+
             GameObject parentAvatar = null;
 
             bool suppressTarget = false;
diff --git a/Packages/net.fushizen.modular-avatar/Editor/Inspector/FirstPersonVisibleEditor.cs b/Packages/net.fushizen.modular-avatar/Editor/Inspector/FirstPersonVisibleEditor.cs
index a7db0262..b6143981 100644
--- a/Packages/net.fushizen.modular-avatar/Editor/Inspector/FirstPersonVisibleEditor.cs
+++ b/Packages/net.fushizen.modular-avatar/Editor/Inspector/FirstPersonVisibleEditor.cs
@@ -21,6 +21,10 @@ namespace net.fushizen.modular_avatar.core.editor
         {
             var target = (ModularAvatarFirstPersonVisible) this.target;
 
+            LogoDisplay.DisplayLogo();
+
+            InspectorCommon.DisplayOutOfAvatarWarning(targets);
+
 #if UNITY_ANDROID
             EditorGUILayout.HelpBox(Localization.S("fpvisible.quest"), MessageType.Warning);
 
diff --git a/Packages/net.fushizen.modular-avatar/Editor/Inspector/GUIColorScope.cs b/Packages/net.fushizen.modular-avatar/Editor/Inspector/GUIColorScope.cs
deleted file mode 100644
index 4bf93df1..00000000
--- a/Packages/net.fushizen.modular-avatar/Editor/Inspector/GUIColorScope.cs
+++ /dev/null
@@ -1,21 +0,0 @@
-using System;
-using UnityEngine;
-
-namespace net.fushizen.modular_avatar.core.editor
-{
-    public class GUIColorScope : IDisposable
-    {
-        private readonly Color _oldColor;
-
-        public GUIColorScope(Color color)
-        {
-            _oldColor = GUI.color;
-            GUI.color = color;
-        }
-
-        public void Dispose()
-        {
-            GUI.color = _oldColor;
-        }
-    }
-}
\ No newline at end of file
diff --git a/Packages/net.fushizen.modular-avatar/Editor/Inspector/GUIColorScope.cs.meta b/Packages/net.fushizen.modular-avatar/Editor/Inspector/GUIColorScope.cs.meta
deleted file mode 100644
index 41b05a82..00000000
--- a/Packages/net.fushizen.modular-avatar/Editor/Inspector/GUIColorScope.cs.meta
+++ /dev/null
@@ -1,3 +0,0 @@
-fileFormatVersion: 2
-guid: 775469f355c64ef2b3e3f5de10e2cde4
-timeCreated: 1667876954
\ No newline at end of file
diff --git a/Packages/net.fushizen.modular-avatar/Editor/Inspector/InspectorCommon.cs b/Packages/net.fushizen.modular-avatar/Editor/Inspector/InspectorCommon.cs
new file mode 100644
index 00000000..cec24dcf
--- /dev/null
+++ b/Packages/net.fushizen.modular-avatar/Editor/Inspector/InspectorCommon.cs
@@ -0,0 +1,23 @@
+using UnityEditor;
+using UnityEditor.Experimental.SceneManagement;
+using UnityEngine;
+
+namespace net.fushizen.modular_avatar.core.editor
+{
+    internal static class InspectorCommon
+    {
+        internal static void DisplayOutOfAvatarWarning(Object[] targets)
+        {
+            if (PrefabStageUtility.GetCurrentPrefabStage() != null) return;
+            if (targets.Length != 1) return;
+
+            var target = targets[0] as Component;
+            if (target == null) return;
+
+            if (RuntimeUtil.FindAvatarInParents(target.transform) == null)
+            {
+                EditorGUILayout.HelpBox(Localization.S("hint.not_in_avatar"), MessageType.Warning);
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/Packages/net.fushizen.modular-avatar/Editor/Inspector/InspectorCommon.cs.meta b/Packages/net.fushizen.modular-avatar/Editor/Inspector/InspectorCommon.cs.meta
new file mode 100644
index 00000000..32e9ed1f
--- /dev/null
+++ b/Packages/net.fushizen.modular-avatar/Editor/Inspector/InspectorCommon.cs.meta
@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 3f28108b9ff54e18af150d9172ae275b
+timeCreated: 1667882294
\ No newline at end of file
diff --git a/Packages/net.fushizen.modular-avatar/Editor/Inspector/MenuInstallerEditor.cs b/Packages/net.fushizen.modular-avatar/Editor/Inspector/MenuInstallerEditor.cs
index 37b8c0ab..9496759e 100644
--- a/Packages/net.fushizen.modular-avatar/Editor/Inspector/MenuInstallerEditor.cs
+++ b/Packages/net.fushizen.modular-avatar/Editor/Inspector/MenuInstallerEditor.cs
@@ -50,6 +50,7 @@ namespace net.fushizen.modular_avatar.core.editor
         public override void OnInspectorGUI()
         {
             LogoDisplay.DisplayLogo();
+            InspectorCommon.DisplayOutOfAvatarWarning(targets);
 
             SetupMenuEditor();
 
diff --git a/Packages/net.fushizen.modular-avatar/Editor/Inspector/MergeAnimationEditor.cs b/Packages/net.fushizen.modular-avatar/Editor/Inspector/MergeAnimationEditor.cs
index b4b6c2e3..27d99d05 100644
--- a/Packages/net.fushizen.modular-avatar/Editor/Inspector/MergeAnimationEditor.cs
+++ b/Packages/net.fushizen.modular-avatar/Editor/Inspector/MergeAnimationEditor.cs
@@ -49,6 +49,7 @@ namespace net.fushizen.modular_avatar.core.editor
         public override void OnInspectorGUI()
         {
             LogoDisplay.DisplayLogo();
+            InspectorCommon.DisplayOutOfAvatarWarning(targets);
 
             serializedObject.Update();
 
diff --git a/Packages/net.fushizen.modular-avatar/Editor/Inspector/MergeArmatureEditor.cs b/Packages/net.fushizen.modular-avatar/Editor/Inspector/MergeArmatureEditor.cs
index 01c7a932..cc31a784 100644
--- a/Packages/net.fushizen.modular-avatar/Editor/Inspector/MergeArmatureEditor.cs
+++ b/Packages/net.fushizen.modular-avatar/Editor/Inspector/MergeArmatureEditor.cs
@@ -33,6 +33,7 @@ namespace net.fushizen.modular_avatar.core.editor
         public override void OnInspectorGUI()
         {
             LogoDisplay.DisplayLogo();
+            InspectorCommon.DisplayOutOfAvatarWarning(targets);
 
             var target = (ModularAvatarMergeArmature) this.target;
             var priorMergeTarget = target.mergeTargetObject;
diff --git a/Packages/net.fushizen.modular-avatar/Editor/Localization/en.json b/Packages/net.fushizen.modular-avatar/Editor/Localization/en.json
index 500e308b..d5d4e2f7 100644
--- a/Packages/net.fushizen.modular-avatar/Editor/Localization/en.json
+++ b/Packages/net.fushizen.modular-avatar/Editor/Localization/en.json
@@ -44,5 +44,6 @@
   "fpvisible.InPhysBoneChain": "This object is controlled by a Physics Bone chain and cannot be made visible in first person safely. Select the start of the chain instead.",
   "blendshape.mesh": "Mesh",
   "blendshape.source": "Source blendshape",
-  "blendshape.target": "Target blendshape"
+  "blendshape.target": "Target blendshape",
+  "hint.not_in_avatar": "This component needs to be placed inside your avatar to work properly."
 }
\ No newline at end of file
diff --git a/Packages/net.fushizen.modular-avatar/Editor/Localization/ja.json b/Packages/net.fushizen.modular-avatar/Editor/Localization/ja.json
index 4337c1da..ddc44db7 100644
--- a/Packages/net.fushizen.modular-avatar/Editor/Localization/ja.json
+++ b/Packages/net.fushizen.modular-avatar/Editor/Localization/ja.json
@@ -44,5 +44,6 @@
   "fpvisible.InPhysBoneChain": "このオブジェクトはPhysBoneに制御されているため、一人視点で表示できません。PhysBoneの始点を指定してください。",
   "blendshape.mesh": "メッシュ",
   "blendshape.source": "元メッシュのブレンドシェープ",
-  "blendshape.target": "このメッシュのブレンドシェープ"
+  "blendshape.target": "このメッシュのブレンドシェープ",
+  "hint.not_in_avatar": "このコンポーネントが正しく動作するには、アバター内に配置する必要があります。"
 }
\ No newline at end of file