diff --git a/Packages/com.chocopoi.vrc.dressingtools/Editor/Integrations/VRChat/VRCMergeAnimLayerWearableModule.cs b/Packages/com.chocopoi.vrc.dressingtools/Editor/Integrations/VRChat/VRCMergeAnimLayerWearableModule.cs
new file mode 100644
index 00000000..6178dd34
--- /dev/null
+++ b/Packages/com.chocopoi.vrc.dressingtools/Editor/Integrations/VRChat/VRCMergeAnimLayerWearableModule.cs
@@ -0,0 +1,136 @@
+/*
+ * File: VRCMergeAnimLayerWearableModule.cs
+ * Project: DressingTools
+ * Created Date: Tuesday, 29th Aug 2023, 02:53:11 pm
+ * Author: chocopoi (poi@chocopoi.com)
+ * -----
+ * Copyright (c) 2023 chocopoi
+ * 
+ * This file is part of DressingTools.
+ * 
+ * DressingTools is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+ * 
+ * DressingTools is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License along with DressingTools. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#if VRC_SDK_VRCSDK3
+using System.Diagnostics.CodeAnalysis;
+using Chocopoi.DressingTools.Lib;
+using Chocopoi.DressingTools.Lib.Extensibility.Providers;
+using Chocopoi.DressingTools.Lib.Serialization;
+using Chocopoi.DressingTools.Lib.Wearable.Modules;
+using Newtonsoft.Json.Linq;
+using UnityEditor;
+using VRC.SDK3.Avatars.Components;
+
+namespace Chocopoi.DressingTools.Integration.VRChat.Modules
+{
+    internal class VRCMergeAnimLayerWearableModuleConfig : IModuleConfig
+    {
+        public enum AnimLayer
+        {
+            Base = 0,
+            Additive = 1,
+            Gesture = 2,
+            Action = 3,
+            FX = 4,
+            Sitting = 5,
+            TPose = 6,
+            IKPose = 7
+        }
+
+        public enum PathMode
+        {
+            Relative = 0,
+            Absolute = 1
+        }
+
+        public static readonly SerializationVersion CurrentConfigVersion = new SerializationVersion(1, 0, 0);
+
+        public SerializationVersion version;
+        public AnimLayer animLayer;
+        public PathMode pathMode;
+        public bool removeAnimatorAfterApply;
+        public bool matchLayerWriteDefaults;
+
+        public VRCMergeAnimLayerWearableModuleConfig()
+        {
+            version = CurrentConfigVersion;
+            animLayer = AnimLayer.FX;
+            pathMode = PathMode.Relative;
+            removeAnimatorAfterApply = true;
+            matchLayerWriteDefaults = true;
+        }
+
+        private static VRCAvatarDescriptor.AnimLayerType? ToAnimLayerType(AnimLayer type)
+        {
+            switch (type)
+            {
+                case AnimLayer.Base:
+                    return VRCAvatarDescriptor.AnimLayerType.Base;
+                case AnimLayer.Additive:
+                    return VRCAvatarDescriptor.AnimLayerType.Additive;
+                case AnimLayer.Gesture:
+                    return VRCAvatarDescriptor.AnimLayerType.Gesture;
+                case AnimLayer.Action:
+                    return VRCAvatarDescriptor.AnimLayerType.Action;
+                case AnimLayer.FX:
+                    return VRCAvatarDescriptor.AnimLayerType.FX;
+                case AnimLayer.Sitting:
+                    return VRCAvatarDescriptor.AnimLayerType.Sitting;
+                case AnimLayer.TPose:
+                    return VRCAvatarDescriptor.AnimLayerType.TPose;
+                case AnimLayer.IKPose:
+                    return VRCAvatarDescriptor.AnimLayerType.IKPose;
+            }
+            return null;
+        }
+    }
+
+    [InitializeOnLoad]
+    internal class VRCMergeAnimLayerWearableModuleProvider : WearableModuleProviderBase
+    {
+        public const string MODULE_IDENTIFIER = "com.chocopoi.dressingtools.integration.vrchat.wearable.merge-anim-layer";
+
+        [ExcludeFromCodeCoverage] public override string ModuleIdentifier => MODULE_IDENTIFIER;
+        [ExcludeFromCodeCoverage] public override string FriendlyName => "VRChat: Merge Animation Layer";
+        [ExcludeFromCodeCoverage] public override int CallOrder => 6;
+        [ExcludeFromCodeCoverage] public override bool AllowMultiple => false;
+
+        static VRCMergeAnimLayerWearableModuleProvider()
+        {
+            WearableModuleProviderLocator.Instance.Register(new VRCMergeAnimLayerWearableModuleProvider());
+        }
+
+        public override IModuleConfig DeserializeModuleConfig(JObject jObject)
+        {
+            // TODO: do schema check
+
+            var version = jObject["version"].ToObject<SerializationVersion>();
+            if (version.Major > VRCMergeAnimLayerWearableModuleConfig.CurrentConfigVersion.Major)
+            {
+                throw new System.Exception("Incompatible VRCMergeAnimLayerWearableModuleConfig version: " + version.Major + " > " + VRCMergeAnimLayerWearableModuleConfig.CurrentConfigVersion.Major);
+            }
+
+            return jObject.ToObject<VRCMergeAnimLayerWearableModuleConfig>();
+        }
+
+        public override IModuleConfig NewModuleConfig() => new VRCMergeAnimLayerWearableModuleConfig();
+
+        public override bool OnApplyWearable(ApplyCabinetContext cabCtx, ApplyWearableContext wearCtx, WearableModule module)
+        {
+            var malm = (VRCMergeAnimLayerWearableModuleConfig)module.config;
+
+            if (malm == null)
+            {
+                // no merge anim layer module
+                return true;
+            }
+
+            return true;
+        }
+    }
+}
+#endif
diff --git a/Packages/com.chocopoi.vrc.dressingtools/Editor/Integrations/VRChat/VRCMergeAnimLayerWearableModule.cs.meta b/Packages/com.chocopoi.vrc.dressingtools/Editor/Integrations/VRChat/VRCMergeAnimLayerWearableModule.cs.meta
new file mode 100644
index 00000000..3ad4e62e
--- /dev/null
+++ b/Packages/com.chocopoi.vrc.dressingtools/Editor/Integrations/VRChat/VRCMergeAnimLayerWearableModule.cs.meta
@@ -0,0 +1,11 @@
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+guid: bdbcebd3d680646479d17ad8d8a842fb
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
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