diff --git a/Scripts/UniTask.meta b/Scripts/DepthFirstScheduler.meta
similarity index 100%
rename from Scripts/UniTask.meta
rename to Scripts/DepthFirstScheduler.meta
diff --git a/Scripts/UniTask/Functor.cs b/Scripts/DepthFirstScheduler/Functor.cs
similarity index 95%
rename from Scripts/UniTask/Functor.cs
rename to Scripts/DepthFirstScheduler/Functor.cs
index cb2a58961..506330542 100644
--- a/Scripts/UniTask/Functor.cs
+++ b/Scripts/DepthFirstScheduler/Functor.cs
@@ -1,7 +1,7 @@
 using System;
 using System.Collections;
 
-namespace UniTask
+namespace DepthFirstScheduler
 {
     public enum ExecutionStatus
     {
diff --git a/Scripts/UniTask/Functor.cs.meta b/Scripts/DepthFirstScheduler/Functor.cs.meta
similarity index 100%
rename from Scripts/UniTask/Functor.cs.meta
rename to Scripts/DepthFirstScheduler/Functor.cs.meta
diff --git a/Scripts/UniTask/LockQueue.cs b/Scripts/DepthFirstScheduler/LockQueue.cs
similarity index 93%
rename from Scripts/UniTask/LockQueue.cs
rename to Scripts/DepthFirstScheduler/LockQueue.cs
index bf369877a..3274fad27 100644
--- a/Scripts/UniTask/LockQueue.cs
+++ b/Scripts/DepthFirstScheduler/LockQueue.cs
@@ -2,7 +2,7 @@
 using System.Collections.Generic;
 
 
-namespace UniTask
+namespace DepthFirstScheduler
 {
     public class LockQueue<T> where T : class
     {
diff --git a/Scripts/UniTask/LockQueue.cs.meta b/Scripts/DepthFirstScheduler/LockQueue.cs.meta
similarity index 100%
rename from Scripts/UniTask/LockQueue.cs.meta
rename to Scripts/DepthFirstScheduler/LockQueue.cs.meta
diff --git a/Scripts/UniTask/MainThreadDispatcher.cs b/Scripts/DepthFirstScheduler/MainThreadDispatcher.cs
similarity index 95%
rename from Scripts/UniTask/MainThreadDispatcher.cs
rename to Scripts/DepthFirstScheduler/MainThreadDispatcher.cs
index d0bd8c208..92bcf697d 100644
--- a/Scripts/UniTask/MainThreadDispatcher.cs
+++ b/Scripts/DepthFirstScheduler/MainThreadDispatcher.cs
@@ -2,7 +2,7 @@
 using System.Collections.Generic;
 using UnityEngine;
 
-namespace UniTask
+namespace DepthFirstScheduler
 {
     /// <summary>
     /// UniRxのMainThreadDispatcherを参考にした。
diff --git a/Scripts/UniTask/MainThreadDispatcher.cs.meta b/Scripts/DepthFirstScheduler/MainThreadDispatcher.cs.meta
similarity index 100%
rename from Scripts/UniTask/MainThreadDispatcher.cs.meta
rename to Scripts/DepthFirstScheduler/MainThreadDispatcher.cs.meta
diff --git a/Scripts/UniTask/MonitorQueue.cs b/Scripts/DepthFirstScheduler/MonitorQueue.cs
similarity index 92%
rename from Scripts/UniTask/MonitorQueue.cs
rename to Scripts/DepthFirstScheduler/MonitorQueue.cs
index 034fc9112..bb5eeb1a7 100644
--- a/Scripts/UniTask/MonitorQueue.cs
+++ b/Scripts/DepthFirstScheduler/MonitorQueue.cs
@@ -3,7 +3,7 @@ using System.Collections.Generic;
 using System.Threading;
 
 
-namespace UniTask
+namespace DepthFirstScheduler
 {
     /// <summary>
     /// http://blogs.msdn.com/b/toub/archive/2006/04/12/blocking-queues.aspx
diff --git a/Scripts/UniTask/MonitorQueue.cs.meta b/Scripts/DepthFirstScheduler/MonitorQueue.cs.meta
similarity index 100%
rename from Scripts/UniTask/MonitorQueue.cs.meta
rename to Scripts/DepthFirstScheduler/MonitorQueue.cs.meta
diff --git a/Scripts/UniTask/Schedulable.cs b/Scripts/DepthFirstScheduler/Schedulable.cs
similarity index 96%
rename from Scripts/UniTask/Schedulable.cs
rename to Scripts/DepthFirstScheduler/Schedulable.cs
index db8f498ec..47dab7c66 100644
--- a/Scripts/UniTask/Schedulable.cs
+++ b/Scripts/DepthFirstScheduler/Schedulable.cs
@@ -5,7 +5,7 @@ using System.Collections.Generic;
 using System.Threading.Tasks;
 #endif
 
-namespace UniTask
+namespace DepthFirstScheduler
 {
     public interface ISchedulable
     {
diff --git a/Scripts/UniTask/Schedulable.cs.meta b/Scripts/DepthFirstScheduler/Schedulable.cs.meta
similarity index 100%
rename from Scripts/UniTask/Schedulable.cs.meta
rename to Scripts/DepthFirstScheduler/Schedulable.cs.meta
diff --git a/Scripts/UniTask/Scheduler.cs b/Scripts/DepthFirstScheduler/Scheduler.cs
similarity index 75%
rename from Scripts/UniTask/Scheduler.cs
rename to Scripts/DepthFirstScheduler/Scheduler.cs
index 90abc3e1a..20ae4d4a1 100644
--- a/Scripts/UniTask/Scheduler.cs
+++ b/Scripts/DepthFirstScheduler/Scheduler.cs
@@ -1,6 +1,6 @@
 using System;
 
-namespace UniTask
+namespace DepthFirstScheduler
 {
     public interface IScheduler : IDisposable
     {
diff --git a/Scripts/UniTask/Scheduler.cs.meta b/Scripts/DepthFirstScheduler/Scheduler.cs.meta
similarity index 100%
rename from Scripts/UniTask/Scheduler.cs.meta
rename to Scripts/DepthFirstScheduler/Scheduler.cs.meta
diff --git a/Scripts/UniTask/Scheduler.meta b/Scripts/DepthFirstScheduler/Scheduler.meta
similarity index 100%
rename from Scripts/UniTask/Scheduler.meta
rename to Scripts/DepthFirstScheduler/Scheduler.meta
diff --git a/Scripts/UniTask/Scheduler/CurrentThreadScheduler.cs b/Scripts/DepthFirstScheduler/Scheduler/CurrentThreadScheduler.cs
similarity index 98%
rename from Scripts/UniTask/Scheduler/CurrentThreadScheduler.cs
rename to Scripts/DepthFirstScheduler/Scheduler/CurrentThreadScheduler.cs
index 2d6c00161..2fa03e26b 100644
--- a/Scripts/UniTask/Scheduler/CurrentThreadScheduler.cs
+++ b/Scripts/DepthFirstScheduler/Scheduler/CurrentThreadScheduler.cs
@@ -2,7 +2,7 @@
 using System.Collections;
 using System.Collections.Generic;
 
-namespace UniTask
+namespace DepthFirstScheduler
 {
     public static partial class Scheduler
     {
diff --git a/Scripts/UniTask/Scheduler/CurrentThreadScheduler.cs.meta b/Scripts/DepthFirstScheduler/Scheduler/CurrentThreadScheduler.cs.meta
similarity index 100%
rename from Scripts/UniTask/Scheduler/CurrentThreadScheduler.cs.meta
rename to Scripts/DepthFirstScheduler/Scheduler/CurrentThreadScheduler.cs.meta
diff --git a/Scripts/UniTask/Scheduler/StepScheduler.cs b/Scripts/DepthFirstScheduler/Scheduler/StepScheduler.cs
similarity index 97%
rename from Scripts/UniTask/Scheduler/StepScheduler.cs
rename to Scripts/DepthFirstScheduler/Scheduler/StepScheduler.cs
index 76248017c..e5406ebe0 100644
--- a/Scripts/UniTask/Scheduler/StepScheduler.cs
+++ b/Scripts/DepthFirstScheduler/Scheduler/StepScheduler.cs
@@ -1,4 +1,4 @@
-namespace UniTask
+namespace DepthFirstScheduler
 {
     public static partial class Scheduler
     {
diff --git a/Scripts/UniTask/Scheduler/StepScheduler.cs.meta b/Scripts/DepthFirstScheduler/Scheduler/StepScheduler.cs.meta
similarity index 100%
rename from Scripts/UniTask/Scheduler/StepScheduler.cs.meta
rename to Scripts/DepthFirstScheduler/Scheduler/StepScheduler.cs.meta
diff --git a/Scripts/UniTask/Scheduler/ThreadPoolScheduler.cs b/Scripts/DepthFirstScheduler/Scheduler/ThreadPoolScheduler.cs
similarity index 97%
rename from Scripts/UniTask/Scheduler/ThreadPoolScheduler.cs
rename to Scripts/DepthFirstScheduler/Scheduler/ThreadPoolScheduler.cs
index 94e6316e7..6c2dbea93 100644
--- a/Scripts/UniTask/Scheduler/ThreadPoolScheduler.cs
+++ b/Scripts/DepthFirstScheduler/Scheduler/ThreadPoolScheduler.cs
@@ -1,6 +1,6 @@
 using System;
 
-namespace UniTask
+namespace DepthFirstScheduler
 {
     public static partial class Scheduler
     {
diff --git a/Scripts/UniTask/Scheduler/ThreadPoolScheduler.cs.meta b/Scripts/DepthFirstScheduler/Scheduler/ThreadPoolScheduler.cs.meta
similarity index 100%
rename from Scripts/UniTask/Scheduler/ThreadPoolScheduler.cs.meta
rename to Scripts/DepthFirstScheduler/Scheduler/ThreadPoolScheduler.cs.meta
diff --git a/Scripts/UniTask/Scheduler/ThreadScheduler.cs b/Scripts/DepthFirstScheduler/Scheduler/ThreadScheduler.cs
similarity index 99%
rename from Scripts/UniTask/Scheduler/ThreadScheduler.cs
rename to Scripts/DepthFirstScheduler/Scheduler/ThreadScheduler.cs
index 60c425bba..0c44c5507 100644
--- a/Scripts/UniTask/Scheduler/ThreadScheduler.cs
+++ b/Scripts/DepthFirstScheduler/Scheduler/ThreadScheduler.cs
@@ -1,7 +1,7 @@
 using System;
 using System.Threading;
 
-namespace UniTask
+namespace DepthFirstScheduler
 {
     public static partial class Scheduler
     {
diff --git a/Scripts/UniTask/Scheduler/ThreadScheduler.cs.meta b/Scripts/DepthFirstScheduler/Scheduler/ThreadScheduler.cs.meta
similarity index 100%
rename from Scripts/UniTask/Scheduler/ThreadScheduler.cs.meta
rename to Scripts/DepthFirstScheduler/Scheduler/ThreadScheduler.cs.meta
diff --git a/Scripts/UniTask/TaskChain.cs b/Scripts/DepthFirstScheduler/TaskChain.cs
similarity index 95%
rename from Scripts/UniTask/TaskChain.cs
rename to Scripts/DepthFirstScheduler/TaskChain.cs
index 89b93cfe0..7928e5bd6 100644
--- a/Scripts/UniTask/TaskChain.cs
+++ b/Scripts/DepthFirstScheduler/TaskChain.cs
@@ -3,7 +3,7 @@ using System.Linq;
 using System.Collections.Generic;
 
 
-namespace UniTask
+namespace DepthFirstScheduler
 {
     public enum ChainStatus
     {
diff --git a/Scripts/UniTask/TaskChain.cs.meta b/Scripts/DepthFirstScheduler/TaskChain.cs.meta
similarity index 100%
rename from Scripts/UniTask/TaskChain.cs.meta
rename to Scripts/DepthFirstScheduler/TaskChain.cs.meta
diff --git a/Scripts/UniTask/Unit.cs b/Scripts/DepthFirstScheduler/Unit.cs
similarity index 91%
rename from Scripts/UniTask/Unit.cs
rename to Scripts/DepthFirstScheduler/Unit.cs
index 96e5194d1..c3a041d1e 100644
--- a/Scripts/UniTask/Unit.cs
+++ b/Scripts/DepthFirstScheduler/Unit.cs
@@ -1,6 +1,6 @@
 using System;
 
-namespace UniTask
+namespace DepthFirstScheduler
 {
     [Serializable]
     public struct Unit : IEquatable<Unit>
diff --git a/Scripts/UniTask/Unit.cs.meta b/Scripts/DepthFirstScheduler/Unit.cs.meta
similarity index 100%
rename from Scripts/UniTask/Unit.cs.meta
rename to Scripts/DepthFirstScheduler/Unit.cs.meta
diff --git a/Scripts/Format/VRMImporter.cs b/Scripts/Format/VRMImporter.cs
index 5618a16d2..e0c2352f4 100644
--- a/Scripts/Format/VRMImporter.cs
+++ b/Scripts/Format/VRMImporter.cs
@@ -5,7 +5,7 @@ using UnityEngine;
 using UniGLTF;
 using System.Collections.Generic;
 using System.Collections;
-using UniTask;
+using DepthFirstScheduler;
 #if (NET_4_6 && UNITY_2017_1_OR_NEWER)
 using System.Threading.Tasks;
 #endif
@@ -414,17 +414,14 @@ namespace VRM
 
         private static Schedulable<GameObject> LoadVrmAsyncInternal(VRMImporterContext ctx, bool show)
         {
-            var schedulable = Schedulable.Create();
-
-            return schedulable
+            return Schedulable.Create()
                 .AddTask(Scheduler.ThreadPool, () =>
                 {
                     return glTF_VRM_Material.Parse(ctx.Json);
                 })
-                .ContinueWith(Scheduler.MainThread, x =>
+                .ContinueWith(Scheduler.MainThread, gltfMaterials =>
                 {
-                    // material function
-                    ctx.MaterialImporter = new VRMMaterialImporter(ctx, x);
+                    ctx.MaterialImporter = new VRMMaterialImporter(ctx, gltfMaterials);
                 })
                 .OnExecute(Scheduler.ThreadPool, parent =>
                 {