diff --git a/sjplayer/src/sjplayer/Actor.d b/sjplayer/src/sjplayer/Actor.d
index 74ab72f..3b64c93 100644
--- a/sjplayer/src/sjplayer/Actor.d
+++ b/sjplayer/src/sjplayer/Actor.d
@@ -93,8 +93,7 @@ class ActorProgram {
     verts_ = ArrayBuffer.Create();
 
     vao_.Bind();
-    VertexArrayAttacher attacher;
-    with (attacher) {
+    with (VertexArrayAttacher()) {
       index     = 0;
       type      = GL_FLOAT;
       dimension = 2;
@@ -102,8 +101,7 @@ class ActorProgram {
     }
 
     verts_.Bind();
-    ArrayBufferAllocator verts_allocator;
-    with (verts_allocator) {
+    with (ArrayBufferAllocator()) {
       const v = [vec2(-1, 1), vec2(1, 1), vec2(1, -1), vec2(-1, -1),];
       data  = v.ptr;
       size  = typeof(v[0]).sizeof * v.length;
diff --git a/sjplayer/src/sjplayer/Background.d b/sjplayer/src/sjplayer/Background.d
index 0d77129..4082311 100644
--- a/sjplayer/src/sjplayer/Background.d
+++ b/sjplayer/src/sjplayer/Background.d
@@ -72,8 +72,7 @@ class BackgroundProgram {
     verts_ = ArrayBuffer.Create();
 
     vao_.Bind();
-    VertexArrayAttacher attacher;
-    with (attacher) {
+    with (VertexArrayAttacher()) {
       index     = 0;
       type      = GL_FLOAT;
       dimension = 2;
@@ -81,8 +80,7 @@ class BackgroundProgram {
     }
 
     verts_.Bind();
-    ArrayBufferAllocator verts_allocator;
-    with (verts_allocator) {
+    with (ArrayBufferAllocator()) {
       const v = [vec2(-1, 1), vec2(1, 1), vec2(1, -1), vec2(-1, -1),];
       data  = v.ptr;
       size  = typeof(v[0]).sizeof * v.length;
diff --git a/sjplayer/src/sjplayer/CircleElement.d b/sjplayer/src/sjplayer/CircleElement.d
index cfacf65..b801555 100644
--- a/sjplayer/src/sjplayer/CircleElement.d
+++ b/sjplayer/src/sjplayer/CircleElement.d
@@ -152,8 +152,7 @@ class CircleElementProgram {
   ///
   void SetupVertexArray(ref VertexArrayRef vao,
       ref ArrayBufferRef verts, ref ArrayBufferRef instances) {
-    VertexArrayAttacher attacher;
-    with (attacher) {
+    with (VertexArrayAttacher()) {
       // verts
       type      = GL_FLOAT;
       dimension = 2;
diff --git a/sjplayer/src/sjplayer/ElementDrawer.d b/sjplayer/src/sjplayer/ElementDrawer.d
index a34eaea..d053e4c 100644
--- a/sjplayer/src/sjplayer/ElementDrawer.d
+++ b/sjplayer/src/sjplayer/ElementDrawer.d
@@ -30,8 +30,7 @@ class ElementDrawer(Program, Element, vec2[] vertices) :
     program_.SetupVertexArray(vao_, verts_, instances_);
 
     verts_.Bind();
-    ArrayBufferAllocator verts_allocator;
-    with (verts_allocator) {
+    with (ArrayBufferAllocator()) {
       const v = vertices;  // place to memory
 
       data  = v.ptr;
@@ -41,8 +40,7 @@ class ElementDrawer(Program, Element, vec2[] vertices) :
     }
 
     instances_.Bind();
-    ArrayBufferAllocator instance_allocator;
-    with (instance_allocator) {
+    with (ArrayBufferAllocator()) {
       size  = Instance.sizeof * elements.length;
       usage = GL_DYNAMIC_DRAW;
       Allocate(instances_);
diff --git a/sjplayer/src/sjplayer/PostEffect.d b/sjplayer/src/sjplayer/PostEffect.d
index 70d1f08..15274f0 100644
--- a/sjplayer/src/sjplayer/PostEffect.d
+++ b/sjplayer/src/sjplayer/PostEffect.d
@@ -30,8 +30,7 @@ class PostEffect {
     tex_     = TextureRect.Create();
     sampler_ = Sampler.Create();
 
-    TextureRectAllocator allocator;
-    with (allocator) {
+    with (TextureRectAllocator()) {
       internalFormat = GL_RGB;
       size           = sz;
       format         = GL_RED;
@@ -40,8 +39,7 @@ class PostEffect {
       Allocate(tex_);
     }
 
-    SamplerConfigurer configurer;
-    with (configurer) {
+    with (SamplerConfigurer()) {
       filterMin = GL_NEAREST;
       filterMag = GL_NEAREST;
       Configure(sampler_);
@@ -152,8 +150,7 @@ class PostEffectProgram {
     ubo_index_ = gl.GetUniformBlockIndex(program_.id, "Instance".toStringz);
 
     vao_.Bind();
-    VertexArrayAttacher attacher;
-    with (attacher) {
+    with (VertexArrayAttacher()) {
       index     = 0;
       type      = GL_FLOAT;
       dimension = 2;
@@ -161,8 +158,7 @@ class PostEffectProgram {
     }
 
     verts_.Bind();
-    ArrayBufferAllocator verts_allocator;
-    with (verts_allocator) {
+    with (ArrayBufferAllocator()) {
       const v = [vec2(-1, 1), vec2(1, 1), vec2(1, -1), vec2(-1, -1),];
       data  = v.ptr;
       size  = typeof(v[0]).sizeof * v.length;
@@ -171,8 +167,7 @@ class PostEffectProgram {
     }
 
     ubo_.Bind();
-    UniformBufferAllocator ub_allocator;
-    with (ub_allocator) {
+    with (UniformBufferAllocator()) {
       size  = PostEffect.Instance.sizeof;
       usage = GL_DYNAMIC_DRAW;
       Allocate(ubo_);
diff --git a/src/sj/CubeProgram.d b/src/sj/CubeProgram.d
index 06faad4..fbb26e9 100644
--- a/src/sj/CubeProgram.d
+++ b/src/sj/CubeProgram.d
@@ -127,8 +127,7 @@ class CubeProgram {
     material_index_ = gl.GetUniformBlockIndex(program_.id, "Material".toStringz);
 
     material_.Bind();
-    UniformBufferAllocator material_allocator;
-    with (material_allocator) {
+    with (UniformBufferAllocator()) {
       data  = null;
       size  = Material.sizeof;
       usage = GL_DYNAMIC_DRAW;
@@ -140,8 +139,7 @@ class CubeProgram {
     instances_ = ArrayBuffer.Create();
 
     vao_.Bind();
-    VertexArrayAttacher attacher;
-    with (attacher) {
+    with (VertexArrayAttacher()) {
       index     = 0;
       type      = GL_FLOAT;
       offset    = vec3.sizeof * 0;
@@ -175,8 +173,7 @@ class CubeProgram {
     }
 
     verts_.Bind();
-    ArrayBufferAllocator verts_allocator;
-    with (verts_allocator) {
+    with (ArrayBufferAllocator()) {
       enum v = [
         // left
         vec3(-1, 1, -1), vec3(-1,  1,  1), vec3(-1, -1, 1),
@@ -224,8 +221,7 @@ class CubeProgram {
     }
 
     instances_.Bind();
-    ArrayBufferAllocator instances_allocator;
-    with (instances_allocator) {
+    with (ArrayBufferAllocator()) {
       data  = null;
       size  = MaxInstanceCount * mat4.sizeof;
       usage = GL_DYNAMIC_DRAW;
diff --git a/src/sj/SelectScene.d b/src/sj/SelectScene.d
index 6864b4c..a128df5 100644
--- a/src/sj/SelectScene.d
+++ b/src/sj/SelectScene.d
@@ -166,11 +166,13 @@ private class FirstSetupState : AbstractSceneState {
   override UpdateResult Update(KeyInput input) {
     const ratio = anime_.Update();
 
-    owner.lobby_.cube_matrix.rotation += LoadingCubeRotationSpeed * (ratio+0.2);
-    owner.lobby_.cube_interval = cube_interval_ease_.Calculate(ratio);
+    with (owner.lobby_) {
+      cube_matrix.rotation += LoadingCubeRotationSpeed * (ratio+0.2);
+      cube_interval = cube_interval_ease_.Calculate(ratio);
 
-    owner.lobby_.background.inner_color = bg_inner_ease_.Calculate(ratio);
-    owner.lobby_.background.outer_color = bg_outer_ease_.Calculate(ratio);
+      background.inner_color = bg_inner_ease_.Calculate(ratio);
+      background.outer_color = bg_outer_ease_.Calculate(ratio);
+    }
 
     if (anime_.isFinished) {
       stage_appear_state_.Initialize(0);
diff --git a/src/sj/Text.d b/src/sj/Text.d
index 2dc6a80..9d699e5 100644
--- a/src/sj/Text.d
+++ b/src/sj/Text.d
@@ -29,7 +29,6 @@ class Text {
     static assert(TextProgram.Vertex.sizeof == float.sizeof * 5);
 
     vertices_.Bind();
-    ArrayBufferAllocator vertices_allocator;
     with (ArrayBufferAllocator()) {
       size  = text.length * TextProgram.Vertex.sizeof * 4;
       usage = GL_STATIC_DRAW;
@@ -103,8 +102,7 @@ class Text {
     }
 
     texture_.Bind();
-    Texture2DAllocator texture_allocator;
-    with (texture_allocator) {
+    with (Texture2DAllocator()) {
       level          = 0;
       internalFormat = GL_RGBA8;
       data           = pixels.ptr;
@@ -115,8 +113,7 @@ class Text {
     }
 
     indices_.Bind();
-    ElementArrayBufferAllocator indices_allcator;
-    with (indices_allcator) {
+    with (ElementArrayBufferAllocator()) {
       size  = glyph_count * 6 * ushort.sizeof;
       usage = GL_STATIC_DRAW;
       Allocate(indices_);
diff --git a/src/sj/TextProgram.d b/src/sj/TextProgram.d
index 486ac55..74f5d9e 100644
--- a/src/sj/TextProgram.d
+++ b/src/sj/TextProgram.d
@@ -59,8 +59,7 @@ class TextProgram {
     program_.Validate();
 
     sampler_ = Sampler.Create();
-    SamplerConfigurer configurer;
-    with (configurer) {
+    with (SamplerConfigurer()) {
       filterMin = GL_LINEAR;
       filterMag = GL_LINEAR;
       Configure(sampler_);
@@ -70,8 +69,7 @@ class TextProgram {
   ///
   void SetupVertexArray(ref VertexArrayRef vao, ref ArrayBufferRef vertices) {
     vao.Bind();
-    VertexArrayAttacher attacher;
-    with (attacher) {
+    with (VertexArrayAttacher()) {
       index     = 0;
       type      = GL_FLOAT;
       offset    = 0;
diff --git a/src/sj/TitleTextProgram.d b/src/sj/TitleTextProgram.d
index 55e9fa5..07a7e82 100644
--- a/src/sj/TitleTextProgram.d
+++ b/src/sj/TitleTextProgram.d
@@ -99,8 +99,7 @@ class TitleTextProgram {
     tex_     = CreateTextureFromBuffer(ImgBuf);
     sampler_ = Sampler.Create();
 
-    SamplerConfigurer configurer;
-    with (configurer) {
+    with (SamplerConfigurer()) {
       filterMin = GL_LINEAR;
       filterMag = GL_LINEAR;
       Configure(sampler_);
@@ -110,8 +109,7 @@ class TitleTextProgram {
     vertices_ = ArrayBuffer.Create();
 
     vao_.Bind();
-    VertexArrayAttacher attacher;
-    with (attacher) {
+    with (VertexArrayAttacher()) {
       index     = 0;
       type      = GL_FLOAT;
       offset    = 0;
@@ -128,8 +126,7 @@ class TitleTextProgram {
     }
 
     vertices_.Bind();
-    ArrayBufferAllocator allocator;
-    with (allocator) {
+    with (ArrayBufferAllocator()) {
       const v = [
         -1f,  1f, 0f,  1f, 0f,
         -1f, -1f, 0f,  1f, 1f,
diff --git a/src/sj/util/image.d b/src/sj/util/image.d
index 70ba1b5..6afa030 100644
--- a/src/sj/util/image.d
+++ b/src/sj/util/image.d
@@ -23,8 +23,7 @@ Texture2DRef CreateTextureFromImage(sfImage* img) {
   sz.y.isPowerOf2.enforce();
 
   auto tex = Texture2D.Create();
-  Texture2DAllocator allocator;
-  with (allocator) {
+  with (Texture2DAllocator()) {
     level          = 0;
     internalFormat = GL_RGBA8;
     data           = sfImage_getPixelsPtr(img);