diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index edb0347..2d97e40 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -9,7 +9,7 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
-        <activity android:name=".MainActivity">
+        <activity android:name=".ui.MainActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
diff --git a/app/src/main/java/j4ckall/rxflux/App.java b/app/src/main/java/j4ckall/rxflux/App.java
new file mode 100644
index 0000000..381edd7
--- /dev/null
+++ b/app/src/main/java/j4ckall/rxflux/App.java
@@ -0,0 +1,30 @@
+package j4ckall.rxflux;
+
+import android.app.Application;
+
+import j4ckall.rxflux.lib.flux.Dispatcher;
+
+/**
+ * Application Class
+ *
+ * @author matsumoto_k
+ */
+public class App extends Application {
+
+    private static App instance = null;
+    private static final Dispatcher dispatcher = new Dispatcher();
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        instance = this;
+    }
+
+    public static App get() {
+        return instance;
+    }
+
+    public static Dispatcher getDispatcher() {
+        return dispatcher;
+    }
+}
diff --git a/app/src/main/java/j4ckall/rxflux/MainActivity.java b/app/src/main/java/j4ckall/rxflux/MainActivity.java
deleted file mode 100644
index 058c091..0000000
--- a/app/src/main/java/j4ckall/rxflux/MainActivity.java
+++ /dev/null
@@ -1,13 +0,0 @@
-package j4ckall.rxflux;
-
-import android.support.v7.app.AppCompatActivity;
-import android.os.Bundle;
-
-public class MainActivity extends AppCompatActivity {
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_main);
-    }
-}
diff --git a/app/src/main/java/j4ckall/rxflux/ui/MainAction.java b/app/src/main/java/j4ckall/rxflux/ui/MainAction.java
new file mode 100644
index 0000000..0345719
--- /dev/null
+++ b/app/src/main/java/j4ckall/rxflux/ui/MainAction.java
@@ -0,0 +1,14 @@
+package j4ckall.rxflux.ui;
+
+import j4ckall.rxflux.lib.flux.Action;
+
+/**
+ * MainActivityのAction
+ *
+ * @author matsumoto_k
+ */
+public enum MainAction implements Action.Key {
+    COUNT_UP,
+    COUNT_DOWN,
+    INITIALIZE
+}
diff --git a/app/src/main/java/j4ckall/rxflux/ui/MainActionCreater.java b/app/src/main/java/j4ckall/rxflux/ui/MainActionCreater.java
new file mode 100644
index 0000000..53cd302
--- /dev/null
+++ b/app/src/main/java/j4ckall/rxflux/ui/MainActionCreater.java
@@ -0,0 +1,28 @@
+package j4ckall.rxflux.ui;
+
+import j4ckall.rxflux.App;
+import j4ckall.rxflux.lib.flux.ActionCreater;
+
+/**
+ * MainActivityのActionを生成するクラス
+ *
+ * @author matsumoto_k
+ */
+public class MainActionCreater extends ActionCreater {
+
+    public MainActionCreater() {
+        super(App.getDispatcher());
+    }
+
+    public void countUp(int num) {
+        dispatch(MainAction.COUNT_UP, num);
+    }
+
+    public void countDown(int num) {
+        dispatch(MainAction.COUNT_DOWN, num);
+    }
+
+    public void initialize(int num) {
+        dispatch(MainAction.INITIALIZE, num);
+    }
+}
diff --git a/app/src/main/java/j4ckall/rxflux/ui/MainActivity.java b/app/src/main/java/j4ckall/rxflux/ui/MainActivity.java
new file mode 100644
index 0000000..cde3c29
--- /dev/null
+++ b/app/src/main/java/j4ckall/rxflux/ui/MainActivity.java
@@ -0,0 +1,35 @@
+package j4ckall.rxflux.ui;
+
+import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
+import android.widget.TextView;
+
+import j4ckall.rxflux.R;
+
+public class MainActivity extends AppCompatActivity {
+
+    private MainStore mainStore = new MainStore();
+    private MainActionCreater mainActionCreater = new MainActionCreater();
+    private TextView countText = null;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+        countText = findViewById(R.id.text_count);
+
+        findViewById(R.id.btn_plus).setOnClickListener(__ -> {
+            mainActionCreater.countUp(1);
+        });
+
+        findViewById(R.id.btn_minus).setOnClickListener(__ -> {
+            mainActionCreater.countDown(1);
+        });
+
+        mainStore.observeOnMainThread(action -> {
+            countText.setText(mainStore.getCount().toString());
+        });
+
+        mainActionCreater.initialize(0);
+    }
+}
diff --git a/app/src/main/java/j4ckall/rxflux/ui/MainStore.java b/app/src/main/java/j4ckall/rxflux/ui/MainStore.java
new file mode 100644
index 0000000..259e5bb
--- /dev/null
+++ b/app/src/main/java/j4ckall/rxflux/ui/MainStore.java
@@ -0,0 +1,35 @@
+package j4ckall.rxflux.ui;
+
+import j4ckall.rxflux.App;
+import j4ckall.rxflux.lib.flux.Store;
+
+/**
+ * MainActivityの状態を保持するクラス
+ *
+ * @author matsumoto_k
+ */
+public class MainStore extends Store {
+
+    private int count;
+    private boolean initialize = false;
+
+    public MainStore() {
+        super(App.getDispatcher());
+
+        on(MainAction.COUNT_UP, action -> {
+            count += (Integer) action.value;
+        });
+
+        on(MainAction.COUNT_DOWN, action -> {
+            count -= (Integer) action.value;
+        });
+
+        on(MainAction.INITIALIZE, action -> {
+            count = (Integer) action.value;
+        });
+    }
+
+    public Integer getCount() {
+        return count;
+    }
+}
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index dff2b3f..8d342f8 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -4,7 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context="j4ckall.rxflux.MainActivity">
+    tools:context="j4ckall.rxflux.ui.MainActivity">
 
     <TextView
         android:id="@+id/text_count"