diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 0971d0c..52d181a 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -2,6 +2,8 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="jackall.overlaymulticounter">
 
+    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
+
     <application
         android:name=".App"
         android:allowBackup="true"
diff --git a/app/src/main/kotlin/jackall/overlaymulticounter/Const.kt b/app/src/main/kotlin/jackall/overlaymulticounter/Const.kt
index 2ea1ae2..811c0d5 100644
--- a/app/src/main/kotlin/jackall/overlaymulticounter/Const.kt
+++ b/app/src/main/kotlin/jackall/overlaymulticounter/Const.kt
@@ -7,5 +7,7 @@
     companion object {
         const val serviceChannelId = "mainService"
         const val serviceNotificationId = 1
+        const val moveButtonActiveAlpha = 1f
+        const val moveButtonInactiveAlpha = 0.7f
     }
 }
\ No newline at end of file
diff --git a/app/src/main/kotlin/jackall/overlaymulticounter/common/PreferenceKeys.kt b/app/src/main/kotlin/jackall/overlaymulticounter/common/PreferenceKeys.kt
index 1bcbe27..573fd4f 100644
--- a/app/src/main/kotlin/jackall/overlaymulticounter/common/PreferenceKeys.kt
+++ b/app/src/main/kotlin/jackall/overlaymulticounter/common/PreferenceKeys.kt
@@ -6,4 +6,6 @@
  * Created by matsumoto_k on 2017/11/08.
  */
 enum class PreferenceKeys(val preferenceNames: PreferenceNames, val valueClass: Class<*>, val key: String) {
+    VIEWX(PreferenceNames.CONFIG, Int::class.java, "viewX"),
+    VIEWY(PreferenceNames.CONFIG, Int::class.java, "viewY")
 }
\ No newline at end of file
diff --git a/app/src/main/kotlin/jackall/overlaymulticounter/service/MainService.kt b/app/src/main/kotlin/jackall/overlaymulticounter/service/MainService.kt
index 666ca47..cd84918 100644
--- a/app/src/main/kotlin/jackall/overlaymulticounter/service/MainService.kt
+++ b/app/src/main/kotlin/jackall/overlaymulticounter/service/MainService.kt
@@ -2,26 +2,129 @@
 
 import android.app.PendingIntent
 import android.app.Service
+import android.content.Context
 import android.content.Intent
+import android.graphics.PixelFormat
+import android.graphics.Point
+import android.os.Build
 import android.os.IBinder
 import android.support.v4.app.NotificationCompat
+import android.view.*
 import jackall.overlaymulticounter.Const
 import jackall.overlaymulticounter.R
 import jackall.overlaymulticounter.activity.MainActivity
+import jackall.overlaymulticounter.common.PreferenceKeys
+import jackall.overlaymulticounter.common.PreferenceNames
+import jackall.overlaymulticounter.utils.MySharedPref
+import kotlinx.android.synthetic.main.overlay_move.view.*
 
 /**
  * Created by matsumoto_k on 2017/11/08.
  */
 class MainService : Service() {
 
+    val mySharedPref by lazy { MySharedPref(this, PreferenceNames.CONFIG) }
+    val overlayMoveView: ViewGroup by lazy { LayoutInflater.from(this).inflate(R.layout.overlay_move, null) as ViewGroup }
+    var overlayMoveViewParams: WindowManager.LayoutParams? = null
+    val windowManager: WindowManager by lazy { applicationContext.getSystemService(Context.WINDOW_SERVICE) as WindowManager }
+    val displaySize: Point by lazy {
+        val display = windowManager.defaultDisplay
+        val size = Point()
+        display.getSize(size)
+        size
+    }
+    var isLongClick: Boolean = false
+
+
     override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
         val notificationBuilder = NotificationCompat.Builder(this, Const.serviceChannelId)
                 .setSmallIcon(R.mipmap.ic_launcher) // TODO:白抜きのアイコンをセット
         notificationBuilder.setContentIntent(PendingIntent.getActivity(this, 0, Intent(this, MainActivity::class.java), PendingIntent.FLAG_UPDATE_CURRENT))
         startForeground(Const.serviceNotificationId, notificationBuilder.build())
+
+        setMoveViewConfig()
+        showMoveView()
+
         return START_STICKY
     }
 
+    fun showMoveView() {
+        overlayMoveViewParams?.x = mySharedPref.getValue(PreferenceKeys.VIEWX, Int::class.java, 0) as Int
+        overlayMoveViewParams?.y = mySharedPref.getValue(PreferenceKeys.VIEWY, Int::class.java, 0) as Int
+
+        windowManager.addView(overlayMoveView, overlayMoveViewParams)
+    }
+
+    fun setMoveViewConfig() {
+        overlayMoveView.apply(setMoveViewClickListener())
+
+        if (Build.VERSION.SDK_INT >= 26) {
+            overlayMoveViewParams = WindowManager.LayoutParams(
+                    WindowManager.LayoutParams.WRAP_CONTENT,
+                    WindowManager.LayoutParams.WRAP_CONTENT,
+                    WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY,
+                    WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE or
+                            WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN or
+                            WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL or
+                            WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,
+                    PixelFormat.TRANSLUCENT)
+        } else {
+            overlayMoveViewParams = WindowManager.LayoutParams(
+                    WindowManager.LayoutParams.WRAP_CONTENT,
+                    WindowManager.LayoutParams.WRAP_CONTENT,
+                    WindowManager.LayoutParams.TYPE_SYSTEM_ALERT,
+                    WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE or
+                            WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN or
+                            WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL or
+                            WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,
+                    PixelFormat.TRANSLUCENT)
+        }
+    }
+
+    private fun setMoveViewClickListener(): View.() -> Unit {
+        return {
+            setOnLongClickListener { view ->
+                isLongClick = true
+                view.move_button.alpha = Const.moveButtonActiveAlpha
+                false
+            }.apply {
+                setOnTouchListener { view, motionEvent ->
+
+                    val x = motionEvent.rawX.toInt()
+                    val y = motionEvent.rawY.toInt()
+
+                    when (motionEvent.action) {
+
+                        MotionEvent.ACTION_MOVE -> {
+                            if (isLongClick) {
+
+                                val centerX = x - (displaySize.x / 2)
+                                val centerY = y - (displaySize.y / 2)
+
+                                overlayMoveViewParams?.x = centerX
+                                overlayMoveViewParams?.y = centerY
+
+                                windowManager.updateViewLayout(overlayMoveView, overlayMoveViewParams)
+                            }
+                        }
+
+                        MotionEvent.ACTION_UP -> {
+                            if (isLongClick) {
+                                view.move_button.alpha = Const.moveButtonInactiveAlpha
+                                mySharedPref.putValue(PreferenceKeys.VIEWX, Int::class.java, overlayMoveViewParams?.x ?: 0)
+                                mySharedPref.putValue(PreferenceKeys.VIEWY, Int::class.java, overlayMoveViewParams?.y ?: 0)
+                            } else {
+
+                            }
+                            isLongClick = false
+                        }
+                    }
+                    false
+                }
+            }
+        }
+    }
+
     override fun onBind(intent: Intent?): IBinder? {
         return null
     }
diff --git a/app/src/main/res/drawable/overlay_move_button.png b/app/src/main/res/drawable/overlay_move_button.png
new file mode 100644
index 0000000..9ce316d
--- /dev/null
+++ b/app/src/main/res/drawable/overlay_move_button.png
Binary files differ
diff --git a/app/src/main/res/layout/overlay_move.xml b/app/src/main/res/layout/overlay_move.xml
new file mode 100644
index 0000000..3197c96
--- /dev/null
+++ b/app/src/main/res/layout/overlay_move.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="@dimen/overlay_move_button_size"
+    android:layout_height="@dimen/overlay_move_button_size">
+
+    <ImageView
+        android:id="@+id/move_button"
+        android:layout_width="@dimen/overlay_move_button_size"
+        android:layout_height="@dimen/overlay_move_button_size"
+        android:alpha="0.7"
+        android:src="@drawable/overlay_move_button" />
+
+</FrameLayout>
\ No newline at end of file
diff --git a/app/src/main/res/values/dimens.xml b/app/src/main/res/values/dimens.xml
new file mode 100644
index 0000000..b42e21a
--- /dev/null
+++ b/app/src/main/res/values/dimens.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <dimen name="overlay_move_button_size">48dp</dimen>
+</resources>
\ No newline at end of file