diff --git a/app/build.gradle b/app/build.gradle
index 1135d4c..dcdaaeb 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -53,6 +53,9 @@
     implementation "android.arch.lifecycle:runtime:1.0.3"
     implementation "android.arch.lifecycle:extensions:1.0.0-rc1"
     annotationProcessor "android.arch.lifecycle:compiler:1.0.0-rc1"
+
+    // TapTargetView
+    implementation 'com.getkeepsafe.taptargetview:taptargetview:1.10.0'
 }
 
 apply plugin: 'com.google.gms.google-services'
\ No newline at end of file
diff --git a/app/src/main/kotlin/jackall/overlaymulticounter/activity/MainActivity.kt b/app/src/main/kotlin/jackall/overlaymulticounter/activity/MainActivity.kt
index 5ffa979..1c360ef 100644
--- a/app/src/main/kotlin/jackall/overlaymulticounter/activity/MainActivity.kt
+++ b/app/src/main/kotlin/jackall/overlaymulticounter/activity/MainActivity.kt
@@ -2,18 +2,25 @@
 
 import android.arch.lifecycle.ViewModelProviders
 import android.databinding.DataBindingUtil
+import android.graphics.Typeface
 import android.os.Bundle
 import android.support.v7.app.AppCompatActivity
+import com.getkeepsafe.taptargetview.TapTarget
+import com.getkeepsafe.taptargetview.TapTargetView
 import com.google.android.gms.ads.AdSize
 import jackall.overlaymulticounter.Const
 import jackall.overlaymulticounter.R
+import jackall.overlaymulticounter.common.PreferenceKeys
+import jackall.overlaymulticounter.common.PreferenceNames
 import jackall.overlaymulticounter.databinding.ActivityMainBinding
 import jackall.overlaymulticounter.db.CounterRealmHelper
 import jackall.overlaymulticounter.utils.AdUtil
+import jackall.overlaymulticounter.utils.MySharedPref
 import jackall.overlaymulticounter.viewmodel.MainViewModel
 import jackall.overlaymulticounter.vo.Counter
 import kotlinx.android.synthetic.main.activity_main.view.*
 
+
 class MainActivity : AppCompatActivity() {
 
     lateinit var binding: ActivityMainBinding
@@ -40,5 +47,32 @@
         super.onStart()
         AdUtil.startBannerAd(this, binding.root.main_banner_frame, AdSize.BANNER, Const.mainBannerUnitId)
         AdUtil.startInterstitialAd(this)
+        if (MySharedPref(this, PreferenceNames.CONFIG).getValue(PreferenceKeys.initialOverlay, Boolean::class.java, true) as Boolean) {
+            TapTargetView.showFor(this, // `this` is an Activity
+                    TapTarget.forView(findViewById(R.id.main_service_button),
+                            resources.getString(R.string.target_title),
+                            resources.getString(R.string.target_text))
+                            // All options below are optional
+                            .outerCircleColor(R.color.outer_circle_color)
+                            .outerCircleAlpha(0.96f)
+                            .targetCircleColor(R.color.target_circle_color)
+                            .titleTextSize(24)
+                            .descriptionTextSize(20)
+                            .descriptionTextColor(R.color.target_description_color)
+                            .textColor(R.color.target_text_color)
+                            .textTypeface(Typeface.SANS_SERIF)
+                            .dimColor(R.color.target_dim_color)
+                            .drawShadow(true)
+                            .cancelable(false)
+                            .tintTarget(true)
+                            .transparentTarget(true)
+                            .targetRadius(50),
+                    object : TapTargetView.Listener() {
+                        override fun onTargetClick(view: TapTargetView) {
+                            super.onTargetClick(view)
+                            binding.root.main_service_button.callOnClick()
+                        }
+                    })
+        }
     }
 }
diff --git a/app/src/main/kotlin/jackall/overlaymulticounter/common/PreferenceKeys.kt b/app/src/main/kotlin/jackall/overlaymulticounter/common/PreferenceKeys.kt
index a14910e..1521d8f 100644
--- a/app/src/main/kotlin/jackall/overlaymulticounter/common/PreferenceKeys.kt
+++ b/app/src/main/kotlin/jackall/overlaymulticounter/common/PreferenceKeys.kt
@@ -8,5 +8,6 @@
 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"),
-    interstitialCount(PreferenceNames.CONFIG,Int::class.java,"intersititialCount")
+    interstitialCount(PreferenceNames.CONFIG, Int::class.java, "intersititialCount"),
+    initialOverlay(PreferenceNames.CONFIG, Boolean::class.java, "initialOverlay")
 }
\ 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 46c82a7..8438583 100644
--- a/app/src/main/kotlin/jackall/overlaymulticounter/service/MainService.kt
+++ b/app/src/main/kotlin/jackall/overlaymulticounter/service/MainService.kt
@@ -52,6 +52,7 @@
 
 
     override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+        mySharedPref.putValue(PreferenceKeys.initialOverlay, Boolean::class.java, false)
         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))
diff --git a/app/src/main/kotlin/jackall/overlaymulticounter/utils/BitmapUtil.kt b/app/src/main/kotlin/jackall/overlaymulticounter/utils/BitmapUtil.kt
new file mode 100644
index 0000000..eac83f0
--- /dev/null
+++ b/app/src/main/kotlin/jackall/overlaymulticounter/utils/BitmapUtil.kt
@@ -0,0 +1,22 @@
+package jackall.overlaymulticounter.utils
+
+import android.graphics.Bitmap
+import android.view.View
+
+/**
+ * Created by matsumoto_k on 2017/11/10.
+ */
+class BitmapUtil {
+    companion object {
+        /**
+         * viewをBitmapに変換する
+         * @param view BitmapにしたいView
+         * @return Bitmap
+         */
+        fun viewCapture(view: View): Bitmap {
+            view.isDrawingCacheEnabled = true
+            view.destroyDrawingCache()
+            return view.drawingCache
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/kotlin/jackall/overlaymulticounter/viewmodel/MainViewModel.kt b/app/src/main/kotlin/jackall/overlaymulticounter/viewmodel/MainViewModel.kt
index 0ffc3de..6955adc 100644
--- a/app/src/main/kotlin/jackall/overlaymulticounter/viewmodel/MainViewModel.kt
+++ b/app/src/main/kotlin/jackall/overlaymulticounter/viewmodel/MainViewModel.kt
@@ -68,12 +68,12 @@
             }
         } else {
             AlertDialog.Builder(view.context)
-                    .setMessage("常駐機能を使用するには権限の許可が必要です。")
-                    .setPositiveButton("設定", DialogInterface.OnClickListener { dialog, which ->
+                    .setMessage(view.context.getString(R.string.permit_overlay))
+                    .setPositiveButton(view.context.getString(R.string.setting), DialogInterface.OnClickListener { dialog, which ->
                         val intent = Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION, Uri.parse("package:jackall.overlaymulticounter"))
                         (view.context as Activity).startActivityForResult(intent, 0)
                     })
-                    .setNegativeButton("許可しない", null)
+                    .setNegativeButton(view.context.getString(R.string.cancel), null)
                     .show()
         }
     }
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 0aeccc4..41fa719 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -88,6 +88,7 @@
                 android:text="@string/overlay_minimization" />
 
             <ImageButton
+                android:id="@+id/main_service_button"
                 android:layout_width="0dp"
                 android:layout_height="match_parent"
                 android:layout_marginEnd="8dp"
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index e9379f0..b4852ae 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -5,4 +5,10 @@
     <color name="colorAccent">#0084ff</color>
 
     <color name="main_text_color">#ba000000</color>
+    <color name="target_circle_color">#ffffff</color>
+    <color name="outer_circle_color">#0080ff</color>
+    <color name="target_title_color">#ffff00</color>
+    <color name="target_description_color">#0000ff</color>
+    <color name="target_dim_color">#000000</color>
+    <color name="target_text_color">#ffffff</color>
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 15e3643..14d446b 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -8,4 +8,9 @@
     <string name="plus">+</string>
     <string name="minus">-</string>
     <string name="reset">RESET</string>
+    <string name="target_title">Drawing multi counter over other apps</string>
+    <string name="target_text">This button is a start and end button.\nTo minimize, press the close button on the left side of it.\nMinimized button can be moved by long pressing.</string>
+    <string name="permit_overlay">Please permit drawing over other apps</string>
+    <string name="setting">Setting</string>
+    <string name="cancel">Cancel</string>
 </resources>