diff --git a/app/src/main/kotlin/jackall/overlaymulticounter/activity/MainActivity.kt b/app/src/main/kotlin/jackall/overlaymulticounter/activity/MainActivity.kt
index f376290..99c8992 100644
--- a/app/src/main/kotlin/jackall/overlaymulticounter/activity/MainActivity.kt
+++ b/app/src/main/kotlin/jackall/overlaymulticounter/activity/MainActivity.kt
@@ -4,7 +4,9 @@
 import android.os.Bundle
 import android.support.v7.app.AppCompatActivity
 import jackall.overlaymulticounter.R
+import jackall.overlaymulticounter.db.CounterRealmHelper
 import jackall.overlaymulticounter.service.MainService
+import jackall.overlaymulticounter.vo.Counter
 
 class MainActivity : AppCompatActivity() {
 
@@ -12,6 +14,14 @@
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
 
+        if (CounterRealmHelper().getNextId() == 0) {
+            CounterRealmHelper().insert(
+                    Counter(CounterRealmHelper().getNextId(),
+                            "カウンター1",
+                            0)
+            )
+        }
+
         // TODO: RuntimePermissionの処理
         startService(Intent(this, MainService::class.java))
     }