diff --git a/app/src/main/assets/data.json b/app/src/main/assets/data.json
index a3cb0d7..2f2622d 100644
--- a/app/src/main/assets/data.json
+++ b/app/src/main/assets/data.json
@@ -207,5 +207,22 @@
       "name": "常闇の神殿(秋の間)",
       "rank": 19
     }
+  ],
+  "grade": [
+    {
+      "id": 0,
+      "name": "特級L",
+      "rank": 0
+    },
+    {
+      "id": 1,
+      "name": "特級M",
+      "rank": 1
+    },
+    {
+      "id": 2,
+      "name": "特級",
+      "rank": 2
+    }
   ]
 }
diff --git a/app/src/main/kotlin/jackall/moncalc/activity/MainActivity.kt b/app/src/main/kotlin/jackall/moncalc/activity/MainActivity.kt
index 6d5e1e7..6a76cec 100644
--- a/app/src/main/kotlin/jackall/moncalc/activity/MainActivity.kt
+++ b/app/src/main/kotlin/jackall/moncalc/activity/MainActivity.kt
@@ -12,6 +12,7 @@
 import jackall.moncalc.common.PreferenceKeys
 import jackall.moncalc.common.PreferenceNames
 import jackall.moncalc.db.FruitRealmHelper
+import jackall.moncalc.db.GradeRealmHelper
 import jackall.moncalc.db.TempleRealmHelper
 import jackall.moncalc.service.MainService
 import jackall.moncalc.utils.MySharedPref
@@ -25,6 +26,7 @@
     val mySharedPref by lazy { MySharedPref(this, PreferenceNames.CONFIG) }
     val fruitRealmHelper by lazy { FruitRealmHelper() }
     val templeRealmHelper by lazy { TempleRealmHelper() }
+    val gradeRealmHelper by lazy { GradeRealmHelper() }
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -39,6 +41,7 @@
 
             fruitRealmHelper.update(monstData.fruit)
             templeRealmHelper.update(monstData.temple)
+            gradeRealmHelper.update(monstData.grade)
 
             mySharedPref.putValue(PreferenceKeys.QUESTDATAVERSION, Int::class.java, Const.questDataVersion)
 
diff --git a/app/src/main/kotlin/jackall/moncalc/db/GradeRealmHelper.kt b/app/src/main/kotlin/jackall/moncalc/db/GradeRealmHelper.kt
new file mode 100644
index 0000000..17f9785
--- /dev/null
+++ b/app/src/main/kotlin/jackall/moncalc/db/GradeRealmHelper.kt
@@ -0,0 +1,45 @@
+package jackall.moncalc.db
+
+import io.realm.RealmResults
+import jackall.moncalc.vo.Grade
+
+/**
+ * Created by matsumoto_k on 2017/11/03.
+ */
+class GradeRealmHelper : RealmHelper<Grade>() {
+    override fun insert(realmObject: Grade) {
+        realm.executeTransaction {
+            realm.copyToRealm(realmObject)
+        }
+    }
+
+    override fun insert(realmObject: List<Grade>) {
+        realm.executeTransaction {
+            realm.copyToRealm(realmObject)
+        }
+    }
+
+    override fun update(realmObject: Grade) {
+        realm.executeTransaction {
+            realm.copyToRealmOrUpdate(realmObject)
+        }
+    }
+
+    override fun update(realmObjects: List<Grade>) {
+        realm.executeTransaction {
+            realm.copyToRealmOrUpdate(realmObjects)
+        }
+    }
+
+    override fun findAll(): RealmResults<Grade> {
+        return realm.where(Grade::class.java).findAll()
+    }
+
+    fun findNames(): List<String> {
+        val results = ArrayList<String>()
+        realm.where(Grade::class.java).findAll().forEach {
+            results.add(it.name)
+        }
+        return results
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/kotlin/jackall/moncalc/vo/Grade.kt b/app/src/main/kotlin/jackall/moncalc/vo/Grade.kt
new file mode 100644
index 0000000..49219e6
--- /dev/null
+++ b/app/src/main/kotlin/jackall/moncalc/vo/Grade.kt
@@ -0,0 +1,14 @@
+package jackall.moncalc.vo
+
+import io.realm.RealmObject
+import io.realm.annotations.PrimaryKey
+
+/**
+ * Created by matsumoto_k on 2017/11/03.
+ */
+open class Grade(
+        @PrimaryKey
+        open var id: Int = -1,
+        open var name: String = "",
+        open var rank: Int = -1
+) : RealmObject()
\ No newline at end of file
diff --git a/app/src/main/kotlin/jackall/moncalc/vo/MonstData.kt b/app/src/main/kotlin/jackall/moncalc/vo/MonstData.kt
index 44fbcb5..baabfa0 100644
--- a/app/src/main/kotlin/jackall/moncalc/vo/MonstData.kt
+++ b/app/src/main/kotlin/jackall/moncalc/vo/MonstData.kt
@@ -5,5 +5,6 @@
  */
 data class MonstData(
         val fruit: List<Fruit>,
-        val temple: List<Temple>
+        val temple: List<Temple>,
+        val grade: List<Grade>
 )
\ No newline at end of file