Item Description
| title | 新妹魔王の契約者(9) |
| category | The Testament of Sister New Devil (Shinmai Maou no Testament) |
| product type | Manga |
| author | Uesu Tetsuto (上栖綴人) ,Miyako Kashiwa (みやこかしわ) ,大熊猫介（ニトロプラス） |
| publisher | KADOKAWA |
| Label | Kadokawa Comics Ace |
| genre | Seinen Manga |
| release date | 2017-7-24 |
| language | Japanese |
