| Shinmai Maou no Testament IX | |
|---|---|
 Basara Toujou and Yuki Nonaka | |
| Kana | 新妹魔王の契約者IX |
| Info | |
| Air/Release Date | December 01, 2015 |
| ISBN | 978-4-04-1037478 |
| Pages | 392 |
| Previous | Shinmai Maou no Testament VIII |
| Next | Shinmai Maou no Testament X |
Volume IX is the ninth light novel volume of Shinmai Maou no Keiyakusha.