![](https://cdn.animecharacters.io/images/manga/large/21668-36cbcc52.jpg)
Type
Light Novel
Volumes
13
Chapters
75
Status
Completed
Published
2012-09-29 to 2021-03-31
Genres
Action
Ecchi
Fantasy
Romance
Harem
Supernatural
Serializations
Authors
Tetsuto Uesu (Story)
Nekosuke Ookuma (Art)
Shinmai Maou no Testament
"Hey, you said you wanted a little sister, right?" First year high school student, Toujou Basara, was suddenly asked by his father and fell into a state of panic. On top of that, the eccentric father told him he will be getting remarried. He then departed overseas after bringing Basara two beautiful step-sisters. But Mio and Maria's true forms are actually the newbie Demon Lord and a succubus!? Basara was almost entered into a master and servant contract with Mio, but a "reversed" contract was formed by mistake, and Basara is now the master!? Moreover, Basara is being hit by ecchi situation one after another due to the contract, but Mio's life is being pursued by other demon tribes and hero tribes!! The most powerful contractor's desire action drama begins! (Source: MU)
Related
Characters
Mio Naruse
Main
Chisato Hasegawa
Main
Basara Toujou
Main
Maria Naruse
Main
Yuki Nonaka
Main
Zest
Supporting
Kurumi Nonaka
Supporting
Yahiro Takigawa
Supporting
Jin Toujou
Supporting
Kyouichi Shiba
Supporting
Takashi Hayase
Supporting
Zolgear
Supporting