}

Synopsis

"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)

Type: Light Novel

Author's: Uesu Tetsuto, Ookuma Nekosuke

Volume's: 13

Chapter's: 75

Ongoing: No

Published: from Sep 29 2012 to Mar 31 2021

Score:

7.48 (Scored by 1,773 Users)
3044 Ranked in Manga

Also Known As:

English

The Testament of Sister New Devil

Japanese

新妹魔王の契約者〈テスタメント〉

Synonyms
  • Shinmai Maou no Keiyakusha

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