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The Testament of Sister New Devil

The Testament of Sister New Devil

新妹魔王の契約者〈テスタメント〉
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Action Ecchi Fantasy Romance Shounen
"Hey, you said you wanted an little sister, right?" First year high school student, Toujo Basara, was suddenly asked by his farther 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: Manga
Status: Finished
Authors: Uesu, Tetsuto , Kashiwa, Miyako
Magazines: Shounen Ace
Published: May 25, 2013 to Apr 26, 2017
Score: 7.24
Views: 30,158
[JA ] Japanese (47 chapters) [EN ] English (21 chapters)
[JA ] Japanese (9 volumes) [EN ] English (4 volumes)

Author's Other Manga

EN/JA Battle in 5 seconds after meeting

Battle in 5 seconds after meeting

Action, Super Power, Supernatural
Chap 212 [EN]
Chap 211 [EN]
Chap 210 [EN]