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The Testament of Sister New Devil

47 chapters | Completed | Rank 2876
"Hey, you said you wanted an little sister, right?" First year high school student, Toujo 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!

Artworks


Other Facts

English PublisherSeven Seas
Original PublisherHakusensha
PublishedMay 25, 2013 to Apr 26, 2017
SerializationYoung Animal Arashi
Last UpdatedAugust 9, 2018
Other namesThe Testament of Sister New Devil, Shinmai Maou no Keiyakusha, The Testament of Sister New Devil, Shinmai Maou no Testament, Shinmai Maou no Keiyakusha, 新妹魔王の契約者〈テスタメント〉, 新妹魔王の契約者

Chapters

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Vol.9 Pact After: The Toujou Family: Afterword [END]August 9, 2018
Vol.9 Last PactAugust 9, 2018
Vol.9 Pact 39.5: [Side Story] Go with MariaAugust 9, 2018
Vol.9 Pact 39: ReturnAugust 9, 2018
Vol.9 Pact 38: A Score SettledAugust 9, 2018
Vol.9 Pact 37: Runic SwordAugust 9, 2018
Vol.9 Pact 36: Mio's AwakeningAugust 9, 2018
Vol.8 Pact 35.5: Behind the False SmileApril 10, 2018
Vol.8 Part 35: The Results of The DecisionApril 10, 2018
Vol.8 Pact 34: The Demon Sword GramrApril 10, 2018
Vol.8 Pact 33: Everything War for This MomentApril 10, 2018
Vol.8 Pact 32: MasterApril 10, 2018
Vol.8 Pact 31: Basara VS. MariaJuly 8, 2018
Vol.7 Pact 30.5: Maria the Graphic NovelistJuly 8, 2018
Vol.7 Pact 30: KeyJuly 8, 2018
Vol.7 Pact 29: Parting and ReunionJuly 8, 2018
Vol.7 Pact 28.5: The Testament of Sister New DevilJuly 8, 2018
Vol.7 Pact 28: Betrayal and ConnectionsJuly 8, 2018
Vol.7 Pact 27: Betrayal, and Then...August 30, 2016
Vol.6 Pact 26.5: An Average Day in the Life of Toujou BasaraJuly 8, 2018
Vol.6 Pact 26: The Ups and Downs of a Wavering PactJuly 8, 2018
Vol.6 Pact 25: The Second Servant-Master ContractJuly 8, 2018
Vol.6 Pact 24: The Sexy Lil' Succubus' Rampage: Part 2July 8, 2018
Vol.6 Pact 23: The Sexy Lil' Succubus' RampageJuly 8, 2018
Vol.5 Pact 22: Conclusion and PartingJuly 8, 2018
Vol.5 Pact 21: What A Man Believes InSeptember 4, 2017
Vol.5 Pact 20: Time For A ReckoningAugust 30, 2016
Vol.5 Pact 19: Unwavering Resolve and What Comes From ItAugust 30, 2016
Vol.4 Special: A Day in the Life of Maria-chanAugust 30, 2016
Vol.4 Pact 18: Feelings Riding Upon a BladeAugust 30, 2016
Vol.4 Pact 17: Wanting to Protect Before Being WarnedAugust 30, 2016
Vol.4 Pact 16: Intersecting DestiniesAugust 30, 2016
Vol.4 Pact 15: Gazing Upon the Unfading PastAugust 30, 2016
Vol.3 Pact 14: The Direction of Master-Servant TrustAugust 30, 2016
Vol.3 Pact 13: Face to Face with HostilityAugust 31, 2017
Vol.3 Pact 12: The Demon Lord and the HeroAugust 30, 2016
Vol.3 Pact 11: Mornings, Little Sisters and The Ultimate Demon LordAugust 30, 2016
Vol.2 Pact 10: What I Want to ProtectAugust 30, 2016
Vol.2 Pact 9: Until Your Sorrow Has Gone (Part 3)August 30, 2016
Vol.2 Pact 8: Until Your Sorrow Has Gone (Part 2)August 30, 2016
Vol.2 Pact 7: Until Your Sorrow Has Gone (Part 1)August 30, 2016
Vol.2 Pact 6: Allies and EnimiesAugust 30, 2016
Vol.1 Pact 5: The Space Between Reunion and Trust (End)August 30, 2016
Vol.1 Pact 4: The Space Between Reunion and Trust (Beginning)August 30, 2016
Vol.1 Pact 3: The First Master-Servant PactAugust 30, 2016
Vol.1 Pact 2: The Demon Lord and the HeroAugust 30, 2016
Vol.1 Pact 1: How to Assault Your Little SisterAugust 30, 2016