English: The Testament of Sister New Devil
Synonyms: Shinmai Maou no Keiyakusha
Aired: Jan 8, 2015 to Mar 26, 2015
Studios: Production IMS
Genres: Action, Ecchi, Fantasy, Harem, Romance
Rating: R+ – Mild Nudity
MAL: Shinmai Maou no Testament (The Testament of Sister New Devil)
"Hey, you said you wanted a 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!?