Shinmai Maou no Testament

The Testament of Sister New Devil (Japanese: 新妹魔王の契約者,テスタメント, Hepburn: Shinmai Maō no Tesutamento) is a Japanese light novel series written by Tetsuto Uesu and illustrated by Nekosuke Ōkuma. The first season of an anime television adaptation premiered on January 7, 2015. The first OVA episode was released on June 22, 2015. Basara Tojo is a high school student, who finds that his two new sisters are actually part of a demon clan.