Basara Toujou met his two cute little sisters, Mio Naruse and Maria Naruse. The two sisters revealed themselves as a member of the demon clan and Basara as a member of hero clan, demon clan's enemy, and is not related by family. Mio is the future Demon Lord and since Mio's power is not fully awakened, Basara will protect her from the demons who are after the power she inherited from her deceased father, Demon Lord Wilbert.
English: The Testament of Sister New Devil
Synonyms: Shinmai Maou no Keiyakusha
Status: Finished Airing
Aired: Jan 8, 2015 to Mar 26, 2015
Premiered: Winter 2015
Broadcast: Thursdays at 02:00 (JST)
Producers: Kadokawa Shoten, AT-X, Nippon Columbia, Kadokawa Pictures Japan, KlockWorx, Mobcast
Licensors: Funimation, Crunchyroll
Studios: Production IMS
Source: Light novel
Genres: Action, Ecchi, Fantasy, Romance, Harem, Demons
Duration: 23 min. per ep.
Rating: R+ - Mild Nudity