★ 6.9 TV Series
High School DxD
When a pair of sexy girls, Maria and Mio, come to live with high school student Basara Toujou, his life changes forever. The two girls have a secret that they don’t keep for long—Maria is a succubus, and… Read more
Storyline
When a pair of sexy girls, Maria and Mio, come to live with high school student Basara Toujou, his life changes forever. The two girls have a secret that they don’t keep for long—Maria is a succubus, and Mio is a future Demon Lord. But Basara has a secret of his own—he’s the last descendant from a clan of demon-fighting heroes. To make things even more complicated, the girls force Basara into a master-servant contract, and Basara ends up becoming their master! What happens when you put a succubus, a demoness, and a demon-fighting hero under the same roof? They form a bond that will help them to take on anything! (Source: Funimation)
Trailer
Characters & Japanese Voice Cast
Mio Naruse
Main
VA: Ayaka Asai
Yuki Nonaka
Main
VA: Sarah Emi Bridcutt
Maria Naruse
Main
VA: Kaori Fukuhara
Basara Toujou
Main
VA: Yuuichi Nakamura
Chisato Hasegawa
Supporting
VA: Yuu Asakawa
Zest
Supporting
VA: Seiko Yoshida
Kurumi Nonaka
Supporting
VA: Iori Nomizu
Yahiro Takigawa
Supporting
VA: Tomokazu Sugita
Jin Toujou
Supporting
VA: Keiji Fujiwara
Shella
Supporting
VA: Kumiko Nishihara
Sakaki Chika
Supporting
VA: MisatoSeasons & Related Anime
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Frequently Asked Questions
How many episodes does The Testament of Sister New Devil have?
The Testament of Sister New Devil has 12 episodes.
Which studio made The Testament of Sister New Devil?
The Testament of Sister New Devil is produced by Production IMS.
Facts from AniList (also listed on MyAnimeList); streaming availability from JustWatch India. Last updated 16 October 2026, 10:37 PM IST. Episode times are Japan broadcast times shown in IST. Spotted a mistake? Write to [email protected].