The Testament of Sister New Devil (2015): cast, story & where to watch

Released in 2015, The Testament of Sister New Devil is an animation, action & adventure, comedy and sci-fi & fantasy series.

What it’s about. Toujou Basara is a high school student whose father has suddenly just remarried. His father then departs overseas leaving Basara with two new beautiful step-sisters. Little does he know, his new sisters, Mio and Maria are actually the new Demon Lord and a succubus!? Almost trapped into a life of servitude, Basara forms a reverse contract by accident and ends up becoming Mio's master! Hijinks ensue as Basara finds himself in one ecchi situation after another. However, Mio's life is in danger as she is pursued by demons and heroes!

Who’s in it. The Testament of Sister New Devil stars Yuichi Nakamura as Basara Tojo (voice), Ayaka Asai as Mio Naruse (voice), Kaori Fukuhara as Maria Naruse (voice) and Yuu Asakawa as Chisato Hasegawa (voice), among others.

How it landed. With an audience score of 7.9/10, The Testament of Sister New Devil has been warmly received by audiences.

Where to watch. In US you can stream it on Crunchyroll and Crunchyroll Amazon Channel and rent or buy it from Apple TV Store. See the full, country-by-country breakdown on our where to watch The Testament of Sister New Devil page.

If you liked it. Fans of The Testament of Sister New Devil tend to enjoy Rick and Morty, Demon Slayer: Kimetsu no Yaiba, Attack on Titan and Attack on Titan: No Regrets.