The Testament of Sister New Devil
Series Overview
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!
Broadcast Schedule & Network Information
Airing status, episode counts, upcoming schedule, and network syndication.
2 Seasons • 22 Episodes
24 min per episode
2015 – 2015
Premiered: Wed, Jan 7, 2015
Creative Production Team
Latest Aired Episode
Season 2, Episode 10: “The Consequences of What Must Be Done”
The council's rampage sends quakes through the demon realm, and the demon Chaos is called forth through a giant magic circle. That commander of all heroic spirits flails madly, seeking to claim Basara, Mio, and Leohart's lives. Do they even stand a chance of victory with this supreme being before them?! Meanwhile, Maria, Yuki, and the others put a final end to their own personal battle. "Believe in me... once more." The ultimate sibling combo risks their lives to face the disaster striking all of the demon realm!
Seasons & Episodes Breakdown
Trailers, Teasers & Extra Featurettes
Official promotional previews, behind-the-scenes footage, and exclusive clips.
The Testament of Sister New Devil: Season 1 - TrailerOfficial
Type: Trailer • Published 2018-03-26
Cast & Creators
Explore Star Directory →
Yuichi Nakamura
Basara Tojo (voice)
Ayaka Asai
Mio Naruse (voice)
Kaori Fukuhara
Maria Naruse (voice)
Tomokazu Sugita
Yahiro Takigawa (voice)
Yuu Asakawa
Chisato Hasegawa (voice)
Iori Nomizu
Kurumi Nonaka (voice)
Sarah Emi Bridcutt
Yuki Nonaka (voice)
Keiji Fujiwara
Jin Tojo (voice)
Seiko Yoshida
Zest (voice)
Creative Leadership & Key Crew
Hisashi Saito
Tetsuto Uesu
Yoshiaki Kimura
Department Leadership Roster
Yoshiaki Kimura
Editor
Age Classification & Content Advisories
Official viewer rating standards and content warnings across international classification boards.
TV-MA: Mature Audience Only — Specifically designed to be viewed by adults and unsuitable for children under 17.
International Certification Matrix
Mature Audience Only — Specifically designed to be viewed by adults and unsuitable for children under 17.
FSK 16 — Restricted to viewers aged 16 and older.
Suitable only for adults 18 years and over.
Interdit aux moins de 18 ans — 18+ only.
18+ Restricted to Adults.
Production Stills & Gallery
Official cinematic photography and background stills for The Testament of Sister New Devil.
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Frequently Asked Questions About The Testament of Sister New Devil
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What is The Testament of Sister New Devil 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!
How many seasons does The Testament of Sister New Devil have?
The Testament of Sister New Devil comprises 2 seasons available to explore.
Who stars in The Testament of Sister New Devil?
Key cast members in The Testament of Sister New Devil include Yuichi Nakamura, Ayaka Asai, Kaori Fukuhara, Tomokazu Sugita, Yuu Asakawa.
Who created or directed The Testament of Sister New Devil?
The Testament of Sister New Devil was developed and directed by Hisashi Saito.