TV series
The Testament of Sister New Devil
2015, Japanese, on TOKYO MX.
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!
- Seasons
- 2
- Episodes
- 22
- Episode length
- 24 min
- Status
- Ended in 2015
Absolute Cinema
Drop everything and watch it.
7.9/10 from 376 TMDB viewer ratings.
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Where to watch The Testament of Sister New Devil
The Testament of Sister New Devil is streaming on Crunchyroll in India.
Crunchyroll
Crunchyroll Amazon Channel
Apple TV StoreAvailability in India as of 11 November 2026. Streaming data by JustWatch.
Latest episode
S2 E10: The Consequences of What Must Be Done
Aired 11 December 2015
Seasons 2
Cast & crew
- Yuichi NakamuraBasara Tojo (voice) · 22 ep
- Ayaka AsaiMio Naruse (voice) · 22 ep
- Kaori FukuharaMaria Naruse (voice) · 22 ep
- Sarah Emi BridcuttYuki Nonaka (voice) · 21 ep
- Tomokazu SugitaLars (voice) · 17 ep
- Keiji FujiwaraJin Tojo (voice) · 16 ep
- Seiko YoshidaZest (voice) · 16 ep
- Yuu AsakawaChisato Hasegawa (voice) · 14 ep
- Iori NomizuKurumi Nonaka (voice) · 14 ep
- Masaaki ItatoriKraus (voice) · 11 ep
- Masaaki YanoBad C (voice) · 10 ep
- Hiroki EtouMonster (voice) · 9 ep
Details
- First aired
- 7 January 2015
- Last aired
- 11 December 2015
- Network
- TOKYO MX
- Original title
- 新妹魔王の契約者
- Language
- Japanese
- Country
- Japan
- Type
- Scripted
- Rated
- TV-MA
Check ratings elsewhere
News & fan talk
What The Testament of Sister New Devil is based on
The Testament of Sister New Devil is based on The Testament of Sister New Devil, a 2012 light novel series by Tetsuto Uesu, published by Kadokawa Sneaker Bunko.
Light novel series · 2012
The Testament of Sister New Devil
By Tetsuto Uesu
Published by Kadokawa Sneaker Bunko
Source details from Wikidata and TMDB.
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The Testament of Sister New Devil: quick answers
Is The Testament of Sister New Devil worth watching?
Our verdict is Absolute Cinema: Drop everything and watch it. It scores 7.9/10 from 376 TMDB viewer ratings.
How many seasons of The Testament of Sister New Devil are there?
The Testament of Sister New Devil has 2 seasons and 22 episodes, about 24 minutes each.
Is The Testament of Sister New Devil finished?
Yes. The Testament of Sister New Devil ended in 2015, so you can watch the whole story.
Which OTT platform is The Testament of Sister New Devil on?
The Testament of Sister New Devil is streaming on Crunchyroll in India. (Checked 11 November 2026.)
The Testament of Sister New Devil parents guide: is it suitable for kids?
The Testament of Sister New Devil is rated TV-MA. Check the rating guidance before watching with young children.
What shows are like The Testament of Sister New Devil?
If you liked The Testament of Sister New Devil, try Hybrid x Heart Magias Academy Ataraxia, The Qwaser of Stigmata, Aesthetica of a Rogue Hero.
What is The Testament of Sister New Devil based on?
The Testament of Sister New Devil is based on The Testament of Sister New Devil, a 2012 light novel series by Tetsuto Uesu, published by Kadokawa Sneaker Bunko.