Anime · Tokyo MX
The Testament of Sister New Devil
Who's in it
Cast
The principal ensemble across the run of the series.
Yuichi Nakamura
Basara Tojo (voice)
22 eps
Ayaka Asai
Mio Naruse (voice)
22 eps
Kaori Fukuhara
Maria Naruse (voice)
22 eps
Yuu Asakawa
Chisato Hasegawa (voice)
14 eps
Iori Nomizu
Kurumi Nonaka (voice)
14 eps
Sarah Emi Bridcutt
Yuki Nonaka (voice)
21 eps
Keiji Fujiwara
Jin Tojo (voice)
16 eps
Seiko Yoshida
Zest (voice)
16 eps
Tomokazu Sugita
Yahiro Takigawa (voice)
33 eps
Shuusaku Shirakawa
Bad D (voice)
1 eps
Natsumi Oshita
Female Student (voice)
1 eps
Osamu Kaneko
Man (voice)
1 eps
Rika Kinugawa
Woman (voice)
1 eps
Kenji Nomura
Volga (voice)
3 eps
Daisuke Hirakawa
Shiba Kyōichi (voice)
3 eps
Go Inoue
Takashi Hayase (voice)
3 eps
Misuzu Togashi
Childhood Basara (voice)
3 eps
Chiharu Kitaoka
Childhood Takashi (voice)
2 eps
Yukiko Aruga
Female Teacher (voice)
1 eps
Masaaki Yano
Cardinal (voice)
10 eps
Hiroto Kazuki
Zolgear (voice)
6 eps
Reina Kimura
Female Student (voice)
7 eps
Kazuhiro Sunseki
Male Student (voice)
1 eps
Hiroki Etou
Shōhei Donoue (voice)
9 eps
Saeko Zogo
Shiho Aikawa (voice)
5 eps
Misato
Chika Sakaki (voice)
5 eps
Yu Shimamura
Rikka Kajiura (voice)
2 eps
Masaaki Itatori
Kraus (voice)
11 eps
Yuji Kameyama
Commentator (voice)
1 eps
Masatoshi Kashino
Male Student (voice)
1 eps
Yujiro Kakuda
Male Student (voice)
1 eps
Satoru Murakami
Male Student (voice)
1 eps
Kenjiro Tsuda
Mamoru Sakazaki (voice)
8 eps
Keiichi Nakagawa
Balflear (voice)
4 eps
Mina
Noel (voice)
8 eps
Asami Tano
Nanao Tachibana (voice)
3 eps
Junji Tachibana
Soldier (voice)
1 eps
Ayumu Murase
Luka (voice)
4 eps
Seiro Ogino
Nebula (voice)
1 eps
Nobuyori Sagara
Soldier (voice)
1 eps
The Nutevio profile
TV DNA
How The Testament of Sister New Devil actually feels to watch, measured on the traits our editors track across every series.
Signature profile
The Testament of Sister New Devil reads strongest on Spectacle, World Building and Bingeability.
Visual ambition — scale, craft and set-piece filmmaking.
The scale, internal logic and texture of the world.
How hard it is to stop after one episode.
How often the series is genuinely funny, by design.
How fully written and psychologically layered the ensemble is.
How much each hour depends on the one before it.
How often an episode ends on a hook you can't ignore.
The sustained pressure the series keeps you under.
How much the series is designed to affect you.
The story
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!
The run
Seasons
2 seasons · 22 episodes.
Season 0 · Complete
Specials
201513 episodes
Season 1 · Complete
Season 1
201512 episodes
6.7IMDbToujou 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!
Best episode · S01E09 Merits and Demerits of Master and Servant
Season 2 · Complete
Burst
201510 episodes
7.0IMDbAfter two demon girls, Maria the succubus and Mio the demoness, force Basara into a contract that makes him their master, the trio form a complicated master-servant relationship. Basara is the last descendant of a demon-fighting hero clan, but as master of two demon girls, he finds himself defending them instead of fighting them.
Best episode · S02E02 Suspicions Deepening Within Mysteries
Where the series peaks
Best Episodes
The hours that define the show, ranked by audience response and editorial signal.
S01E08
Erotic Succubus Out of Control
Ten days pass since the battle with Takashi and others. Although the battle ended with reconciliation, Yuki returned to the hero's village. ...or she was supposed to, but when Basara returns home, he finds Yuki in an apron!
S01E01
The Day I Got A Little Sister
Thanks to his father's sudden remarriage, Toujou Basara finds himself with two beautiful new step-sisters. Their names are Naruse Mio and Maria. Mio wakes him up in the morning, while Maria stands in the kitchen wearing a suggestive outfit...
S01E02
First Contract Between Servant And Master
As daughter of the former demon lord, Mio's foster parents were slain by powerful demons after her life. Still seeking to slay her, Basara reveals himself as a member of the hero clan--an enemy of the demons--and vows to protect Mio as a member of his family.
S01E03
Reunion and a Gap in Trust
Basara's childhood friend Nonaka Yuuki warns him not to get involved with Naruse Mio any longer. She is a fellow member of the hero clan, and the one charged with observing Mio. She claims that Mio will bring great disaster, but Basara proclaims that he will protect Mio as a girl on his own.
S01E04
Until Sadness Reaches Zero
Basara suffers a deep wound in the battle against the white-masked man after Mio's power. Mio regrets getting Basara involved, and challenges the white-masked man to battle on her own. Meanwhile, in order to protect Mio, Basara resolves to use the "forbbiden art" he sealed away after the events of his past. What was the tragedy that visited the hero village and Basara?
S01E07
The Depths of Love and Hatred
Basara leads Mio to higher peaks as he pursues pleasure with the use of syrup. With their master-servant pact reaching a new level, they both bring their full might to face the ones trying to eliminate Mio: Takashi and Kurumi.
Recently aired
Latest Episodes
S00E12
BURST Special 5
S00E11
BURST Special 4
S00E10
BURST Special 3
S00E09
BURST Special 2
S00E13
The Very Peaceful Daily Life of Toujou Basara
- Directed by Yoshihiko Iwata
- Written by Yasunori Yamada
S00E08
BURST Special 1
Behind the series
Created by
Showrunners, creators, executive producers and the writers who set the voice of the series.
The craft
Key Crew
Directing, writing, production, camera, music and editing.
Executive production
- Satoshi MotonagaProducer
- Chiaki KurakaneProducer
- Takeshi YasudaExecutive Producer
Writing
- Yasunori YamadaWriter
- Sumio UetakeWriter
Direction
- Takashi IkehataDirector
- Tatsuma MinamikawaDirector
- Naoya AndoDirector
- Yoko FukushimaDirector
- Yu SakuraiDirector
- Yoshito MikamoDirector
Cinematography
- Tsubasa YokoyamaDirector of Photography
Music
- Yasuharu TakanashiOriginal Music Composer
Where to watch
Streaming
Availability verified against regional listings.
- Apple TV StoreBuy
- CrunchyrollStreaming
- Crunchyroll Amazon ChannelStreaming
If you liked this
Similar Series
Series that share this one's texture, not just its genre tags.
Date A Live
2013
Epic world building · Sharp comic writing
Blood Lad
2013
Epic world building · Sharp comic writing
Hybrid x Heart Magias Academy Ataraxia
2016
Epic world building · Sharp comic writing
The Irregular at Magic High School
2014
Epic world building · Large-scale spectacle
Welcome to Demon School! Iruma-kun
2019
Epic world building · Sharp comic writing
Is It Wrong to Try to Pick Up Girls in a Dungeon?
2015
Epic world building · Sharp comic writing
Chivalry of a Failed Knight
2015
Epic world building · Large-scale spectacle
Twin Star Exorcists
2016
Epic world building · Sharp comic writing
The Seven Deadly Sins
2014
Epic world building · Large-scale spectacle
Myriad Colors Phantom World
2016
Epic world building · Sharp comic writing
In Another World with My Smartphone
2017
Epic world building · Sharp comic writing
Kamisama Kiss
2012
Epic world building · Sharp comic writing
Where to go from here
Watch Next
Our editors' suggestion for the show you should start tonight — and why.
Mushoku Tensei: Jobless Reincarnation
2021
Continue the epic fantasy journey with another world worth getting lost in.
Bleach
2004
Another invented world built with the same seriousness — start at episode one.
Doraemon
2005
If the world-building is what held you, this is the next map to walk.
Rick and Morty
2013
Continue the epic fantasy journey with another world worth getting lost in.
Stranger Things
2016
Another invented world built with the same seriousness — start at episode one.
X-Men '97
2024
If the world-building is what held you, this is the next map to walk.
Never stop watching
Related Collections
No related collections yet
This title isn't in a published Nutevio collection yet. It will appear here automatically as soon as it is.
Join the conversation