Popular
Movie
Completed
Random

The Testament of Sister New Devil

R+
HD
12
12
TV 23m
Watch now
Running into your new stepsister in the bathroom is not the best way to make a good first impression, which Basara Toujou learns the hard way. When his father suddenly brings home two beautiful girls and introduces them as his new siblings, he has no choice but to accept into his family the Naruse sisters: busty redhead Mio and petite silver-haired Maria.

But when these seemingly normal girls reveal themselves as demons—Mio the former Demon Lord's only daughter and Maria her trusted succubus servant—Basara is forced to reveal himself as a former member of a clan of "Heroes," sworn enemies of the demons. However, having begun to care for his new sisters, Basara instead decides to protect them with his powers and forms a master-servant contract with Mio to keep watch over her.

With the Heroes observing his every move and the constant threat of hostile demons, Basara has to do the impossible to protect his new family members. Moreover, the protector himself is hiding his own dark secret that still haunts him to this day...+ More
Anitummy is the best site to watch The Testament of Sister New Devil SUB online, or you can even watch The Testament of Sister New Devil DUB in HD quality. You can also find Production IMS anime on Anitummy website.
Overview:
Running into your new stepsister in the bathroom is not the best way to make a good first impression, which Basara Toujou learns the hard way. When his father suddenly brings home two beautiful girls and introduces them as his new siblings, he has no choice but to accept into his family the Naruse sisters: busty redhead Mio and petite silver-haired Maria.

But when these seemingly normal girls reveal themselves as demons—Mio the former Demon Lord's only daughter and Maria her trusted succubus servant—Basara is forced to reveal himself as a former member of a clan of "Heroes," sworn enemies of the demons. However, having begun to care for his new sisters, Basara instead decides to protect them with his powers and forms a master-servant contract with Mio to keep watch over her.

With the Heroes observing his every move and the constant threat of hostile demons, Basara has to do the impossible to protect his new family members. Moreover, the protector himself is hiding his own dark secret that still haunts him to this day...
Japanese: 新妹魔王の契約者〈テスタメント〉
Aired: Jan 8, 2015 to Mar 26, 2015
Premiered: Winter 2015
Duration: 23m
Status: Finished Airing
MAL Score: 6.85
Genres: Action Demons Ecchi Fantasy Romance Harem
Studios: Production IMS
Producers: Kadokawa Shoten, AT-X, Nippon Columbia, Kadokawa Pictures Japan, KlockWorx, Mobcast, Production IMS, Funimation, Crunchyroll
Anitummy is the best site to watch The Testament of Sister New Devil SUB online, or you can even watch The Testament of Sister New Devil DUB in HD quality. You can also find Production IMS anime on Anitummy website.

More Seasons

The Testament of Sister New Devil
The Testament of Sister New Devil OVA
The Testament of Sister New Devil: Burst
The Testament of Sister New Devil 2nd Season: Burst OVA
The Testament of Sister New Devil

Characters & Voice Actors

View more
Naruse, Maria

Naruse, Maria

Main
Fukuhara, Kaori

Fukuhara, Kaori

Japanese
Naruse, Mio

Naruse, Mio

Main
Asai, Ayaka

Asai, Ayaka

Japanese
Nonaka, Yuki

Nonaka, Yuki

Main
Bridcutt, Sarah Emi

Bridcutt, Sarah Emi

Japanese
Toujou, Basara

Toujou, Basara

Main
Nakamura, Yuuichi

Nakamura, Yuuichi

Japanese
Hasegawa, Chisato

Hasegawa, Chisato

Supporting
Asakawa, Yuu

Asakawa, Yuu

Japanese
Hayase, Takashi

Hayase, Takashi

Supporting
Inoue, Gou

Inoue, Gou

Japanese

Promotion Videos

PV 2

PV 1

CM

Recommended for you

12
12
Magimoji Rurumo

Magimoji Rurumo

TV 24m
12
12
12
Shomin Sample

Shomin Sample

TV 23m
13
13
Overlord: Ple Ple Pleiades 2

Overlord: Ple Ple Pleiades 2

ONA 2m
12
12
Ro-Kyu-Bu ~ Fast Break!

Ro-Kyu-Bu ~ Fast Break!

TV 24m
6
6
Tenchi in Tokyo: Specials

Tenchi in Tokyo: Specials

Special 4m
13
13
White Album Season 2

White Album Season 2

TV 25m
1
1
1
X: An Omen

X: An Omen

OVA 22m
12
12
Fairies Albums

Fairies Albums

ONA 24m
24
24
24
Sword Art Online II

Sword Art Online II

TV 23m
2
2
2
UFO Ultramaiden Valkyrie 4: Banquet of Time, Dreams, and Galaxies

UFO Ultramaiden Valkyrie 4: Banquet of Time, Dreams, and Galaxies

OVA 24m
1
1
1
Urusei Yatsura Movie 6: Always My Darling

Urusei Yatsura Movie 6: Always My Darling

Movie 77m
26
26
VS Knight Lamune & 40 Fire

VS Knight Lamune & 40 Fire

TV 23m
12
12
Shin Koihime†Musou

Shin Koihime†Musou

TV 25m
1
1
1
Dragon Ball Movie 01: Curse of the Blood Rubies

Dragon Ball Movie 01: Curse of the Blood Rubies

Movie 50m
1
1
1
Dragon Ball Z: Broly – Second Coming

Dragon Ball Z: Broly – Second Coming

Movie 50m
24
24
24
Katana Maidens: Toji no Miko

Katana Maidens: Toji no Miko

TV 23m
12
12
Yozakura Quartet

Yozakura Quartet

TV 24m
12
12
12
Freezing Vibration

Freezing Vibration

TV 23m