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The Testament of Sister New Devil 2015

★ 7.9/10 · 362 votes TV-MA AnimationAction & AdventureComedySci-Fi & Fantasy 2 seasons · 22 eps Ended
Where to watch: CrunchyrollCrunchyroll Amazon ChannelApple TV Store
Quick answer

What is The Testament of Sister New Devil?

The Testament of Sister New Devil is an anime television series that originally aired from 2015 to 2016. The story follows a high school student named Toujou Basara whose father suddenly remarries and departs for an overseas trip.

Type
TV series
Year
2015
Status
Ended
Episodes
22
Runtime
24 minutes
First aired
Jan 7, 2015
Last aired
Dec 11, 2015
Original language
JA
Origin
JP
Networks
Tokyo MX
Genres
Animation, Action & Adventure, Comedy, Sci-Fi & Fantasy
Updated
Availability by region

Where to watch

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CrunchyrollCrunchyroll Amazon Channel
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Estimate the schedule using 22 episodes and an average 24-minute runtime.

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Overview

The Testament of Sister New Devil is an anime television series that originally aired from 2015 to 2016. The story follows a high school student named Toujou Basara whose father suddenly remarries and departs for an overseas trip. Basara is left in the care of two new stepsisters, Mio and Maria. Unbeknownst to Basara, his new siblings are actually a Demon Lord and a succubus. Following an accidental reverse contract, Basara becomes Mio’s master instead of falling into a life of servitude. As he navigates his new living situation, Basara frequently finds himself in various ecchi scenarios. The plot intensifies as Mio’s life is placed in danger due to persistent threats from both demons and heroes who are pursuing her. The series is available for streaming through platforms such as Crunchyroll and JustWatch. The production credits for the series, including information regarding directors, writers, and the cast of actors and actresses, are documented in industry databases.

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Should you watch it?

“A high schooler discovers his new step-sisters are supernatural beings and becomes their accidental master.”

Reasons to watch
  • features supernatural character dynamics
  • includes comedic hijinks
Keep in mind
  • contains frequent suggestive situations

Watch it if you enjoy supernatural anime comedies involving accidental contracts and high-stakes danger.

This series contains mature, suggestive themes and ecchi content unsuitable for younger viewers.

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Episode guide

Season 1 · 12 episodes Open the complete Season 1 guide →
Season 2 · 10 episodes

Frequently asked questions

What is the premise of the series?

Basara Toujou finds himself living with two step-sisters who are actually a Demon Lord and a succubus.

What happens to Basara?

He accidentally forms a reverse contract that makes him the master of his step-sister, Mio.

Is there conflict in the show?

Yes, Mio is pursued by both demons and heroes, placing her life in constant danger.

What is the tone of the show?

The series balances supernatural action with frequent ecchi situations.

Does the father play a role?

The father leaves for overseas shortly after remarrying, leaving Basara alone with his new sisters.