The Testament of Sister New Devil
The Testament of Sister New Devil
TV · Winter 2015 · Production IMS

The Testament of Sister New Devil

Shinmai Maou no Testament

新妹魔王の契約者

Sign in to track this anime
Synopsis
The Testament of Sister New Devil is a 2015 fantasy action anime with 12 episodes. It was made by Production IMS and is based on the light novel series by Tetsuto Uesu. It is set in modern Japan, where demons and heroes secretly exist. The show has a lot of nudity and strong sexual content, so it is only for adult viewers.

Basara Toujou is a high school boy who lives with his father. One day, his father tells him he is getting remarried, and he brings home two girls who will become Basara's new stepsisters. They are Mio Naruse, a proud girl with red hair, and Maria, her younger sister. Soon after, his father leaves to work overseas.

Basara quickly learns that the girls are not human. Mio is the daughter of the former Demon Lord, and she has inherited his great power. Maria is a succubus. Many demons want to capture Mio and take her power. Basara also has a secret of his own. He comes from a clan of heroes who fight demons, but he left that life behind.

Basara decides to protect Mio. A magic contract then goes wrong, and it binds Mio to Basara as his servant. The contract has embarrassing side effects whenever Mio feels disloyal.

Soon, demons and heroes both start to come after them. The show mixes fights and harem comedy with a lot of fan service.