# Shinmai Maou no Testament
*Also known as: The Testament of Sister New Devil / 新妹魔王の契約者*

## Facts
- Format: TV
- Status: concluded
- Year: 2015
- Season: WINTER

## Renewal Score
**Shinmai Maou no Testament** has a **52% renewal probability** on Courcast (confidence: 99%) as of 2026-06-03.

## Synopsis
When a pair of sexy girls, Maria and Mio, come to live with high school student Basara Toujou, his life changes forever. The two girls have a secret that they don’t keep for long—Maria is a succubus, and Mio is a future Demon Lord. But Basara has a secret of his own—he’s the last descendant from a clan of demon-fighting heroes. To make things even more complicated, the girls force Basara into a master-servant contract, and Basara ends up becoming their master! What happens when you put a succubu

## About Courcast
Courcast forecasts anime renewal probability using daily signals from streaming platforms, fan communities, and industry sources. Each CourScore (0–100) reflects fandom momentum, streaming performance, source material runway, and franchise history.

- Full details: https://courcast.com/title/shinmai-maou-no-testament-winter-2015
- API: https://courcast.com/api/public/titles/shinmai-maou-no-testament-winter-2015
- About Courcast: https://courcast.com/about

*Last updated: 2026-06-03*