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 Testament of Sister New Devil explores themes of magic, supernatural, high school. A blend of Animation and Action & Adventure, all seasons are available to stream for free on Ernax — no account required.
Genre: Animation, Action & Adventure, Comedy, Sci-Fi & Fantasy
Seasons: 2 · 22 episodes
Status: Ended
Network: TOKYO MX
Cast: Yuichi Nakamura, Ayaka Asai, Kaori Fukuhara, Tomokazu Sugita, Yuu Asakawa, Iori Nomizu, Sarah Emi Bridcutt, Keiji Fujiwara, Seiko Yoshida
Rating: 7.9/10 (372 votes)
Themes: magic, supernatural, high school, harem, romance, demon, ecchi, anime
Stream all seasons of The Testament of Sister New Devil online free in HD on Ernax. No subscription or sign-up required. Watch The Testament of Sister New Devil free without Netflix, Amazon Prime, or any paid service.