Genres: action, romance, supernatural Themes: demons, ecchi, harem Objectionable content: Intense Number of episodes: 12 Vintage: 2015-01-07 Opening Theme: “Blade of Hope” by sweet ARMS Ending Theme: “Still Sis” by Kaori Sadohara (from ANN)
Plot Summary: Basara Toujo 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! (from Crunchyroll)
The Testament of Sister New Devil BURST / Shinmai Mao no Testament BURST
Genres: action, supernatural Themes: demons, ecchi, harem Objectionable content: Intense Number of Episodes: 10 Vintage: 2015-10-09 Opening Theme: “Over The Testament” by Metamorphose ft. Yoko Ishida Ending Theme: “Temperature” by Dual Flare
Plot Summary: While Basara, Mio, and Yuki have picked up their seemingly ordinary lives, they were attacked by magic-wielding humans when preparing for the upcoming sports event. Basara tries to become stronger by strengthening the testament when Rukia, Maria’s sister, suddenly appears. Unknowingly, the war deciding the future of the demon realm has started. (from ANN)
It’s a US streaming CR Kadokawa title, which means it’s very likely a Sentai title.
However, Sentai tends to announce their Kadokawa titles much later, so I expect it’ll be announced some time in the future.