11 Eyes
Satsuki Kakuer lost his sister because of suicide and since then lives a boring life. Once he is transferred to the strange world of "Red Night" together with his friend Minasaya Yukey and six other classmates. To survive and avoid the red night, they must defeat six black knights to return home. Adapting a computer game for adults 11eyes - Tsumi to Batsu to Aganai No Shoujo-from the LASS developer.