11eyes
11eyes イレブンアイズ , 11eyes -Tsumi to Batsu to Aganai no Shoujo-
Satsuki Kakeru lost his sister to suicide and has lived a dull life since then. One day, he is transported into a strange world called "Red Night" along with his friend Minase Yuka. To survive and escape from Red Night, he fights against Dark Spirits (Ralva) and Black Nights.
