Kanagi ~Inmu Gakuen~

Life at school. Dreams at night. A charm for luck in love that's popular among girls. A series of unnatural deaths... Reality is gradually changing. As our heroine, Kanagi, has her bizarre dreams at night, her school is gradually consumed by a depraved corruption. Eventually Kanagi's friends Makoto, Chisato and Junko are involved. Their minds are soaked in the madness, in class, in the student commons and even in their dreams. A grand scene of sexual depravity unfolds. Will Kanagi ever be able to break free from her obscene nightmares?

[From DLsite English]