After School, R girls high school... Ishizeki Kaoru, a lovely and beautiful girl, getting a sermon from the devil-rapist-teacher Nishijima. Due to poor academic performance, Kaoru had to accept obscene treatment...
-- however, that's just a prelude for much more humiliation and pleasure.
At first, she shows resistance to the humiliation she received, the humiliation which takes in wherever and whenever. But Kaoru, slowly drown into pleasure, bewildered while covered by shame-juice and dripping love nectars.
Furthermore, Kitagawa Harumi - the beautiful homeroom teacher, Arisawa Miki - the school nurse, Ishizeki Yuko - Kaoru's stepmother, and finally Kusama Mana - Kaoru's classmate, also indulged and lost in the ongoing night of rape.