A rural university with a 90% female student body... but in reality, it's a university where women exist to serve the men—a "Ōoku University"!? Ren, a young man who has struggled with a fear of women, enrolls in Someinoe University, a prestigious institution with a 90% female student body, to overcome his weakness. Adding to the challenge, he moves into a former girls' dormitory where there are only two male residents, including himself. Nervous and unsure about what lies ahead, Ren is shocked when, on his very first day, a cool and composed senior named Kurenai invites him to have sex! Is this the beginning of a rosy harem lifestyle for a man who's uncomfortable around women? ...Or so he thought. Things take a dark turn when a female student’s body is found on campus. The university’s strange atmosphere and the unsettling way the women look at him make Ren question everything. Is this just a school—or something far more sinister? Can Ren escape the dangerous temptations of the women at this 90% female university? If he gives in, it might spell the end. A whirlwind of pleasure and fear awaits in this school suspense horror!