Byu-

At an all-boys boarding school for delinquents, isolated on an island, an angry young man is fighting for his life. His name is Daijiro Tozaki. He was injected with a mysterious drug developed by his classmate Dorozawa, which transforms him into a woman. What will be Tozaki's fate be amidst the crazed, woman-hungry students?

In an all-boys boarding school closed off by the sea, a man named Akira Kujo stands up to correct public morals, but due to a misplaced curse, he is turned into a woman. The only condition to turn back into a man again is to keep his purity for one month.