At a secluded school nestled in the mountains, affluent young women receive an education tailored to their standing as elite ladies. however, these girls are also isolated from the outside world, preserving their innocence. recently, there has been a concern that graduates struggle to adapt to modern society after leaving the school. to address this issue, they have decided to take a unique approach: enrolling a male commoner student, kagurazaka kimito, as one of their own. kimito was chosen because he appears ordinary, but the school leaders also speculate that he is homosexual with a muscle fetish. when informed about the possibility of castration to safeguard the girls' purity, kimito willingly agrees, eager to endure the attention of numerous high-class young women who are disconnected from reality.