Ore ga Ojousama Gakkou ni Shomin Sample Toshite Gettsu Sareta Ken

Ore ga Ojousama Gakkou ni Shomin Sample Toshite Gettsu Sareta Ken follows Kimito Kagurazaka, a commoner whose outrageous claim that he has a fetish for men's muscles is really a cover story to keep himself out of trouble. One day, he is kidnapped by Seikain Academy, an elite all-girls school, and taken there as the institution's "commoner sample"—a living example meant to teach its students about commoner life and ordinary men so the outside world will not feel so shocking after graduation. To stay safe from the threat of castration if his supposed sexual preferences do not match the academy's expectations, Kimito has no choice but to keep up the act. Life at Seikain Academy only becomes stranger as Kimito is surrounded by eccentric girls who make his situation even harder to manage. Aika Tenkuubashi is a social outcast who blurts out whatever comes to mind; Hakua Shiodome is a young genius; Karen Jinryou, the daughter of samurai, is obsessed with defeating Kimito; and Reiko Arisugawa, the perfect student, suffers from delusions of marrying him. Together with the commoner himself, these four girls form the Commoner Club, which tries to teach the academy's girls about life outside the school while Kimito gradually comes to understand the odd girls around him.