In the midst of a perfectly ordinary life, Momoko's world is turned upside down. She is unexpectedly sent to a prestigious all-boys boarding school, where she must navigate a new environment and conceal her true identity as a girl. Forced to share a room with a roommate she dislikes and wear uncomfortable clothing, Momoko's situation is only compounded by her own frustration and despair. As she struggles to maintain her secret and avoid detection, Momoko finds herself surrounded by handsome classmates who, despite their obvious interest, remain oblivious to her true nature.