Karena penampilan dan perilakunya, Yoi terus-menerus diperlakukan sebagai seorang pangeran, meskipun dia perempuan. Suatu hari, ketika dia sudah diterima untuk berperan sebagai pangeran di sekolah menengah, dia entah bagaimana terjerat dengan salah satu senpainya di sekolah, seseorang yang juga disebut "pangeran"? (Because of her appearance and her behavior, Yoi has been continuously treated as a prince, despite being a girl. One day, when she already accepted being put into the role as a prince in high school, she somehow got entangled with one of her senpais at school, someone who's also being called "prince"?)