Toji Seryo, a well-liked freshman in high school, has a reputation for agreeing to date anyone who confesses their feelings to him on a Monday, only to end the relationship by the following Sunday. Meanwhile, Yuzuru Shino, a senior at the same school, is known for his attractive appearance, yet he has a history of being dumped by his past girlfriends. Intrigued by Toji’s peculiar dating pattern, Yuzuru, in a mix of jest and genuine interest, decides to ask Toji out.