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 consistently finds himself being dumped by his girlfriends. Intrigued by Toji’s peculiar dating pattern, Yuzuru, in a mix of sincerity and jest, decides to ask Toji out. This film, adapted from a comic, is divided into two parts: the first part covers the events from Monday to Thursday, while the second part spans from Friday to Sunday.