Ai nanoni (2022)

Tada (Seto Koji), the owner of a used bookstore, is surprised when a high school girl, Misaki (Kawai Yumi), asks him to marry her, but he cannot forget his old part-time colleague Ikka (Sato Honami). Meanwhile, Ikka, who is about to get married, finds out that her fiance Ryosuke (Nakajima Ayumu) is having an affair.