Nukumizu Kazuhiko, a loner with a love for light novels, accidentally sees popular Yanami Anna being rejected by her childhood friend. This leads to unexpected interactions with other seemingly defeated girls like Yakishio Lemon from the track team and Komari Chika from the literature club.

Yanami asks Nukumizu to arrange an adult date. As Yanami's old friends are gradually realizing that she doesn't actually have a steady boyfriend, she wants to maintain her charade with a fake date.