Disgusted by the irresponsible and talkative Honda, serious class representative Mami has been avoiding him. However, even when Mami begins avoiding him even more after a certain incident at the convenience store, Honda is undeterred.

When Honda spots Miharu having a friendly conversation with their classmate Sanagi Nasa in the waiting room of a hospital, he decides to investigate Sanagi's identity and his relationship with Miharu for the sake of his best friend Mishima.

With the Sports Festival coming up, Mishima and Honda's classmates have high expectations for them as members of athletic clubs.

Mishima worries about Miharu's absence from the cultural festival. Mishima's class encourages Nakajima's childhood friend Sasaki Waka to run in the student council elections.