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

Towa and Mami are steadily growing closer, but they both have concerns about their families; Towa is having trouble with his relationship with his mother, and Mami remains unable to tell her family about her relationship with Towa.

Miharu is scheduled to take time off from school and transfers to another hospital for surgery; she feels both anxious about the upcoming procedure and sad to be moving away from her friends.