At the end of her first year of high school, Futaba has a fateful reuion. Tanaka Kou, her first love -- who transferred without warning and disappeared from her life in middle school -- appears before her for the first time in three years.

Futaba has volunteered to be class representative for her new class, and so has Kou. They're all set to participate in an overnight leadership workshop with event representatives Yuuri, Murao Shuuko, and Kominato Aya. However, a troubled start to their morning foreshadows anxieties down the road, and a bad vibe hangs over the team...

Yuuri reveals to Futaba that she's in love with Kou. Futaba's feelings about her long-awaited friendship struggle against her budding feelings of love. Futaba decides to suppress her feelings for Kou so as not to lose her friend, but class representative work puts her alone together with Kou.