The story begins with Hiromi Maiharu, a girl who moved from Nagasaki to Kamakura. She begins her new life in Kamakura and her first day in high school by bicycling to her school, but she has not ridden a bicycle since she was young. On the way to the ceremony for the first day, she meets Tomoe Akitsuki, and Tomoe helps her train to be better at bicycling.