Based on

Movies like Blue Sky (1989)

A road movie about three persons traveling in a campervan on their way to Tokyo, Hamamatsu, and Kyoto. The film is based on the story of the heroine, a young girl named Momo, who was a member of the "21 Faces of Kaijin" gang involved in the Glico Morinaga Incident, and the film's ideas are remarkable, including the use of a tape recording of the actual incident.