In an attempt to escape the constraints of their rural hometown, Futoshi and Kirino ride their bikes toward Tokyo. But Kirino seems distracted—and with good reason. Upon learning of his mother’s worsening health, the two return home. As their summer journey ends, both boys are led toward a choice: to accept or let go of their identities. “It was like a treasure… I was really happy.” The fleeting summer of youth—how will it end?