Mother・sayuri and son・nori were on a family trip together. Nori, who had always been shy, became listless due to an incident: he witnessed his father's traffic accident several years ago. At the time, there was still some distance between him and his stepmother, sayuri. Since then, nori has been going to a psychiatric hospital. This trip is part of his treatment, taking him to a factory's rest home. However, this trip, sayuri…
