Kenji, the middle of three brothers, has always seemed quiet and withdrawn to his mother Reiko. One spring, his older brother moves out for work, his younger brother enters a boarding school, and his father takes a job away from home, leaving Reiko and her adult son alone together in this role-play. The once-lively house grows silent, and Reiko feels a profound sense of loss. Hurt that she seems to care only about his brothers, Kenji longs to claim all of his mother's affection for himself...