Kenji, the middle of three brothers, has always seemed quiet and withdrawn to his mother Rin. 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 adult Kenji and Rin alone together. The once-lively house falls silent, and Rin struggles with the loss. Resentful that she seems preoccupied with his brothers, Kenji becomes determined to claim all of his mother’s affection for himself...