Kenji, the middle of three brothers, was always the easy child in his mother Sakura's eyes. Then 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. Kenji and Sakura are suddenly left living alone together. The once-lively house falls silent, leaving Sakura with a deep sense of loss. Hurt and frustrated that she keeps thinking only about his brothers, Kenji tries to claim all of his mother's affection for himself...