Kenji was born as the second son of three brothers. His mother, Aoi, gave him the impression of being an easy child to take care of, but... One spring, his older brother got a job and started living alone, while his younger brother enrolled in a boarding school. Their father was transferred away from home, and life changed drastically, leaving Kenji and Aoi living alone. The once lively house suddenly became quiet, and Aoi felt a sense of loss... Seeing his mother's behavior, Kenji felt frustrated that she was only concerned about his siblings...