Kenji was born as the second son of three brothers. From his mother, Natsuko's perspective, he seemed like a child who didn't need much help... One spring, his older brother got a job and lived alone, and his younger brother enrolled in a boarding school. Their father moved away from home and their lives changed rapidly, and Kenji and Natsuko started living together as a mother and son. The once lively house suddenly becomes quiet, and Natsuko feels a sense of loss. The state of her mother