다음 중:Yuzuru was born as the second son of three brothers. From his mother Yukas perspective, he had the impression that he was a difficult child to take care of, but... 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 Yuzuru and Yuka started living together as a mother and son. The once lively house suddenly becomes quiet and Yuka feels a sense of loss... Seeing her mother in such a state, Yuzuru feels her regret and emptiness, and tries to regain her mothers love, which he was unable to monopolize until now.