Kenji was born as the second son of three brothers. - His mother, Natsuko, gave the impression that he was a carefree child, but... - One spring, his older brother got a job and lived alone, while his younger brother entered a boarding school. - His father was sent away from home and his life changed in a hurry, and Kenji and Natsukos mother and child began to live together. - Natsuko feels a sense of loss as her lively house suddenly becomes quiet. - Seeing her mother like that, Kenji feels frustrated and empty, and tries to regain his mothers love that he couldnt monopolize until now.