ROE-151 Days of play with my mother at my parents' house where the whole family left the nest. Yumi Anno

Tatsuya was born as the second son of three brothers. His mother, Yumi, had the impression that he was a quiet child who didn't assert himself, but... One spring, my older brother got a job and lived alone, while my younger brother enrolled in a boarding school on sports recommendation. My father moved away from home and his life changed in a hurry, and a mother and child began to live together. Yumi feels a sense of loss as the bustling house suddenly becomes quiet. Seeing his mother like that, Tatsuya feels an indescribable jealousy, and tries to regain his mother's love, which he couldn't monopolize until now.