Three years after leaving home, her long student life came to an end in a blink of an eye.A little lonely way home without her parents, it was her mother-in-law, Yumi, who came from the other side with a smile.Yuu couldn't hide her happiness at the visit of her mother-in-law, who secretly considered her a woman. Yumi arrives at the inn with him taking care of her while she is excited about her graduation celebration.Then, he receives a gift from her mother-in-law, who she admires, to celebrate her departure, and he becomes an adult again.