It's been a few months since my mother fell out of love with my father and left home. My father, who thought it was bad because he couldn't do housework in a male family, suggested hiring a housekeeper. A few days later, Maiko is dispatched from the housekeeper center. Maiko, who is full of motherhood and has sex appeal, couldn't hide her excitement with her brothers Natsuo and Hayao. One day, Shun is taken out to the living room where his father and Maiko are when he shows him something good from his brother, Natsuo. - And the sight of Maiko serving her father jumped into my eyes ...