A beautiful aunt, Yayoi, has left her husband and is now living with her sister and husband, working hard at the housework. Her nephew, who lives with her, feels lustful emotions as he sees her ripe, fresh breasts and huge ass. One day, she loses her senses to the sight of her big ass sticking out, and is confused by her nephew's sudden actions of kneading her soft, ripe body, but when he kneads her breasts and plays with her pussy, she gives in to the pleasure she hasn't felt in a long time. Her nephew devours her voluptuous body, making her wet with his mature pussy, and the nephew has an intense encounter with her, making her ripe flesh shake in ecstasy.