Dad rarely comes home from work far away, only mother and daughter are left in a big house. Hen's son had reached puberty, so sex was the thing that was on his mind the most, he started watching porn to masturbate and curious about the women around him, and Yokoyama's mother was the one who Hen paid the most attention to because she was by his side all day.
Suddenly one morning, Hen couldn't stand the heat, he approached his beautiful young mother with big buttocks and began...