Katsura Haruka, a health teacher popular among students and in her fourth year of marriage, makes an AV appearance. At the recommendation of a friend, the sexually ravenous Haruka came to listen to the proposal and, unable to suppress her pent-up desires, decided to participate. With her lustrous body and beautiful breasts exposed, once sex begins, she forgets her guilt towards her husband and immerses herself in the pleasure of the penis. She returns home with a cheerful expression.