As a married woman working as a health teacher, Haruka-san makes her final appearance in an AV. Previously, during her pregnancy efforts with her husband, they often had unprotected sex, but after facing setbacks in conceiving, she had been deprived of the raw pleasure of an erect penis for quite some time. To re-experience that delightful sensation, she proposes an all-raw sex session on this day. The guilt she feels, which she can't confess to her husband or students, is swept away by the pleasure of raw internal ejaculation.