The forbidden relationship between the father-in-law and his wife this time is also that of a former teacher and student, and their mutual love for each other makes their sex more sinister than usual, but also twice as erotic. What's more, the wife is a masochist who is a daddy's girl, and has a very strong sexual desire for the old man. Despite being a masochist, she actively pursues the old man! The contrast between her calm and cute face and her erotic desire to get aroused when she asks, "Please spank my butt," is also a highlight. Please look forward to this forbidden SM-like caregiving between the father-in-law and his wife, who spanks her buttocks in a realistic manner.