KAM-233 - Witnessed infidelity and masturbation, then forced sexual acts by a disliked father-in-law, resulting in intense arousal for the voluptuous wife. ... Nishimura Nina

A three-year-married housewife lives with her husband's father. Her busy husband is often away on business trips, leading to a lack of marital intimacy and the wife engaging in masturbation. However, her father-in-law spies on her. One day, a delivery driver, with whom she is having an affair, comes over and they have sex, but the father-in-law is watching again. The father-in-law then uses the witnessed masturbation and infidelity as leverage to demand sexual favors from his daughter-in-law, threatening to reveal everything to her husband. Unable to refuse, she opens her legs. Furthermore, she is repeatedly aroused during nighttime rape by her disliked father-in-law.