KAM-143 - A wife with ample breasts is tormented to death by her detestable, sexually harassing father-in-law while being spied on during acts of masturbation and infidelity. Kamisaka Tomoko experiences explosive sexual frustration and multiple orgasms.

A 4-year-married housewife lives with her husband's father. Her busy husband is often away on business trips, leading to a lack of intimacy and sexual frustration for the wife, who engages in masturbation. Her father-in-law spies on her and leers. 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 knowledge of the masturbation and affair as leverage to demand sexual favors from his daughter-in-law, threatening to reveal everything to her husband. Unable to refuse, she submits. Furthermore, she is repeatedly sexually abused and violated by the detestable father-in-law and experiences orgasm.