A married couple returns to the wife's parents' home for the first time in a while. The in-laws warmly welcome them, but when the father-in-law says during dinner, "I'd really like to see a grandchild soon," the wife suddenly becomes upset and leaves the table. Seeing the in-laws' confusion, the husband feels guilty and confesses that his wife has been rejecting him sexually, refusing all advances. Witnessing their disappointment, he feels even worse. Late that night, on his way to the bathroom, he notices a sliver of light coming from his in-laws' bedroom and quietly peers inside. He catches them in the middle of sex. Though he knows he shouldn't watch, his sexually starved body is glued to the scene. Unable to calm his erection, he starts masturbating in secret—until his mother-in-law appears. Flustered, he tries to hide, but she says, "Wait," admitting she gets pent up now that her daughter isn't around. Offering herself, she begins pleasuring him. Starved for touch, he quickly becomes aroused, but her skilled, slow handjob and blowjob expertly deny him release. Just as he's about to explode, she takes him in her mouth and swallows his load. The next day, the father-in-law and wife go out to a nearby izakaya. Awkwardness lingers between him and his mother-in-law after the previous night. As the night deepens, the couple still hasn't returned. Gathering his courage, he heads to his mother-in-law's room. Gently lifting her futon, he begins caressing her. Soon, her pussy starts making wet, squelching sounds. Overcome with desire, he can't resist and thrusts inside her almost aggressively.