Sasahara Urara visits her lover's house for the first time. Usually, his wife is home, so they've always had sex at hotels. That's because the man is married. With his wife nearing childbirth and staying at her parents' house, today the two are finally alone together. Relaxing in the living room, they gradually grow affectionate, gazing into each other's eyes and exchanging kisses. Urara teasingly swings her legs, seducing him with a blowjob. The man passionately gropes Urara's big tits while licking her soft skin. As the erotic tension builds, Urara shyly suggests moving to the bedroom. The man, prepared for this moment, gifts her a sexy swimsuit. Seeing her in it makes his heart race. On the couple's double bed with matching pillows, Urara feels jealous of the wife's presence and deliberately rubs her scent onto the husband's pillow. Soon, they start making out on the bed, and as he gropes her large breasts, the man reaches his limit. After receiving a handjob and titfuck from Urara, he can't hold back any longer and begs for sex, but she keeps teasing him until he's on the verge of climax. The taboo thrill of having sex on the married couple's bed excites Urara, driving her to passionately crave his body. Responding to her desire, the man gives in to his heated impulses—the two devour each other like lustful beasts.