One night, three former close friends from college days gather around a kotatsu to drink, and a long-hidden secret surfaces—each had feelings for the others back in school. Now married to one another, the couple can't suppress their passion any longer. While the husband is passed out drunk, the two of them give in to their desires and ignite a heated affair. Tomomi, once overweight, now has a voluptuous, sexy figure. The fact that it's the man she once loved only heightens her sensitivity, and she quickly becomes eager, craving more. They progress to bareback sex, and she moans intensely beside her sleeping husband as he thrusts hard into her. After reaching a satisfying creampie climax together, the moment is shattered when the husband suddenly wakes up.