Ayumi, the wife, in her journey to find children, immerses herself in sweaty day-long affairs with the young man who lives next door in the newly moved-in apartment... After moving, Ayumi hopes her husband will be more enthusiastic about their baby-making plans, but his indifference remains unchanged. Losing patience, Ayumi decides to seduce the neighbor by not wearing a bra, planning to conceive with a man who is not her husband. After confirming that her blood type matches her husband's and the ovulation date, the wife, at the peak of desire, plunges into an affair aimed at conceiving, with sexual encounters focused on getting pregnant...