Ayako longed for a child, but her husband had little sexual desire and would ejaculate quickly during a blowjob before falling asleep. Frustrated, Ayako spent her nights indulging in masturbation. One night, her drunken father-in-law returned home and noticed her bathing. The next morning, after her husband left for work, her father-in-law forcefully seduced her. Though initially hesitant, Ayako gradually gave in to the pleasure, syncing with his rhythm. A few days later, Ayako secretly agreed to meet her father-in-law again. That night, after putting her husband’s son to sleep, the two passionately made love. This intense pleasure began to bring new changes within Ayako’s heart.