Kaho returned to her in-laws' house, where her father-in-law lived alone, for her husband's mother's grave visit. That night, she tried to seduce her husband, but he didn't respond, leaving Kaho to console herself alone. Witnessing this, her father-in-law felt resentment towards his son, who left Kaho unsatisfied and went to sleep first. The next day, while Kaho was cleaning her room, her father-in-law approached her, saying he could make her orgasm multiple times. Despite her initial resistance, Kaho found herself repeatedly climaxing under her incestuous father-in-law's touch...