It had been over half a year since they last had a husband-wife relationship. Eri's sexual frustration had finally reached its limit. Lying next to her sleeping husband, she deliberately indulged in masturbation. Suddenly, her stepson quietly approached her. "Let me satisfy you instead of my old man," he whispered, forcefully pushing forward an illicit affair. Though horrified and trembling at this immoral act that defied the boundaries of family, Eri found her heart swaying under his sweet whispers and strong, skillful touches. Amid the constant fear of her husband waking up at any moment, she struggled to resist—but gradually, she lost herself completely.