Shiori finally achieved her dream of owning a home, but since she relied on her stepfather for financial support, she was forced to live with him. Her husband was transferred to a distant work assignment, leaving her alone with her stepfather. He was a naturally airheaded man prone to wild misunderstandings, and a constant source of stress for Shiori. To cope, she turned to masturbation as her only outlet. One day, after finishing her self-pleasure session, she fell asleep in a dazed, exposed state. Her stepfather saw her like this and mistakenly believed she had romantic feelings for him. He suddenly lunged at her, grabbing her thighs, and their relationship took a drastic, intimate turn.