Incestuous relationship, leading to my sister-in-law's pregnancy and continuous assault, resulting in my impregnation and intercourse. (Kuriyama Rio JUQ-647)

Stepbrother Yuta temporarily stayed at their home while looking for work. At first, Rio accepted him with a smile, but Yuta secretly developed feelings for her, frequently spying on her and her husband's sex life, and even stealing her underwear and other personal belongings. Although he sensed Rio's reluctance, he was still dominated by desire and ruthlessly assaulted her. Rio experienced intense pleasures that she couldn't experience with her husband, and these pleasures gradually took over her mind…