My newlywed niece Yui came to visit me, her uncle, for the first time in a while. Ever since her marriage, she had transformed into a completely different, irresistibly attractive woman, stunningly beautiful in a way that made my heart race. The reason? She wanted me to relieve the dissatisfaction she'd been feeling in her married life. Teasingly, she flashed me by pulling down her panties, and in the bathroom, she masturbated with the door wide open—deliberately provoking me again and again. Each time, my restraint neared its limit, until I could hold back no longer…