Yuki's sex life with her husband had completely dried up, leaving her tormented by daily frustration. After finishing masturbation in the morning bathroom, she headed toward her son's room to wake him up when she noticed something—her son was already erect, his morning wood fully hardened. Seeing him like that, she couldn't resist reaching out to touch her son as he pleasured himself. In that instant, she noticed his thick, dark morning erection unlike anything she'd ever seen, and overwhelmed by desire, she hungrily devoured it. From that day on, Yuki became obsessed with her son's morning wood, indulging in its pleasure almost daily. She transformed into an insatiable mother, completely captivated by her son's morning erections.