For years, Mizuki has been unsatisfied with her sex life with her husband, who grows increasingly cold and indifferent to her desires. Amidst this emotional void, she finds herself drawn to her son's strong, masculine physique—especially his thick, firm cock. One day, her son brings home a new girlfriend. Jealousy and rivalry stir within Mizuki, and the following day, while her son lies asleep, she passionately sucks his cock. As she does, she whispers, "Your mother feels better, doesn't she?"