28-year-old Jun, married to her first boyfriend, enjoyed a happy marriage—until recently, when her husband started coming home late. A woman's intuition told her something was off. Checking the car navigation history, she discovered repeated visits to love hotels. Furious and hurt, she decided to get even by having an affair of her own. Using a dating app, she quickly matched with someone. Meeting him with revenge in mind, she experienced her first act of infidelity—and was overwhelmed by pleasure far beyond her expectations. As her emotions spiraled out of control, she began losing concern for others and became consumed by her own confusing desires.