After transmigrating into the body of the duke's most despised daughter, all she wanted was to live a quiet and low-key life. But fate had other plans. When the arrogant Crown Prince insisted on breaking their engagement to be with her sister, she calmly agreed—and made him look like a fool in front of the entire court. When her scheming sister tried to frame her for theft? She turned the tables, leaving the girl utterly humiliated and socially exiled. And when the Crown Prince came crawling back, begging for a second chance? She dismissed him with a single, icy wave. But just as she was savoring her quiet victory, a mysterious and powerful figure swept her off her feet! 'Hey! Who are you?' she cried. The real game is only just beginning. A witty and sweet historical counterattack. Happy ending follows her success.