The Prince Regent's Heiress

Lila Winslow transmigrates into a novel as a supporting character. As the Legitimate Long-lost Daughter, she chooses a carefree life. Drugged by the Fake Adopted Heiress, she climbs into Prince Regent Sterling's courtyard and proposes marriage, leaving Kieran Sterling intrigued. Lila fights back, forcing the Fake Adopted Heiress to apologize and winning the household's favor. She crosses paths with the Prince Regent, outwits rivals, claims victory.