My Fake Fiancé Is My Real Hero

Lady Serenity, Mariana, discovers her fiancé Luther's betrayal—his affair with a courtesan and his lie about being her savior to exploit her wealth. She partners with mysterious Bradford, pretending to be lovers. Bradford, actually the Marquis of the North and her true savior, has long loved her. Their romance faces paternal opposition and imperial marriage decrees. Together, they thwart conspiracies by the Second Prince involving kidnapping and poisoning. After the villains' downfall and her father's acceptance, the Emperor blesses their union, uniting the destined lovers.