My Bargain Billionaire

Murdered by her jealous sister for a "lucky" engagement, Molly is reborn with a cruel twist: her sister steals her fiancé, and she is forced into a marriage in the slums. But her new, seemingly destitute husband holds a secret—he is a hidden billionaire. As her sister gloats over a stolen victory, Molly's true status as the billionaire's wife is unveiled, setting the stage for a meticulous and satisfying karmic revenge served from the top of the empire she now commands. If you would like to explore a different tone—for example, making the story darker, more romantic, or focused more on the sisterly rivalry—I can adjust the logline accordingly.