The Obsessive Male Leads Want to Eat Me Alive

A young woman possesses an extra in a depraved adult BL novel and meets the young obsessive male lead (top). After being bullied by the bottom for years, he turns to a darker path in adulthood and becomes the crown prince, indulging in imprisonment, obsession, and all sorts of heinous adult past-times. She decides to change the story for a happy ending. (Source: NovelUpdates)