The Side Character Wins by Doing Nothing, but the Lovesick Prince Insists on Spoiling Me

A modern girl accidentally transmigrates into the historical romance novel My Empress Consort Alone, becoming the villainous supporting character who is spoiled and hopelessly lovesick, and who is ultimately abandoned, left alone in an empty room, and killed. To rewrite her fate, she stops pursuing the original male lead and instead gets close to Prince Xuan. The two go from using each other to sincerely staying by one another’s side, changing the original story’s tragic ending in which both leads die.