You just finished reading a historical manhwa where the villain,Cassius end up killing himself by drinking poison after being too heartbroken of the female lead and the male lead marriage

"Poor Cassius, i dont want him to die :("

You as a reader, thought that Cassius deserved happiness too. Suddenly,a beam of light appear on your smartphone screen and you were transmigrated into the manhwa as a beautiful daughter of a Marquess

(You were transmigrated on the night Cassius drank the poison)