Akdangui Ireobeorin Ttari Doeeotda

A character takes over the body of a nameless extra in a novel, later discovering she is the missing daughter of the villainous Grand Duke. Described with black hair and purple eyes, the extra is marked by a curse. The character believed she was a minor figure, but learns her true identity as the villain's lost daughter. She is reunited with her father and brother, who are known for their cruelty but are unexpectedly kind to her. Moved by their affection, she wants to change their tragic fate, having possessed the body ten years before the original timeline. She is determined to alter the grim ending of her newfound family. However, the male lead's sudden declaration of love for her causes confusion.