Se-yeon died unjustly due to her boyfriend’s obsession. Upon waking up, she found herself possessing an Extra, Princess Priscilla, inside a novel. The extra character that appears at the beginning for a few lines and dies. On top of that, Priscilla was a concubine to a war-obsessed Emperor. “The moment the Female Lead shows up, I can be free!” I just have to survive until the Female Lead shows up, but why is the Emperor obsessed with me?