Mawangnim-eun Juggo Sip-eo

Jinjoo has suddenly been transported into her favorite fantasy romance novel. This might sound like a dream come true, but Jinjoo is stuck in the body of the story's villain, Demon Queen Astreia! If she doesn't change the storyline, she will inevitably be slain by the fierce warrior, Caine. To prevent her demise, Astreia sets out on a journey to end the war between the human and demon realms. But can she win the trust of not only the parties in question but also of her suspicious companion, Caine? Or is her destiny bound to the novel's pages?

(Source: Tapas)