Bameur Geonneun Seonbi

After the fall of her family, Yangsun begins living as a book dealer while hiding her true identity. One day, while visiting Eumseokgol to deliver a book, she meets a breathtakingly beautiful scholar by the name of Sungyul Kim. They find themselves drawn to each other, but their love is stunted from the start: Sungyul is a vampire.

(Source: Tappytoon)