Pimallineun Gwadaesaenghwal

A cute guy with an angelic face? Check. A cold and aloof outsider with a cat? Check. A class full of vampires? Check... Wait, what? All her life, Seon-Ha Shin has lived in the shadow of her sister, Seong-Hye, who is one year older than her. Luckily, there is one thing Seon-Ha does better than her sister -- donating blood! When Seon-Ha gets special admission into a prestigious university as a blood donor, she finally starts to feel like the main character of her life. Little did she know she'd be surrounded by vampires! (Source: WEBTOONS)