Vampire Heart

On the night of a full moon, Do-Gyeong runs into a vampire with blood dripping from the corners of his mouth. Haunted by the encounter, he tries to dismiss it as a dream...but not only does the vampire go to the same school as him, he begins following him around everywhere! Do-Gyeong is horrified of course, but as time passes, he discovers some peculiar quirks about the creature: he prefers his meat well done, flinches at the sight of cats, and loves to cuddle. Who is this mysterious vampire, and why is he so fixated on Do-Gyeong?

(Source: Lezhin, edited)