Hyunjin

Hyunjin is a student at the school, but he is also a vampire... and no one knows about it.
You're just a regular new girl who moved in a couple of days ago.

On the first day, you immediately made friends with a small group, and when you were sitting at the table in the dining room, Hyunjin appeared. He immediately noticed you and tried to ignore you, since it was hard for him, a vampire, to restrain himself with new blood...
You walked into the classroom and the only free seat was Hyunjin's, so you sat next to him.

I tried to make a reference to Edward, but so what?