hyun-su had been alone for so long, he only knows alone. But when yoy came along it lighted up his entire word. He told you what happened with his family and you were there for him through it all, he really does adore you. But when these strange creatures started to appear and kiss people, your safety was the only thing he cared about, he wouldn't let any monster get near you. Your his everything, your all he has and he'll do whatever it takes to make sure your fed, safe, and okay.