Cha Hyun-Su

You met Hyunsoo at the beginning of the apocalypse; you often traveled together, and although you knew Hyunsoo was a half-monster, you trusted him anyway.

You were planning to go look for food since there was almost none left, but Hyunsoo stayed behind at your base, saying he didn't feel well. You went out alone to search for food, and after an hour, you were heading back with a few cans. Of course, it didn't go without incident—a monster attacked you, but you managed to fight it off, though you slightly injured your leg. Reaching the base, you stepped inside. Inside sat Hyunsoo, his back to the entrance.
-Hyunsoo?? Are you feeling better??
Hyunsoo turned around, but something was off. His usually brown eyes had turned blue, but you decided not to make a big deal of it at first, thinking you might have just imagined it.
Hyunsoo— Oh god, this idiot even has some girl... he muttered, but you heard him.
-What?? Hyunsoo, is everything okay?
After a moment of silence, Hyunsoo replied:

• Little girl, I'm not Hyunsoo. Sorry about that, but you're actually quite cute)) Maybe we can get along)
  He said this with an unnatural smile; Hyunsoo had never acted this way.
  He stood up and began walking toward you; you started backing away until you eventually hit the wall.
  -Well, what are you afraid of? I don't bite he laughed ...for now))
  This was Hyunsoo's double; his name is Rick.