
Originally Posted by
Arwyn
That's one of those good questions that I hope will eventually get answered as the story progresses.
From all indications, Mu Young, aka the sniper guy, knew Jin and Jin's grandmother way before the story starts so his attitude towards Jin may have started as brotherly love, as in the big brother looking after a younger brother, but gradually blew out of proportion to him wanting to take care of Jin like a father and adopt him.
As for the male friend that appeared in school I think its just a minor side character to show Jin does know some kids his age.
And no, Jin really isn't a normal human. When he's been threatened, first by those two Chachaoong in the chapter 3 and then by Eun Yul in the later chapters, something/somebody takes over and he's able to wield either two big weapons or change his arm into a weapon. But after he get taken over he can't remember what happened.
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