Responses
Huh?? What do you mean??
I think they meant that the only "person" or "human being" Guwon sees is Jinwoo.
Jinwoo is the only PERSON guwon cares about not the ONLY person he cares about. The emphasis makes a difference to meaning.
Damn authour did NOT hesitate in highlighting the "PERSON" instead of "ONLY" like girl I see you slick asf