Responses
I thought we already established that Guwon is not entirely human
Okay probably should have worded it more like now we know how unhuman Guwon has been. Not knowing about kissing or romantic feelings is one thing, but to not sleep? That's another level of not knowing how to human
I think he's too stressed to fall asleep. It's not that he doesn't need to sleep, it's that he can't.
Guwon feels like he isn't fully human or at least doesn't know how to be a human. So Teach talking about regular things and truly caring is helping Guwon become more like a regular human. I fear that the kid is dead though....