There are still a lot of questions in my head. Who was it that his father was smashing? Wh...

There are still a lot of questions in my head. Who was it that his father was smashing? Who was it that said "he's not alone"? Who was it that was following him?

From what I can see, his father probably stole a water bottle from the hounds team's goods when they were getting supplies or from the village. But if he did stole from hounds, why Guwon with them? Are they not tasked with getting supplies while Guwon stay in the village? But if he stole from the village, why can he get in? Is Jinwoo and his father initially from the village? Why is his head in such a bad state? Why did Guwon made him drink? Is Jinwoo an unreliable narrator? Is Guwon actually a part of himself, that dark side that he refuses to accept? Like Shutter Island? Or am I missing something because I already forgot some details becauss I read too much manhwa?