Damn.

I think Hwon killed the sister, or arranged it at least. Once she started hurting Woojin. But, I really have no idea, just a guess.

That seems kinda plausible and Woojin saw the whole thing but it was so traumatic that he 'supressed his memories ' of the murder and of Hwon as a whole. (Actually there's no such thing as supressed memories, especially traumatic memories people are unable to forget those).

And just remembered something, you remember how Hwon said he was in juvie? That could TOTALLY be the reason why he was in there. God, that makes so much sense.

And WHAT IF the beggar is somehow involved with the murder? Like, they try to frame him or something or idk but this beggar I feel like he's gonna play a role later on maybe, anyways I'll stop now. lol

If he only had to go to juvie after what he did then that's pretty sad...

OMG this thread cleared up so much for me... Hwon is his childhood friend who killed his sister because she started hurting him... But their hairstyles don't match. The beggar's hair is much straighter than his childhood friend. I also feel like the childhood friend knew the beggar because when he first saw him, he didn't say anything but went along with MC to make fun of him. So, Hwon could be the beggar, too.

Yall theories are crazy but make so much sense at the same time too and yup thats what i think also

I think this story is making us think so much that we might beat those detectives.seriously feels like were solving a crime scene or something... (=・ω・=).

lmaoooo omg same x'D