I mean...

*gasp* since it was bothering me so damn much I had to go back and check. Sangwoo's dad from chapter 5 looks totally different from the dad in chapter 40. What the hell. Ok. I am gonna stop. This speculating is gonna drive me nuts. Put then phone down. Go to sleep.

I'm mind fucked right now....wow. Maybe that was the secret that Sangwoos mom said she had. Is it possible that the mother got pregnant by the uncle before she got married? We dont know anything about how Bum came to be with his grandparents. Just that the mother died. But who are Bums parents? Bum IS four years older than Sangwoo, and maybe she got married after she gave birth to Bum.....your theory is amazing. And it makes the most sense. I love it. (⊙…⊙ )

I know right! The uncle did say his brother was tall and handsome. The dad from chapter 40 looked a lot like Sangwoo, but the dad from chapter 5 looked.. well... more like the uncle (which would make sense if they were brothers). Sangwoo was afraid of the ch. 5 dad, but got excited to see the ch. 40 dad -- and he was about the same age in both memories.

So! If this theory is true, was dad #1 actually the uncle? Or are we dealing with 3 men instead of two?

Of course they could be not related at all and it is just a giant coincidence that Bum looks so much like his mom.

Either way, it is totally starting to look like Sangwoo's mom had shitty luck with men and maybe went a little insane. Maybe she was so possessive of Sangwoo because he was a "Good boy" and the only one who didn't hit her. I bet she killed the dad and Sangwoo (since he seems so obsessed with her right back) tried to cover for her by mutilating the body... which probably drove him a little insane. I wouldn't be surprised if him killing his mom was some kind of accident. Like maybe she really tripped off the wire and he had to kill her in self defense or something-- which I think would have been the final blow to do in his sanity. He just seemed so normal as a kid. There had to have been a breaking point.

And also, remeber how the Uncle stumbled upon Bum when he was being escorted back into Sangwoos house after interrogation? How did he know Bum was there? Or was he [Uncle] looking for Sangwoo? And Bum also didnt tell Sangwoo about his Uncles visit, so we will never know why the Uncle was there in the first place.

I wonder, if due to Bum's known mental illness and his interactions with the police, that his Uncle was appointed his guardian. Bum might be 26, but if he was deemed to have diminished capacity, then his Uncle might have been notified by the police about his new address? This seems the only plausible option I can think of at the moment, as I doubt the Uncle found Sangwoo's house by accident.

Maybe, but Bum was living on his own before. So after 18, there is no need to take care of him. Because the Uncle said that Bum left him. Honestly, I dunno

Yeah, I wondered about that too, but then I remembered that Sangwoo went to get Bum's stuff from his old apartment, so he had been living alone. Still, the police could have easily told his uncle where he was if they had a reason to. Like if they had reported him missing or something after so long without contact. But I don't know if that is the case or not. There was never any indication of anyone reporting him missing. I am sure that cop would have recognized him as another victim WAY early on if that had happened. And as it turned out, they were able to get away by saying they're in a relationship, so there was no reason to tell anyone anything. Unless a report had been filed, I don't know if the police would go through the trouble of finding Bum's relatives and telling them where he was. So, we either have a gaping plot hole here, OR there is some connection between their families that hasn't been revealed yet.
OR! I could be totally wrong. Those detectives paraded Bum in as a victim, so maybe it is some kind of protocol to find the closest relative and let them know he'd come in? But even then... the police wouldn't give out the address of the "suspect" he came in with. But they may have let his name slip somehow when they thought it was all a misunderstanding....

GEEZ! I am talking in circles now. Me and my stupid freakin theories....

The police told his uncle where Bum was. The uncle said it himself. The other cop brought Bum home and once the cop was gone the uncle showed up. Then his uncle left and the cop took Bum with him.
It all looked very staged to me.

Yeah, you're right. I am still wondering what the cop is planning with all the DNA he took from bum. Ignoring the fact the the cop is like, super right on his hunch, he seems like he is reaching that breaking point too. Sangwoo better not start running off at the mouth at home about killing those girls like he did at the restaurant. Didn't the cop bug the house?

We don't know if he really spies on them. It's a plausible theory but nothing has been revealed yet.
But I think that Seungbae will be back soon and we'll find out.

Oh. I thought he did. didn't it show a recorder in one of the rooms on like, the first episode of season 3? I could have dreamt it, lol. I tend to read these things late at night after work.

Guys, the uncle was a hallucination.
When Bum woke up, the blood on the floor was gone.

Oh my God you're right. And not just the blood on the floor, there was also no blood on the knife. The uncle was really never there.
Once you see it it's so obvious (⊙…⊙ )

That really happened but we don't know what it was he listened to. Some say it was a record from when they were at the police station, others believe he listened to them talking in Sangwoo's house.

Oh that tricky author. Lol, I had noticed it being gone when he was dreaming about Sangwoo telling him to open the door, but I didn't notice that it was still gone when he woke up for real. So he was just running around the house screaming at shadows. That is scary as hell. In that case, what can you really believe when we're reading along with Bum? How much of what we know so far is real and how much is just him hallucinating? I wonder if it is some kind of PTSD from what his uncle did or if it is something else. Geez. now I am questioning it all.

Definitely.
I mean, Bum also hallucinated something with Sangwoo in the early chapters even though he didn't know the real Sangwoo at that time for so long as well as the body parts in the washing mashine though Sangwoo said that he saws the limbs of his victims so maybe they were really there once, before Bum was with Sangwoo.
But those are the only scenes we've seen him hallucinating so far, I think??

I guess if somebody can figure out what exactly the red and purple shadows mean it might be possible to tell the difference (e.g. purple means hallucination or trauma). The problem is that it might take a while to figure it out since you have to read the entire story again and keep track of every single scene with these shadows in it.
I don't really have the time for it right now but maybe somebody else is crazy enough to do it.

Well I looked back to Chap 7 when Bum hallucinated the limbs and Sangwoo, though there were no special colour shadows, I thnk Koogi simply began to do it more often and clearer in S2.

What I found out after re-reading it though, was that ma theory about Bum getting money in return to sex with his uncle might be right.

In Chapter 1, we saw in both scenes Bum alone in his apartment, though that could've been when the uncle was at work.
In Chapter 5, he said that he lives with his uncle though when Sangwoo went to the apartment, nobody was there, again, the uncle might've been working.

And back again in Chap 7, he asked himself if he really wants to go back there, when he was about to leave Woo's house, even prefering( http://www.mangago.me/read-manga/killing_stalking/mf/c007/53/) his shitty uncle after he saw Sangwoo killing him in his hallucination and made him have a breakdown.

There were red shadows whenever he saw Sangwoo. At the beginning of the chapters the red shadow was there when he opened his eyes and when he saw the bodies (not in the panel in which we see the bodies, the one that shows Bum's expression).

Right. Though I dunno what the red shadows meant when he opened his eyes.
Maybe the hallucination already started there.