Did I miss something?

There’s multiple theories about that.
1. Sangwoo didn’t die bc it just doesn’t make sense once you read the story and look at the details. (I can explain this theory if you want)
2. They all had a tragic ending, Sangwoo died, Yoonbum got hit by a car, and the driver was none other then the police officer that caught Sangwoo.
3. Sangwo died but Yoonbum lived
4. Both are alive

Etc. Guess it’s to your imagination.

Can you explain your first theory? Please

The granny said she held the pillow to Sangwoos head to make him stop yelling. She said as soon as she did that he stopped. Meaning she couldn’t have had the pillow held to his head for too long.

If the granny has killed Sangwoo, since Sangwoo was hooked up to the machines the front desk/ nurses would’ve been notified immediately.

2. Yoonbum kept being sent to the wrong room. No one is going to mix up the room of a serial killer. Especially since the police need to know where Sangwoo is at all times. My guess is that they were either trying to make yoonbum lose hope so he could stop bothering them. (Them probably thinking Yoonbum is one of the people protecting outside) or the hospital has to keep moving Sangwoo because of the protesters.

3. Usually there would be people guarding Sangwoos room. (Those people being cops) why was Sangwoos information given out so easily? Especially since Yoonbum didn’t give any identification. This may just be a plot error though.

4. Yoonbum got Sangwoos ashes. The hospital can’t give out a patients ashes just to anybody.

5. This one I don’t really agree with but here it is; the man in the wheelchair has the same/similar burns as Sangwoo. It was even on the same side of the head. (I did a side by side comparison and I think it was just to give Yoonbum the flashback idk if that was really supposed to be Sangwoo)

6. This is the most important one. Seungbae went to the hospital to find yoonbum. When seungbae (the cop) asked the lady at the desk where Sangwoos room was. The lady quickly replied that Sangwoo had died. Seungbae then was really surprised hearing that. The lady at the front desk then saw how surprised he was so she had asked him if he was a cop, he said yes, then her answer changed to something like “see me later. Or talk to me later” idk I forget what she said exactly but her answer changed.

My guess is that it changed because Sangwoo didn’t actually die. That was just what the hospital was telling the protesters to keep them off their backs. This is a shady hospital after all.
Plus the hospital has two days to notify the police that Sangwoo has died, and btw they are obligated to tell the police if Sangwoo has died, or what his condition is. That’s why she asked if seungbae was a cop and that’s why she asked him to come back and talk to her.

That’s the theory/theories

Yeah I guess that makes sense. Still hope he died haha. Loved the character but he was a piece of sh*t and that's why I loved him, doesn't mean he should survive haha

I want him to be dead too... I hope they all died tbh. There’s no way Yoonbum would be normal

Well I didn't want the cop dead. But yeah. That's why I wanted to see Bum hit by the car haha