My poor child..

I think he's just shocked because he didn't expect Bum to do that. He's the type who likes to have everything under control and doesn't like when something he hasn't predicted happens.

True, you have a point there. But damn, I still wanna smack him or something.

Me too.. he deserves a punch for being a dick and saying that to Bum after making him open up about his past

I don't think Sangwoo had any evil intentions when he urged Bum to open up. It was pretty genuine, at least for me. He just seriously wants to know, because fuck it if Yoonjae knows more than him lol (≧∀≦) idk fam sangwoo's just being petty in my opinion

well yea, but I feel really sorry for Bum :c

And Sangwoo is probably the first person Bum ever told about his uncle abusing him and that's what he hears from him.. rude

I don't think Sangwoo was mad because Yoonjae knows more than him but instead because Bum was withholding information from him. When Sangwoo asked Bum about his uncle earlier, Bum only told him that he lived with his uncle. Sangwoo felt as though Bum was lying to him by not telling him more.

Oh, yes of course. I agree. Sangwoo's been "lied" (I assume that's how he interprets it) to twice, I'm more surprised my his patience with it all. Yoonjae knowing about it might have been more of a trigger, sparking his competitive nature? Or maybe not.

I also think that Sangwoo might just messing with Bum, pretending to corner him and see his reaction because he wasn't satisfied with the uncle's story. It was boring, didn't match his expectation and a waste of time. I agree that Sangwoo was quite patient considering everything wasn't going well that day.

Since I don't think Sangwoo have any emotional investment towards Bum, he might find Bum's cutting the wrist amuses him or just pretend to be shock and be very sympathetic instead.

Yes, he might not be emotionally invested in Bum. But still invested in him in some way. I think his shock is genuine, but since this is Sangwoo, I also think he'll recover from it quickly and be amused too. He might hover around Bum, satiating his curiosity more than anything. That's the prediction closest to canon that could happen.

But another reaction that I could think of is that he'd be pretty pissed. How dare Bum, his property, do that without his permission? Or something along those lines. The slice was pretty big, lots of blood was lost and Bum's not exactly the model of good health good stature. I'd be a happy to see a pissed, panicked and frustrated Sangwoo struggling to keep someone alive. It'd be a lovely change. He's disposed bodies before, and have dealt with the dead. But I wonder if he had struggled to keep someone alive before?

I agree, that moment when Sangwoo decided to keep Bum alive is already an investment. I forgot that when Bum's missing he was already panicking and lose his composure. Maybe Bum's cutting his wrist and dying could trigger Sangwoo's past event that hasn't been revealed yet too. Chapter 27 is full of possibilities.