Sangwoo loves bum, and he is worried about him, and he is so mean BC he was influenced to be mean >~<
It's called acting. Or that's what i think.
Complete act of manipulation. Act innocent, make it seem like self defense for a "loved one", enough lies and he gets away
He's not "acting" when it comes to Bum. He knows he needs him and in some twisted way has come to care for him, but he hasn't cared about anyone in a long time so he's still fucked up. To him Bum is a "loved one" and though he may punish him later for lying he won't kill him.
What the fuck is going on tho? Alluva sudden sangboo is n i c e to bumbum?!?!? W H A T