Basically, Sangwoo plays a game of carrot and stick with Bum. Carrot in how he takes Bum out to go shopping. Stick as in how he leaves Bum alone at the shop to tease him and scare him. At the end of the chapter, I'm assuming Sangwoo is texting about bringing Bum to a party of some sort with "friends" of his. Malice included in the text or not.
It's just a special chapter of the characters would be like if they had jobs. It's not part of the actual story.
I think it shows jobs they had prior to the story. Now matter what job Bum has, he's a schmuck--and no matter what Samgwoo does, he is adored and people want to be like him--especially Bum. Bum notices gay men and Sangwoo. Sangwoo notices how easily he manipulates people.
Is the cop with glasses in a few panels or are my eyes playing tricks on me? (Does he say "Come on, move?")
Can someone explain me the last chapter I didn't get it smh (I'm not using sarcasm)