
thanks for posting my reply! I'll talk about what happens to them in ch. 68 below:
SPOILERS BELOW:
Jung-Won's at home going through what he just saw, then he receives a message from Myung-ha telling him he's outside.
Myung-ha tells him they should stop seeing each other, then there's a moment of silence. Jung-Won speak up asking If it's always been like this, Myung-ha replys,
"I slept with you and kissed you with a body that did that. Disgusting, right?".
Tbh what Jung-Won says next doesn't make much sense but it was something like,
"You didn't do it because you wanted to. You didn't have an erection, and it didn't look good at all. You're forcing yourself to do it, right?".
Myung-ha doesn't reply so Jung-Won starts saying the regular is a bitch and that it's crazy. Then Myung-ha says,
"I'm going to get married."
Jung-Won is like "What?", and Myung-ha says,
"I'm marrying that person."
Jung-Won asks if it's because of Myung-ha's mother, because of money. Grabs Myung-ha saying,
"Don't do that Hyung, please don't do that. You'll regret it, please listen to me."
Myung-ha asks, "So what should I do? What should I do, Jung-Won..." "You can't possibly know what's good and what's bad." "I'm sorry, Jung-Won. I'm really this kind of guy. I'll do anything for money. Thanks for everything." And then walks away.
There's more in the chapter but it's focused on Yoo-Gon.

idk i didn't really understand they don't clarify too much.
yoogon's sister came to the club and told him that their died and that they have to split his money or his will or whatever and yoogons like no thanks i dont want shit and leaves and it's obvious there's like some beef between yoogon and his family they treated him like shit probably.
then after that yoogon got this customer that wanted him to choke her or kinda pretend to rape her because she's into that??? and then yoogon when he was choking the girl customer he suddenly imagined that he was choking an image of his younger self?? if you get what i mean he basically freaks out that he's choking his younger self idfk tbh i didnt understand lmao.
then he panics mid sex and leaves the customer and then you see him freaking out in the street because of what happened and then just decides to call the loan shark and says he's gonna work for him.
Myungha- light haired dude, bf of MC’s little brother
Jungwon- MC’s brother
User @Why stated:
“sorry if I misinterpret any of it (I'm relying on google translate for this).
So basically in ch. 66, Myung-ha get's a call from his mother's doctor telling him that the cancer isn't responding well to the treatment, so he offers to put his mother on a clinical drug trial. Obviously that's gonna cost more money, so Myung-ha asks his regular (the girl with a black bob) to give him the money.
The regular says stuff like: "Don't be so pressured, you know how much I like you". But then she just says that they should get married, talking about how she's thinking about her future/age/being lonely, that Myung-ha doesn't have that many customers (so his income isn't that great). Basically saying it would be a win-win situation for the both of them. Jung-Won refuses, the regular says it's because you're dating Jung-Won, and threatens Myung-ha to break up with Jung-Won or she won't give him the treatment money.
Then it cuts to Jung-Won about to go to sleep, but receives a call from the regular, and she tells him she wants him to see something.
Ch. 67:
Jung-Won goes to a hotel, finds Myung-ha and regular there. The regular tells him to sit on a chair next to the bed, asks him "Haven't you always wondered what I do when I go out with Myung-ha?". Jung-Won says no, the regular then says, "Then it doesn't matter what I do, right?".
So the regular tells Myung-ha to strip, after he does that she slaps him across the face, takes his belt and strangles him with it. Jung-Won jumps in to tell her to stop, Myung-ha tells him to stop. After the regular stops strangling him, she makes him give her oral, and before she finishes she pulls his head away and pisses on his face. Jung-Won puts his hands on his mouth, looking like he's going to throw up, and runs out of the room.”