Youngjo will possibly come back, but I doubt he will be able to interact with Garam since he got cut off. Rightfully so, that bastard tried sabotaging Garam and as a result his karma caught up to him. I definitely want to see his reaction to how much Garam has grown. I wouldn't mind if Heejae got jealous though. ( knowing Heejae though, he will go the extra mile if caught with wind of them interacting. Don't want another Kruger situation)
Yeah, I didn't like when he was trying to sabotage Garam, but his character was interesting to me and I wish we would've explored it a bit more before he disappeared, I think he would've tried to change for Garam if his karma didn't catch up to him. They were nice together, but their relationship would've harmed other people like Garam himself and the guy who had a crush on Youngjo
I don't think he would change for Garam especially if he got away with what he did. The deal with Nauen wasnt even for himself but rather for his mentor who got fired. He would've probably kept sabotaging Garam if it meant he could get what he wanted. The only reason he felt guilty or even felt sorry was cause he got caught. He was selfish and didn't want the best for Garam, he never wanted the best interest for him.

Tbh, I kinda miss Gram's ex-situationship from earlier chapters, I want him to come back to start sum drama so that old ass Heejae can see how good he has it with my fine, big booty butt king Garam