Lmao same and i hope Yoon and him make up soon
I think the black-haired guy is just jealous because jooyoung gives his attention to doyoon mostly.
For some reason I think the black-haired guy has a crush on jooyoung (￣∇￣")
He does have a crush on Jooyoung, which is why he doesn't like being second best and tried to sabotage them saving Yoon. But it's better to come second best than to be hated, Jooyoung hates him a lot more than he did before now.
He was literally looking for chances to fuck him and do whatever he can to keep him it's more than just a crush
Basically Seo Jaegun is a little bitch
I feel so sad for Jooyoung. He had been living his whole life with guilt, threw away everything (becoming a Nux) for Doyoon. I mean, I don't know if he's still doing this as repentance or just because he genuinely cares about him. But still. I think he deserves to be happy at least, and get freed from whatever he's feeling. (Not to mention that stupid black haired dude trying to make him more miserable) ╥﹏╥