Ok...i understand it now...

So this is just a theory but if you have reading comprehension context clues and real world knowledge you'll get what im talking about so boom. I think ju-yeon was a victim ok this is how so way back then he must've had a crush on some dude who only wanted him for his pretty face and body and basically he used ju-yeon. So, ju-yeon to get revenge kidnapped him and did what he's doing to Kwon to him but worse. I think the guy committed suicide in the end.

Which is why Ju-yeon was so shocked at Kwon saying he'll just off himself and why when he was going overly overly overly overly OVERLY crazy on Kwon that he was saying allat about doing anything for him because he has a pretty face and whatever. Which could add on to the theory that instead of Ju-yeon getting revenge it was because he used his pretty face to his advantage that he was able to fulfill his sadistic urges. Now Kwon is his second victim it's like a reincarnation to Ju-yeon that's why he wants to call him hyung because the 1st was his hyung and why he wants to trap Ju-yeon, control him and prevent him from going because that's exactly what the 1st one did only through death clearly. So...all in all this is victim turned abuser turned even worse abuser. There was no revenge really it was projection of one's trauma onto another because both bottoms wanted him because of his pretty face. Though idk tho this is just a theory (I'm also currently on chapter 30 typing this)