Responses
This makes sense, but it doesnt really explain why Jinsoo hated him so much
Damn this was a month ago so I had to go back and read some chapters.... I didn't remember the whole story now. lol!
Perhaps.... Jinsoo never forgave him for doing that to him after they had a special relationship before. Jinsoo hated Hyunwoo cause I think that if Hyunwoo was honest and explain his situation to him it would have been better. Instead of explaining his situation to Jinsoo he went and got the bullies to "kidnap" him.
When Hyunwoo tells him the story of the stray puppy on chapter 32, he is just explaining why he did everything. Jisoo was his stray puppy.
He was kind of cruel but with "good" intentions? Then end justifies the means even when he lost Jisoo... he "Saved" him.
He wanted to be with Jisoo but he know they wouldn't allow him to do so. So he kind of left him in the same situation where he found him but gave him a gift to "defend" himself.