Okay, throw normalcy out the window for a second, step into this story's world and hear me out:
I find Jang to be on the greener side of things when it comes to the psycho top spectrum, period.
Why? Simple, cause Jang doesn't lie about his preferences and is a freak out in the open. That's the disclaimer he started out with and he has stayed true to it. Yeah sure hes into rough, raw, kinky sex and excessively obsesses over Suwon BUT he has never actually beat Suwon blue and black...or broken his limbs or anything like that. He's not violent towards the one guy he likes getting intimate with and in fact treats him like a decent human, let's be real. And him saying things like "I'll cut your tongue off" are empty threats or just his rash manner of speech, really. And that one factor of not applying violence unnecessarily has made him a more tasteful character than what I expected at the start. And this chapter too, his visible blush after watching Suwon orgasm was a nice touch imo. Can't wait to see more of this guy tbh, he's kinda entertaining.