I'm confused. So he's kinda returning to his old behavior (not gonna be like that for that...

I'm confused too.

I don't think he's "returning" to his old behavior, he never changed. Sure he cares for Nakyum, but he's still a psycho.

i think it's cause he's confused as well? he clearly has never been in love and is trying to comprehend that? idk ╮(￣▽￣)╭

i think he’s confused at the moment and im guessing it might be a few more chapters of hurting nakyeom (๑•ㅂ•)و✧ then loving him again.

Ik that he's an pycho. I may not have many brain cells but I'm pretty sure everyone can tell that xDDD. It's just he is,, thinking" kinda different about Nakyum. I THINK he does even care a little, a rly tiny small little bit more about Nakyum than in the beginning.

It most likely it feels fishy because of the things the learned sir talked about to Nakyum and stuff. He probably feels irritated how obedient and naive Nakyum is? Idk but my guess is somewhere in that direction. He probably doesn't like how easily obedient he got and how easily he gave up on his life if i could say it like that? Idek if I'm explaining things well but i hope you can somewhat understand where I'm going with it ╮(￣▽￣)╭

I feel like Seungho actually really cares about Nakyum and is maybe even coming to love him. But I don't think Seungho really knows what it's like to love someone or how to love someone. I feel like he's gone through a lot of pain in the past so thats why he doesn't really know how to love and doesn't really even realize that he is in love.
He feels like he is drawn to Nakyum and doesn't know how to make sense of it so (considering his past and how it's most likely warped him) his feelings towards Nakyum is portrayed in a possessive and harsh manner.
BUT as we can see, he really doesn't like it when NK is in pain. So when Seungho sees that there is a sudden change in Nakyum's behaviour and that he may be acting out of pain, it bothers him, hence the repeated asking of why he is acting obedient all of a sudden.
Also when Nakyum blatantly acts like he's just a plaything for Seungho, Seungho most likely feels hurt or angry by it even though he may not realize why.

Oof that was a long one. Anyways that's what I've collected so far, hope it makes sense!

Yeah I do understand xD. My guess was going in that direction too but why is he suddenly switching his mood and goes rough. Well he was already going rough but now he's going different. Is it to bring him back to who he where befor or is he testing him or something like that. Or maybe he just doesn't wanted it to be so isy

He probably hit a soft spot somewhere so it might be that he thinks that nakyum should treat himself better or so? We'll see soon enough

Yeah that could be so too