Yeah. I feel like since he's the protagonist we are supposed to like him but if this story was about Inhun and Nakyum and we see that he's being raped by seungho and threatened + pretending to be inhun taking what nakyum saved to give to inhun? Pitchforks would be put on him. In fact since the very beginning without a doubt. But objectively, Seungho is a very much "this ain't it chief" kind of character. While Inhun is like a "imma have 2 keep some eyes on u." I definitely think the former is worse than the latter. Poor Nakyum needs some help to get out of this deep shit. Apparently from the RAWs Inhun escaped with Nakyum since they couldn't find him either. I think this might be an orchestrated plan that Inhun was talking about with nakyum but thats just speculation.
Yea I feel like we as an audience can unconsciously be bias towards a character we see as a protagonist. I agree, I think Inhun is untrustworthy and is likely to get worst but he's the lesser of the two devils. He might even be someone who could possibly reconcile with Na-kyum but it would take a lot of character development on his half. I feel like that won't happen tho unfortunately.
I mean, I understand that since the teacher is not the main character so he's supposed to be hated more but honestly the only thing that we know of him is that he brushed a leaf off and he's super scummy by pretending to be a lot kinder than he is, selfish, etc. But I really fucking hate Seungho. Way more than I do for the teacher as of right now.