It's not the MC people are hating on. It's the MC's boyfriend (with normal glasses) who financially exploits the MC (who's pretending to be blind so he can make more money for said boyfriend) in a cold, one-sided relationship. Obviously, not even a serial killer could be more hated than a trashy boyfriend like that
Well, sure.
But personally, if I took this particular one the slightest bit seriously, I wouldn't be able to read it at all. So I guess I'm for now a bit deliberately keeping my distance here and lowkey amusing myself at the distinctly unrealistic priorities of serial killer hate < trashy boyfriend hate prevailing in the comments.. ╮( ̄▽ ̄)╭ (I guess it may be a bit of a defense mechanism? Focusing on cliche yaoi manhwa factors and jokingly talking about it helps underline it's just a manhwa and break the tension a bit, I think... which may not be altogether bad, since this is some pretty heavy material. I believe people do the same by joking about horror movies with friends while watching.) Though tbh, in my case, depending on how this goes, I may have to eventually drop it regardless. But for now, as someone who likes the art and is kind of curious about the story, but doesn't excatly have a high tolerance for horror either, I kind of appreciate the blatantly unrealistic lightheartedness in the comments. Hope that makes a bit of sense? :)

I can NEVER sympathize with a psychopath,the seme is a fucking piece of filthy bloody shit , u know it's plot reminds me of novel I read about two psychopaths who got pleasure from killing while having sex with ppl and then they would keep the dead bodies to have sex again yup they were psychopathic necrophils ...I don't remember the name of novel but it was recommended when I searched up psychological horror genre on Google .
So what I m trying to point out is ppl saying they hate four eye more and I m like WHAT !?? I know he is cheating ppl while pretending to be blind but do u think it's worst than killing ppl like that fucker (seme) is doing and if u think so when well u pretty fucked up too ,I can't hate anybody more than the messed up bastard who kills ppl without reason just for pleasure I can never forgive that scum ,seme is such a degenerate I wish he gets caught and gets behind the bars as soon as possible...
it's intriguing to watch where the plot goes but I'll rather root for uke who is misleading liar than a fucking serial killer