
Some of it feels like a poorly disguised fetish and I think I have to link it to the artstyle. If it wanted to go for gore it could have leaned closer to the gore aspect rather than the sexual violence, like you said; but the art style seems made FOR sexual violence (in a way that the artists draws it all. I feel this author has another manhwa that is the exact same way). Even before the actual revenge starts there seems to be gratuitous fetishization of underage girls.
I'm not saying SA shouldn't be portrayed in media what I'm saying is that it's poorly handled here.

That's true, very true.... The female objectification is very strong here, to the point i had to double take and question myself whether I'm not suitable with revenge plot (at the time i couldn't identify exactly what gave me the ick). However I saw a comment about another story with "payback" plot which was Brutal, and i was liking it. And unfortunately this made me realize that due to so many female objectification on stories, I got so desensitized to recognize it

No i don't think so, it was really different in my opinion. Also, the MC was literally a psychopath, he just chose to get rid of the rude (lol if Dexter and Hannibal had a son, that could be him). And it's mostly physical violence which he inflicted, and fear, he toys with them but not sexually but mentally.
There's a lot of sexual violence in here, beware to those who are sensitive to it.
While these bitches do deserve hell for the heinous things they do, it's more cathartic to me when it's paid back in physical violence. When it's returned with another sexual violence tho... Maybe because i feel so strongly about it that in my opinion i wouldn't even wish it on my worst enemies, nobody should ever experience that horror. I get that the main idea was to inflict exactly what they've inflicted to others, to feel the same pain and terror. Still doesn't make it any less hard to read. They're beasts and died as the beasts they are, and we clap and salute the MC for the way she does payback in the same beastly manners, in turn we readers too, are beasts. What that lil bitch said about sophism, staring back at us, judgements are made subjectively rather than objectively. The A and B are either wrong or right, but we're never sure which one is the other.
Interesting.