While I do somewhat agree with your point that this is supposed to be traumatizing and focus more on the psychological aspect of things I feel like this story constantly constantly showing graphic depictions of rape kind of desensitizes the readers and makes them kind of expectant of it and as such it doesn't shock them anymore or make them feel anything really as they've gotten SO used to it.
I feel like if the purpose of this story was purely to make psychological kind of fucked up story it would do more to focus on showing the deterioration of jiwook rather than just GRAPHIC rape rape rape all the time. If you constantly have to show and don't tell it's not as good as a story as you think.
In my personal opinion as well I feel like while it's obviously ok to show rape in any forms of media trying to make it "justified" or "deserved" by making the victim a pos just minimises what a horrible and disgusting person you have to be to commit such an act.
I was confused too at first on why the hell juhyeon is doing all that and why so much rape but now when i see the spoilers i kinda get it. I can’t say the word “deserve” (cause deserve is really a strong word for me and no one deserves to be raped or killed or whatever) but.. i also can’t blame juhyeon for feeling this way. If it was another person jiwook would be killed right now but what juhyeon is doing right now is not just revenge but also a slow suffering method or “slow death” and i can see that juhyeon has all that build anger and sorrow in him. (Even that I couldn’t see that in earlier chapters but now i do) also we are not gonna forget that it’s not just juhyeon who suffered of jiwooks actions but it’s also juhyeons mother. I would go insane too if i was i juhyeons place.
Now to the rape part, i understand your point that it has too much rape and it all feels like its fetishised (and maybe it is since it also yaoi) but maybe that is the point? I may sound crazy now but what if the amount of rape you are seeing now is the same amount juhyeon got raped too when he was young? Also the word that juhyeon is saying to jiwook is also what jiwook used to tell him?( I might be wrong so all novel readers you can correct me if I’m wrong) but i only thinking about the title “reverse” what juhyeon is doing now is what jiwook is used to do to juhyeon.
Also about jiwook we can see that he changed, he is slightly losing weight, he is more pale, even his hair got long. So we actually can see that something is happening not just rape. If it was the old jiwook he would get angry and throw fists but now he is just obeying and actually got stockholm syndrome which is a normal reaction if someone is being locked up in a room that long and being both abused and humiliated

I don’t know about you guys But the fact that you want Jiwook suicidal or you want to kill yourself is.. sounding like author is succeeding with this manhwa to be honest.
why?
Because she actually affected you. It is SUPPOSED to be traumatising and more visualised, you are supposed to feel disgusted , angry, sad or whatever. Believe it or not but That is the point of a good story. If you actually didn’t feel all that then it means its actually bad.
Also it’s not just rapeslop, if you actually open your mind (and read the spoilers cause that what we all got the information from, right?)
you can actually see there is meaning behind it all, even the colours is symbolising something. It’s tagged as psychological for a reason. The revenge itself is psychological, what going on in juhyeons brain is psychological and what jiwook is going through now is psychological so i don’t know how you missed all that. ? And if you don’t, have some patience!! We’re getting there. ( the background story not actual happy ending)
So don’t worry guys.. it’s actually gonna get worse from this from what i heard.