Well I let it cook for a while and I must say its garbage.
First let me say this, if you didnt liked the art -> it wont get better later on. Some are even outright disgusting even the ecchi scenes. Secondly, compared to the same authors other works "Confinement King" this one is way worse and that manga version didnt even arrived to the most fucked up, ugly, annoying and disturbing guro shit then the Light novel already has.
So how is this then ? Well, im glad the harem, romance, revenge and mystery tag got removed because you wont find anything related here in this "story". Obviously since its been written by the same loser, you will see similarities in disturbing shit you saw in the light novel of "Confinement King". Basically saying incel (I hate to say this word but I cant come up with the right words to describe it) vibes but... not satisfying.
You see, despite the story tried to play it safe in the beginning with its theme as not to mislabel itself and deter the public eye, it shots itself in the foot by giving the antagonists (the douches/school bullies) more and more sex scenes to a point you think you read a NTR Dojinshi. Its not done for plot as there is no need to show them they have a GF and have sex multiple times, nor is there a reason to show the Love Interests having being raped, or sold themself to the douches + came inside of her except for humiliation fetish (NTR). I think I dont need to go on a rant WHY this dosent mix well.
What makes this manga worse is the MC himself, but also the whole "revenge" (or the lack of it.) which you dont want in your manga which is all about MC + Revenge....
While its personal preferece if you as the reader will hate what the bullies did to the MC (Netorare), but will love to see when the MC does to them (Netori), here I cant even suggest this manga despite im a fan of Netori.
The reason is as I mentioned, the obvious and disgusting NTR being show chapter after chapter, but the main reason for me personally IS the MC himself.
Not only is he a loser, but a pathethic loser with magic powers and it wont change. And while you might think: "Hey, there is potential for revenge here + harem.", I must sadly disapoint you here. None of the girls are worth reading, nor are they hot or pure. Nor are they special in the douches eyes nor are they their mothers, sisters or chrushes (You know...for a Revenge story this would hit hard). They just date them and thats it. Basicly you could say all the MC can achieve at the end is to "steal" the sloppy seconds of the douches at the very end while they would go with their lifes after that.
The other thing is that MC dont "steal" them, he tortures and forces them to "love" him but it reads annoying. Like I said, im a Netori enjoyer, im all for a MC who gonna steal the girls from the douches no mater if he is a nice guy or a evil guy. But here it reads pathetic. While you might have understood, perhaps even sympathized with him in the 3 chaps, you will dislike him later on or even got annoyed with his character.
Im not sure how popular this is in japan, but my gut feeling tells me this shit will get axed within 30-40 chaps max.