To me this just feels like a bunch of different isekais mashed together with Arifureta as its base. It has a similar start to Arifureta with a whole class being summoned and given powers, the MC having one that is looked down upon and underestimated, followed by the MC being stranded in a dungeon somewhere. Except unlike Arifureta where Hajime was betrayed and wound up in the depths of the dungeon, Nakatani (the mc) was hit once by a goblin and left to bleed out before one of the classmates just decided to straight up curb stomp him in front of everyone else, with nobody bothering to stop him at all. And then when the MC fights back with his standard power-stealing power, they suddenly care about him again and think he's betraying them for not wanting to stick around after they nearly murdered him or something, followed by him finding a little girl from an ancient species sealed away in the depths of the dungeon who helps him survive and grow stronger, except her design is somehow even more questionable than Yue's for quite literally no reason.
A lot of the characters are cookie-cutter, the villains are cartoonishly evil, everyone who literally stood back and watched as he was nearly murdered is forgiven and treated like his lifelong friends, and he becomes so powerful that he stops getting screen time or any major plot relevance since he'd essentially just end any problems immediately with how smurfed out he became in the first few chapters. And as others have pointed out, the sexual violence tag is there because of one background scene where one of said cartoonish villains takes over a bandit/goblin base and those goblins are being goblins to some of their female captives for exclusively the background of one panel, exclusively to make the villain even more cartoonish when it exists literally nowhere else in the series. They keep introducing and trying to make something of sorts of new characters, but the world just feels so bland and empty that I can't really care about any of them, and they all just fall into similar categories to the rest anyway, so even if they weren't walking across a sheet of blank cardboard they called their world, there wouldn't really be any reason to get invested in them in any way. Everything about this is just so unnecessary and barely thought out that it does have some sort of value in being mindless entertainment, but it lacks the substance to have anything more.