This manga is so god awful, so horrible, that it has reached an art form.
I genuinely say that from the heart -- that the writing abilities of the author are so consistently horrendous, that I could only be at awe at it.
Just...How do you create a frame for this liquid mess of feces? It's like the author is 12 years old, and he wanted to create an underdog that gets superpowers, and any woman with a pair of eyes actively tries to go for his crotch, while thinking nothing about being used as a fuel-tank for mana when the MC absent-mindedly uses them to recharge himself to create more "kewl <<skills>>".
Everyone's role is so rigid and mechanic, without any heart and soul in it, that the MC is not even being a manipulative villain when he goes to them to "recharge himself". It's literally as if everyone were written as a video-game character, and the "player" goes off to any willing female characters to "recharge himself". it's so transparent that whomever wrote this thing was way too busy thinking about how to make the next ability work like, or how to insert more tits, that any other character was shoved to the sidelines as a chess-piece that is expected to function as needed and requires no further thought.
This manga is genuinely such a pile of shit, that it does everything it can to be nothing but mediocre. It cannot even be "so bad it's good".
It's just....Bad. I usually don't even bother writing comments, but, holy shit. Just...Wow. I read a lot of isekai, and most of them are "just about average" for you not to think much about them. But this is so consistently piece of revolting garbage, that it actually made an impression.