After the amazing 10/10 first chapter it has really devolved into stupid as hell predictable isekai slop. Wouldn't be surprised if soon a "slavery" system is introduced just so they can make the highschoolers into the MC's slave and fill the fetish bingo lol
The art is great, and the idea of a fighting games world is interesting, but the rest of the manga is not really worth following.
It is isekai slop & edgy and all, but so far it's been consistent and respectful with the use of fighting game themes, from the SF combat mechanics, the likeness of japanese FG culture like the coin system, the concept of sparring partner, and even the skimpy outfit the girl uses I believe are homage to FG charas (lots of girls in FG use sexy outfit such as Cammy, Mai, Athena, etc).
There's no thing such as "slavery system" in any FG, so I doubt the story will devolve into that, as slop as it is.