Solo leveling wannabe, the rest are hodgepodge of whatever the author thinks are cool. Shallow characters, narrow settings.
MC struggles, wounded and such, but it felt empty, like a terrible attempt on creating immersion, can't decide whether MC should be capable or not. Compared to SL, the setting also felt infinitely more claustrophobic.
"Nail that sticks out gets hammered down" it was such a terrible nail too, so yeah, I don't have to explain how annoying, unnecessary and undeserving Nao is.
Also, status window, level, skill and such are like giving handicap. Mediocre author shouldn't even touch it.