
I really liked this. And it isn't wrong. How that pink hair girl is already getting popular again after what she's done? or how everyone doesn't stop the bullying from the class. or how desperate these girls are to be magical girls. Also a sense of justice? I can see some things can relate to society today even though lots of this is fiction lmao.

This is so good but I'm curious about the main priest person and about the labyrinth and why it's a secret to the adventure guild. Also why the monsters don't make the mc level up. Sus...

It was mentioned earlier that he most likely didn't level up since the monsters were supposedly illusions made by magic stone as opposed to real ones. Defeating real monsters is pretty much the only way to lvl up.
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He does eventually start going up in lvls. If I remember correctly, he cries when he gets to lvl 2.

I read the manga version which is available at the site below. It is in Japanese though.
https://rawdevart.com/comic/seija-musou/
You could also check out translation for the light novel.
https://www.novelupdates.com/series/invincible-saint-salaryman-the-path-i-walk-to-survive-in-this-other-world/
the big brother fr scareeeee me but if he's gonna help then ayyyy but damn scared.