The cleverness is by far my favorite party of this. Not sure if I'd keep reading without that.

It is so messed up when they grade on a curve, not based on your score but where you placed compared to everyone else. This school of hateful crazies may or may not be realistic but I'm sure that stupid grade on a curve competing with everyone else is real

But it takes more than one twisted asshole to cause this much evil in a school.

But that doesn't explain the family, I speculate ancient demon possession with a person grudge against MC or humanity.

I will now list all the insane degenerate characters... wait that will take too long.

I will now list all the reasonable normal people in this story so far (MC aside):
-

I speculate ancient demons possessed them and everyone else around MC either to destroy humanity or a weird fixation on MC emself. Other reasons just don't cover this level of insanity and hate.

Sharion is cool with them stealing their luggage? I guess a proper explanation will have to wait till next chapter.

https://i.postimg.cc/HnFN454p/i.png
Wanting to play matchmaker or plotting world domination? Based on this image, I'd say it was the latter.

investigation concluded? hmmm?

Yep, town filled with people possessed by ancient demons trying to end humanity.

I am unclear how she knew exactly where to place the toy and that he'd step on it even seeing her place it there.

https://i.postimg.cc/m2F36WG5/i.png

Suicide attempt already and it's only chapter 3

Did mom or the family or large portion of the city get possessed by ancient demons bent on human extinction or general "evil"? It's too extreme

Doesn't mean it for sure is "invincible"

I wonder what's the deal with the beheaded players with the shriveled heads. Are all these once real people? All these previous victims?

I wonder what would happen if you put one of their heads reverse through the net. Maybe they will think to try that.

Really straddling the line once again with pervy. Not just talking about the absolutely horrible "idol" shell bikini. But the getting teenagers to take pictures of them in their underwear, Would that really work though, I'd think they'd say no even if they broke school rules, it'd be the teacher or whatever that asked them to do that which would get in trouble. Any rules broken regarding social media posting by the school (the school has rules for that?) would be way dwarfed with the blackmail underwear pics by a teacher (or whatever he is)

But at the same time it's not naked or sex acts or anything, (which seems more likely if someone was going to go that far) so straddling that pervy line as is typical of Japanese.

Also noting the ugly face (I think is meant to be anyway) and bugger eating for extra unearned evil points. I mean "unearned evil points" because they make him seem more evil (or at least that is likely the idea) but aren't evil.

I'd try pounding on that cocoon seeing if I could break through.

Better way to say it would be "50% more" or "150%" But that ten based fraction business seems to be reoccurring thing I've seen in some asian comics. I'm guessing it's a more faithful translation of what is a kind of old speak or something.

Also how are the vines killing/destroying monsters

While the traitor is pretending to be on their side, also actually even fighting against the Blood cult, even token wise. MC can't easily just kill such a individual. The moment MC reveals or attacks em is the moment es becomes a active enemy in the fight.