One day the land of the rising sun will get editors who say, "Hey were you going to put your high school bullying experience into your manga as a form of catharsis? Maybe don't do that this time, so when someone reads your series they won't assume it's the same rote interactions they've been reading for the last 5 years? Maybe." One day.
But really even if they deal with it in half a chapter the MC is already far beyond the petty squabbles of people who haven't even levelled up. 2 Chapters ago he decided the death of serial murderers, can we keep this dogshit to a minimum please. Scheming wench addition is bad enough.