Really dislike how the author pushed down on MC seeing himsefl as trash when he is actually surronded by it.
Was a isekaied hero, fought for the people in the isekai, noticed the experimantion on the monsters and stopped them, somehow got a job as a teacher and got shit on for years when just accepting it, like if he was in the wrong.
And continues to live like that, still have the isekai cheat and just takes any insult in a world where he could put down any hostility with a simple duel.
I think he was forced to take the teacher job after not completing the hero journey and for some reason even accept the mistreatment, but is very stupid, he could have clearly gone somewhere else where to have a actual good life.
I hope the author doesn't make the explanation for why he lives like that stupid, it feels like he is fine with getting insulted and mistreated for something he did, but from anything we have seen he is a good guy and the only time he gone against people in the isekai was for saving the monster girls, how could he feel guilty for that?