@sweatyman123
Ah i see what u mean. Prejudice trope huh, a lot of manga indeed use this kind of setting. Heck even popular ones like Naruto or SnK is using this stuff too. Unlike isekai trope that overly used by authors nowadays, it's still not much registered as a theme currently.
Well in the end, it depends on the execution i guess. As long as the story deliver it well then i suppose the readers won't complain and in fact, might boast the popularity of the series instead