@Knight Moon harems historically exist for two reasons, low population, and people having the resources to actually keep a harem happy. Only reason European and American countries don't support polygamy is cause our historical upbringing of religion in our foundation, which helps set the basics of our morals even if the majority no longer follows the religions that molded those morals.
@Knight Moon Nope if magic exists then the avengers are the reality Or warhammer40k Its not just one guy having magic you know Its like thousands to the point its more like my hero academia than harem simulator