Don't try and twist what I said. Everyone, everywhere, except for Ars and his people basically, reacting immediately with viceral hate and disgust to the point that they lash out at him even for saving their life, is fantastical. Similarly, the sheer proportion of said virulent racism, is fantastical. There were and still are (unfortunately) plenty of people that are racist to that extreme degree, like that nazi couple who were running a homeschool-type environment to indoctrinate kids to their beliefs, but you don't get entire populations that are like that, like in this manga. It's too homogenous, and why I'm saying it's fantastical.