It is a story about the victors side, but also about this kind girl who has been made unaware of how the “monsters” are really like, because that side of them hasn’t been shown to her by the people raising her. Either intentionally to hide their past or because those people themselves have grown up the same way and see nothing wrong with it u.u

See the quotation marks? I’m implying that shit’s a metaphor y’all, holy shit mindsplosion! :Y

And she countinues being oblivious of this stuff cuz no monsters live in Mewnie, much like how your Nethers have very few people from other countries as you’ve said. So that’s my reasoning, yeh :T