>>35763838Japanese society has this concept called menboku. If you're not a pure-blooded japanese, it greatly changes how they look at you.
Kiara & Irys - Very fluent, but their personalities clash heavily with japanese values, which is about keeping in line, not bringing attention to yourself, and to always look humble no matter what.
Mori - Not fluent, and she knows this, and so plays the heavy accented gaijin card. This lets the japanese know that they are still "superior" to her and she's merely a funny gaijin that is so cool because she doesn't pretend to be one of them.
Anya - Very fluent, and actually follows their unspoken rules of menboku.This is why she's respected by the japanese, she keeps in line with their values.