Revverie
I dont know anything about periods or history, but in the overall visuals Japan belongs to another universe, at least the colorful japanese samurai we're used to, I feel it wouldnt fit Calradia as we know it. At least I personally would feel disrupted seeing Samurais fighting Vlandian Knights
What is general? Japanese? Chinese? Indian? Russian? They're all different cultures, way, way different cultures in a million aspectsBut not general.