Actually KMM, Oarai & Chi-Ha-Tan Are Japanese Origin Schools And KMM has a Nazi Theme But Saunders, Anzio, St. Gloriana & Pravda & others were Founded by Other Countries Like the USA USSR GBR & Italy respectively.
So There are Japanese Students that have given names by their parents then they use Soul names based on the School they go to Except for KMM, Oarai & Chi-Ha-Tan.