>>6328878Partially subverted in Concrete Stratosphere Quest; the MC lives in a "post violence and post national culture" era so he sort of had to invent his own. Specifically going with UFC and boxing fundamentals for a more urban and western flare. If your quest has any sort of char gen then you probably can't have very specific fighting styles via region because it might upset the character's design and trajectory too much or limit potential growth at learning new styles. But then again, being some generic fighter who learns moves from multiple cultures could be a good gimmick.
