An in-depth exploration of the karate history of Yabu Kentsū necessitates working with Japanese primary sources and analyzing them in great detail. Only in this way can discrepancies be uncovered and corrected, even if they pertain to seemingly minor details. Otherwise, there is a risk that errors will be perpetuated or false information will be regarded as truth, which can significantly undermine historical accuracy.
Karate Kenkyū Shitsu 