Daitō-ryū Aiki-jūjutsu
Katsumi Yonezawa founded his own Daitō-ryū organization, the Bokuyōkan in Muroran, Hokkaidō, and was one of the first teachers to bring Daitō-ryū Aiki-jūjutsu to Mexico, the USA and Canada while still a senior teacher at the Kōdōkai.