Re: Did O'Sensei teach any other martial art?
1. Incorrect. The Yagyu scroll was Yagyu Shingan-ryu. There was nothing for Yagyu to discredit. Different ryu. Also, I've never heard before that Yagyu sensei reviewed the certificate. Muto Masao, headmaster of YSR certified it as genuine Yagyu Shingan-ryu. Also, Ueshiba DID learn some Yagyu Shinkage-ryu and this was recognized by Otsubo shihan of Shinkage-ryu. See my (ahem) b o o k.