Koichi Tohei

Koichi Tohei (20 January 1920 – 19 May 2011) was a first one to be promoted to a 10 Dan by the Morihei Ueshiba ever. He taught people like Hiroshi Tada, Seigo Yamaguchi, Mitsugi Saotome, Sadateru Arikawa, Kazuo Chiba, Yoshimitsu Yamada, Steven Seagal and many others.

Mitsunari Kanai

Mitsunari Kanai (April 15, 1939 – March 28, 2004) was one of the last live-in students trained by the O-Sensei. 8 Dan Aikido Aikikai Shihan, Iaido teacher and a founder of the New England Aikikai.