Etsuji Horii Sensei was born on May 4, 1964, in Osaka, Japan. He holds a rank of a 7 Dan in Aikikai and is a founder of the Aioikai Aikido Dojo in Sanda.
Morihiro Saito (March 31, 1928 – May 13, 2002) was born in the Ibaraki prefecture, Japan. He practiсed Aikido for 56 years and been one of the few 9 Dan-holders in the Aikikai.
Christian Tissier was born on February 7, 1951, in Paris, France. He began aikido at the age of 11 under the Jean-Claude Tavernier in his native city and soon on moved to train under the Mutsuro Nakazono, 7 Dan Aikido Aikikai. In 1968 Christian received a 2nd Dan from Nakazono Sensei and made a plan to go to Japan after.
Hirokazu Kobayashi (February 14, 1929 – August 28, 1998) was an Aikido teacher with a rank of 8 Dan. He created the Kobayashi Aikido style that is still practiced around the world.