Shoji Nishio (December 5, 1927 – March 15, 2005) was an 8 Dan Aikikai Shihan. He was one of Morihei Ueshiba’s post-war-era students in the Hombu.
Piotr Masztalerz studies Aikido since 1988. He’s a 6 Dan Aikido Birankai Shidoin based in Poland. For those who don’t know Birankai is an association of Aikido Practitioners and Dojos founded by T. K. Chiba Shihan, forged by rigorous training, tempered by mutual respect, and committed to the relentless pursuit of the art.