Just wondering if any of you have heard of Enzo Ortega. He taught for Nishiyama in the seventies and used to sleep in the dojo and train literally all the time. I think he was the Shotokan Sparring National Champ in '76. He was an extremely intense, disciplined, and intimidating individual. At the time I believe he was a 5th don. I have yet to see someone who could/would be willing to challenge this sensei on the street ie outside the protection of tournaments, which he continuously got kicked out of for contact. Unfortunately, if he were more diplomatic, probably would have had more followers and Nishiyama would have given him more praise. Even so, Enzo was one of his most prized students (he let him sleep in the dojo for god sake...in exchange for teaching classes of course)
