Why do you call him Hatsumi Sensei online? I'm interested so amuse me if you don't mind. What would you call him if you bumped into him over here? Sensei? Soke? Boss ? In fact what did you call him when you bumped into him in Noda that one time? I know that's a bit different as it was in Japan, like I said I'm just curious. I just wouldn't feel right calling him anything but Soke or Sensei regardless of where I was. Same goes for the Japanese Shihan too.