During the National Genseiryu Championship in Japan 2004, Peter Lee performed an exhibition together with Tosa Shihan's son, Kiyohiko Tosa sensei and Tuyoshi Hagimoto san. See Peter Lee as a culprit together with Tuyoshi Hagimoto san attacking Kiyohiko Tosa sensei after having provoked him on the "streets". In the exhibition the use of a knife was implemented, and it is not a training knife. We who participated in the exhibition tried inexhaustedly to persuade Kiyohiko Tosa sensei to use a training knife. He insisted, so there was nothing we could do. The knife you see in the exhibition is thus a real sharp knife. One mistake and it could have had a very serious outcome. See the entire exhibition here: http://www.youtube.com/watch?v=-J9cV4T-Dos.