Tenzan Heihō is an open-source training methodology developed by Ellis Amdur & Bruce Bookman. It focuses on training with traditional Japanese weaponry: specifically sword and staff. Bookman and Amdur’s aim has been to develop pattern drills (kata) that can be integrated into a variety of different martial systems. This system streamlines the essence of many principles of classical Japanese martial arts, and gives background for a deeper understanding of Japanese sword and staff beneficial to koryū or aikidō trainees alike.