Many Jiu Jitsu & Koryu teacher/ Masters of old school martial arts where also doctors in various forms of medicine most of which where certified Seikotsu doctors such as Masaaki Hatsumi sensei head of the Bujinkan.
Hichibuku Goshinjutsu Ryu / Amatsu Tatara medicine was originally taught alongside the Ryu ha of the Bujinkan being part of the ancient natural philosophies and teachings of Amatsu Tatara, passed on to Masaaki Hatsumi Sensei by his teacher Toshitsugu Takamatsu.
The school’s ancient principles come from 2,000 year old scrolls called the Tatara, meaning ‘sky harbour’ or literally ‘divine residence and God’s port’ and held by Dr Hatsumi. These principles are a collaboration of martial arts, medicine, philosophy, strategy and religion .Until recently, the knowledge and skills were shared with only a handful of people in each generation and have been passed down over the years in an unbroken chain.
There are five levels of Hichibuku Goshinjutsu : Shoden, Chuden, Okuden, Menkyo and Menkyo Kaiden.
Only four people have been granted Menkyo Kaiden by Soke Masaaki Hatsumi, the highest level in Hichibuku Goshinjutsu (William Doolan, Peter King, Chris Roworth, Dennis Bartram).
Soke Masaaki Hatsumi is the only person who can award Menkyo Kaiden.