Koyama Dojo is the Honbu Dojo for Hakko Denshin Ryu JuJutsu (HDRJJ) in North America, practicing the traditions of Shodai Soke Lamonica.
With over 25 years of teaching experience, our instructors deliver the traditional Shihan/Deshi style of one-on-one instruction. As active members of the global Hakko Denshin Ryu Federation, our commitment is to uphold and pass on this potent martial art.
We invite you to experience the transformative journey of self-defense and personal growth through HDRJJ at Koyama Dojo.
Although Hakko Denshin Ryu JuJutsu is an ancient martial art, it is also an incredibly effective self-defense system. It teaches students how to use natural movements with very little effort to defeat much larger attackers. Instructors begin with common attacks one might encounter on the street. We then explore the various ways Hakko Denshin Ryu can humanely deal with an aggressor.
Our classes are designed to build confidence and skill very quickly. By transmitting the techniques in the traditional fashion --one on one, teacher to student-- new students progress rapidly. We have a specific curriculum designed to teach beginning, intermediate, and advanced students the fundamentals of Hakko Denshin Ryu JuJutsu.
Hakko Denshin Ryu Jujutsu is descended from ancient Genji Clan Samurai techniques. Although there are sketchy references to martial art techniques dating as far back as 23 B.C., the first generally acknowledged was the Japanese grappling system that was developed by Prince Teijun Fujiwara, 6th son of Japan's 56th Emperor.
