Sekiguchi-ryu Jujutsu

Classical Japanese martial art developed during the Edo period. A comprehensive combat system combining throws, joint locks, and choking techniques. Many schools (ryu) developed unique technical systems. Formed the foundation for modern judo and is considered an ancestor of martial arts generally. Traditional schools continue to practice today.

An organizational system for Grand Sumo established during the Edo period. Each school (stable) functions as an independent training and development institution with systematic transmission of techniques, wrestler training, and cultural preservation. Over 20 stables operate today, supporting sumo's status as Japan's national sport. This fundamental organizational structure ensures continuity and preservation of sumo culture across generations.

Israeli combat system Krav Maga adapted and established as a unique Japanese martial discipline. Merged with Japanese martial spirit, it is utilized in police training and civilian self-defense programs. It has evolved as a modern martial art emphasizing practical defensive techniques and efficiency within Japanese context.

A uniquely Japanese adaptation of Russian Systema martial art, introduced in the late 1990s. It evolved into a distinctive practical fighting system emphasizing flexibility, breathing technique, and relaxation. Incorporating elements from sumo and judo, it became a combat framework specifically customized for Japanese practitioners, blending Eastern and Western martial philosophies.

A comprehensive system of classical Japanese jujutsu developed by Iwama Shirakawa. Systematized from the late Edo through Meiji periods, it is the direct ancestor of modern aikido. Combining joint locks and throwing techniques in a practical combat system, it also integrates weapon arts. Today, it survives through multiple lineages, each preserving distinct interpretations of the tradition.

A jujutsu school systematized during the Edo period, focusing on throwing techniques. Many Kito-ryu techniques were adopted when Jigoro Kano founded Kodokan judo. Continues as one of Edo-era jujutsu's finest traditions in contemporary koryu practice.