The origin of Jujitsu is lost in the mists of antiquity. Jujitsu may be defined as an art of attack and defense without or occasionally with weapons against an opponent, with or without weapons. Some state that Se Keino Ryu was revolutionized from Takenouchi Ryu. However, Takenouchi Ryu was the core of Jujitsu Ryu, from which all Jujitsu sprang from. The combat techniques from this Ryu can be considered a turning point from which various systems came to be identified. Ryu was founded in 1532 and borrowed substantially from Sumo. Takenouchi devised combat method from various sources that came to be known as "Kogusoku". This method and others were later classified under the common heading of Jujitsu.
Noted: The proper translation for Se Keino Ryu Jujitsu is Kodenkan Danzan Ryu Jujitsu. During the American translation of the Japanes language over the years, the word Kodenkan Danzan Ryu, was lost and the word Se Keino Ryu, was found.
Kodenkan Danzan Ryu, which is the proper name, is also known as Kodokan. The exercise which is now practiced throughout the world under the simple name of Judo should properly be called Kodokan Judo. The Kodokan Judo of today is based on the traditional Jujitsu of old Japan. The techniques of the latter, re-examined, refined, and systematized, became those of the former. Thus, it may be said that the Kodokan Judo has elevated Jujitsu, "art" or "practice," to do, "way," or "principle."
Judo is many things to different people. It is a fun sport, an art, a discipline, a recreational or social activity, a fitness program, a means of self - defense or combat, and a way of life. It is all of these and more. Judo is best known for it's spectacular throwing techniques but also involves considerable grappling on the ground utilizing specialized pins, control holds, arm locks, and Judo choking techniques. Judo emphasizes safety and full physical activity for top conditioning.