Aikijutsu or jujitsu is an unarmed combat art derived from the movements and techniques of Japanese swordsmanship. Aikijutsu is the circular dimension of the knowledge of sanjuriu. This is said because the subtle yet complex motion in this art is almost entirely circular. This allows a practitioner the free flowing of techniques that are quick, precise and devastating to an oncoming attack. An aikidoka can, even in early stages of training blend with an opponent's movement and energy, controlling their movements all the way down to their breathing while giving almost no opening for counters. In true aiki, one never fights strength and aggression with the same, but rather relies on more refined techniques and methods, such as taisabaki (body movement), kansetsuwaza (joint locks), kuzushiwaza (off balancing methods), nagewaza (throws), osaewaza (controlling techniques), kyusho jutsu (vital point attacks) and of course, aiki (blending of movement and energy) to allow an opponent’s strength to reach its peak before he or she is defeated. Aikijutsu (Jiujutsu) is one of the most Lethal yet peaceful of the martial arts. Strikingly beautiful, it appears almost magical. A well-executed technique will seem almost effortless. And because of the no resistance principle, the technique is effortless to a well-trained Aikidoka.
Aikijutsu survived mainly in secret until the nineteenth century, adding to its legend as a devastating fighting system. It was passed down from General to Soldier for many generations of warfare evolution to control and defeat the new threat of the time, armored soldiers. Punches, kicks and traditional military striking methods needed a supplement to defeat a fully armored soldier. The evolution 4500 plus years of training passed down from generation to generation with the power to create masters of training known as Heiho.