Origin of the Term Kempo
Kempo is the Japanese pronunciation of a Chinese term, "chuan fa" ("fist method"), referring to a system of empty-hand striking which, like Chinese philosophy, predates Japanese social structure, and which continued to be developed through the centuries by Chinese monks and commoners as a means of defending themselves against bandits and standing up to the authority of oppressive government.

In Japan, until approximately 1600 A.D., the aristocratic warrior class held an exclusive right to possess weapons and to practice fighting skills. As the Japanese warrior became better equipped, his weapons and armor greatly reduced the effectiveness of weaponless blows. With less need, Japanese weaponless fighting tactics had no cause to champion their continued development, as had been the case in China. The weaponless striking techniques of kempo were imported at this point in history both directly from China, and indirectly from China via Okinawa, because the Japanese counterpart was technically less refined.

The sophisticated striking methods of kempo employ the use of almost any portion of the anatomy to strike vital points of the body of an enemy. The forefist, knuckles, fingers, elbows, arms, knees, legs, feet, and even the head, are considered "weapons" to be constantly "honed".

Origin of the Term Jujutsu
Jujutsu is a term that is generically applied to certain traditional schools of combat, which stress unarmed techniques but also deal with the use of compact weapons. It can therefore be utilized armed or unarmed against armed or unarmed opponents.

Jujutsu is the only warrior art which does not take its name from the weapons it uses, nor from its form, but from its essential principal. Ju is a character meaning "soft" or "supple", "pliable", "adaptable", "yielding" or even "natural" to extrapolate. Jutsu is a character meaning "art", "style"  or "technique". "Flexible" and "efficient" are appropriate modern connotations for ju as jujutsu techniques seek to blend with the adversary's direction of strength, which is then controlled. The mind and the body adapt to the situation and bring it to advantage.

An old analogy for the concept of "ju" is the bamboo, which yields when laden with snow. It is flexible toward the new circumstances, and by yielding, it allows the snow to fall to the ground, preventing itself from breaking, and springing back into place with more force and speed than was employed in its yielding and bending action. Sensitivity to incoming force, and flexibility in reaction to it are principles at the heart of jujutsu. Although the martial tactics of jujutsu are considered indigenously Japanese, ju as a martial concept came to Japan with the philosophy of Chinese warrior monks as far back as 1200 A.D.

Ken ("fist") Po ("method") Ju ("soft") Jutsu ("art")

Jujutsu proper includes methods of applying nerve strikes, throws, joint locks, chokes, and certain hand-held weapons to disable an adversary, as well as methods of holding and tieing an adversary. Jujutsu systems were developed as a secondary method of combat, complementing the techniques of swordsmanship. Since these systems were developed by individuals with military experience, and since they originated from within major weapons systems, they are, practical, efficient, and effective. Kempo Jujutsu is a complete system of strategy and tactic. The essential principle is the rendering of an adversary powerless with the most efficient and decisive means at hand, exposing the practitioner to minimal tactical, legal and ethical hazards.