NIN: This word is often the subject of many interpretations. In the context of Ninjukai, the word is best described as balance or harmony in relation to the MIND. Through the Tao, one starts to examine the workings of one's mind and see the conflicts, the perpetual state of insecurity, fear, uncertainty and attachments found there. Techniques can never be in the state of flow that can allow blending with the environment if the mind is in a state of turmoil. Understanding the NIN, one transcends the conflicting mind to a level of higher awareness; through meditation one slowly learns to 'free' the mind.
JU: Again, this word means harmony & balance, but in relation to the BODY. It is about the spiritual flow of the body. A mind filled with conflicts inevitably brings tension to the muscles, which causes slow responses. Understanding JU, we learn to let go of our muscular tensions, to cultivate the balance and harmony in our movements. Our movements then reflect an efficient use of energy.
KAI: This word is about the ENVIRONMENT. It means an assembly of people. It is about the need to relate and harmonise with the people or the environment around us. The NIN and the JU must therefore relate to the KAI. The harmony and balance that one experiences in one's mind and body must now be related to the surroundings