Aiki

Internal kiho were defensive kiho that drew upon the lifeforce of the monk to enchance their physical or mental capabilities. The monk bind their chi to the particular element and channeled their energy. While granting great powers the internal kiho also often came with drawbacks, and monks rarely utilized internal kiho unless in the direst circumstances.

Aiki
The meaning of the word was as ephemeral as the art itself, but "united life force" was the closest translation. These passive and defensive kiho depended upon deep meditation and strictly regulated patterns of consciousness.