Inner Path(内道,Naidō) is a part of the Four Noble Paths, and is considered the basis of the four. Though the use of this technique the user gains an understanding of themselves. This understanding allows the user to see themselves for what they are and enter a divine state of consciousness. While in this state, the users senses drastically increase to the point they are able to hear even a butterfly's wing beat. The user gain's the ability to manipulate their own chakra and do things that would require other jutsu, like the effects of medical ninjutsu. Upon manipulating their chakra flowing through their being, they are able to fortifying their cells to increase healing or increase bone and muscle strength. With this technique active, the user gains immunity to most genjutsu.
While this technique is known to to basis of the four paths and the first to unlock, it is stated as being that hardest one to master. However once mastered, even the users chakra becomes a single part allowing them to achieve the impossible with the human body. It allows the user to directly touch an manipulate their very soul and energy as well as another. With the latter requiring physical contact.
Kekkei Genkai, Ninjutsu, Dojutsu
