Sage Jutsu

Sage jutsu is a ramification from ninjutsu, practiced by few people and is not well known, this art consists of the use of natural chakra that is obtained by absorbing natural energy, combining it with spiritual and physical energy.

Overview
Generally, earthlings learn sage jutsu with sapient animals that are proficient in this art, like toads from Mount Myōboku, snakes from the Ryūchi Cave, slugs from the Shikkotsu Forest etc.

When natural energy enters in harmony with the spiritual and physical energy, natural chakra is created, thus allowing the person to use sage jutsu but the effect from natural chakra is temporary and only last while natural energy remains inside the body.

If the amount of natural energy the person absorbs is too little, nothing happens but if the amount is too high, the person starts turning into the animal that’s teaching him how to use sage jutsu also, if the amount is absurdly high the person turns into stone and dies.

Those who learn how to use sage jutsu successfully can use something know as Sage Mode, in which they gain access to new abilities, however, while training to use sage jutsu, this state is already reached even if it is incomplete.

Only those with large chakra reserves, preferably high Jōnin levels, can learn sage jutsu because those with standard or small chakra reserves would be overwhelmed by the natural energy, transforming into stone immediately.

Sage Mode
"Main Article: Sage Mode" Sage Mode, also referred as Complete Sage Mode, is reached when a person can equilibrate and sync perfectly the absorbed natural energy with spiritual and physical energy, transforming their chakra into natural chakra.

Pure Sage Mode
"Main Article: Sage Mode" This technique is attainable by any person that knows how to use Sage Mode and has pure chakra running in their systems, the Pure Sage Mode differs from the conventional one by not having any pigmentation regardless of the type of Sage Mode being used.