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Natural energy (自然エネルギー, Shizen enerugī; English TV "Nature Energy"), is energy that can be collected from the atmosphere and terrain. If one can collect the natural energy from around them and combine and balance it with the spiritual and physical energy that makes up their chakra, they can become sages and enter the Sage Mode, allowing them to use senjutsu. This method can be taught by the inhabitants in one of two legendary locations:
- 妙木山 (Myōbokuzan);
- 龍地洞 (Ryūchidō);
The members of Jūgo's clan possess a special ability called Sage Transformation which causes their bodies to constantly absorb natural energy and allows them to perform a myriad of shape-shifting feats. However, as they are unable to control the flux of power that comes with this, they are prone to randomly going berserk. Orochimaru also figured out how to utilise natural energy thanks to Jūgo's abilities and his discovery of the Ryūchi Cave, but was also unable to use it properly because he did not possess strong enough host bodies to use such power.
There is also an anime-only kinjutsu which draws natural energy into the user, and then releasing it in a devastating attack developed by the Tsuchigumo clan.
- ↑ Naruto chapter 579, pages 13-17