Natural Energy (SerkCon)

Natural energy (自然エネルギー, Shizen enerugī, English TV: Nature Energy) is an energy that can be drawn into the body, fused with one's physical and spiritual energies to generate a powerful form of. Those capable of producing Senjutsu Chakra are known as.

Origins
Unlike chakra, natural energy did not originate from a fruit, or some mystical spell that occurred every thousand years. Thousands of feet in the ocean, the first amoebae respired, and what it exhaled was natural energy.