Lying in the observation tent, Uchiha Ling felt someone inject fluid into his hand.
It was probably some kind of nutrient solution.
Orochimaru really did want to experiment on them, but that did not mean he intended to kill four Genin right off the bat.
Uchiha Ling lay on the mat and began slowly studying the Cursed Seal.
After Sasuke received the Cursed Seal of Heaven, his battles were intense, and his energy consumption was high. No matter how much chakra Orochimaru possessed, he could not possibly keep a Cursed Seal running for years.
The Cursed Seal had a mechanism that allowed it to sustain itself.
Uchiha Ling soon discovered wisps of an energy he had never encountered entering his body through the Cursed Seal.
This strange energy was the source that sustained the Cursed Seal.
It was natural energy.
Strictly speaking, natural energy was the power native to this world.
Chakra was foreign energy, an invasive species brought here by the Ōtsutsuki and the God Tree.
Chakra did not belong here. The ninja of this world were merely its temporary vessels, which was why the God Tree could ultimately reclaim everyone's chakra through Infinite Tsukuyomi for the Ōtsutsuki Clan to consume.
Six Paths chakra stood above ordinary chakra. It was the scavenger among invasive species, the king of them all.
On the surface, it looked as though foreign natural energy was invading Uchiha Ling's body.
In reality, this world's primordial power-natural energy-was invading the alien chakra inside Uchiha Ling.
The cuckoo had stolen the magpie's nest, and now that the magpie had returned, the cuckoo had the nerve to object.
Uchiha Ling stopped resisting the natural energy and allowed it to enter his body slowly.
The problem was that quite a mixed assortment of things wanted to enter him.