Kinkaku and Ginkaku had gained that ability by devouring the Nine-Tails' flesh, while Uchiha Yin and Kushina had received it as a system reward.
They could use that power to unleash a burst of Chakra in battle.
If Tailed Beast Chakra was still something native to the Naruto World, the Yellow Emperor's Inner Canon certainly wasn't.
As Uchiha Yin examined the incomplete Yellow Emperor's Inner Canon in his mind, he felt a little strange.
This was the first time the system had given him something that didn't already exist in the Naruto World.
Yellow Emperor's Inner Canon (Incomplete): This text lacks the various methods for increasing strength, but retains its most important sections. It contains bedroom arts and dual-cultivation techniques that can greatly extend the user's lifespan and preserve their youth.
Because there was no such thing as internal energy cultivation in the Naruto World, any internal energy cultivated would automatically convert into Chakra.
A wealth of intimate knowledge instantly appeared in Uchiha Yin's mind, and he mastered the contents of the incomplete Yellow Emperor's Inner Canon.
Uchiha Yin's face lit up with excitement.
I got something good! I hit the jackpot!
Though this copy of the Yellow Emperor's Inner Canon was incomplete, it was still the Yellow Emperor's Inner Canon.
Ascending to heaven in broad daylight after bedding three thousand women might only be a myth, but preserving one's youth was already more than enough.
The Naruto World's cultivation system was different from those of other worlds.
In other worlds, the longer powerful people cultivated, the stronger they became and the longer they lived.
But in the Naruto World, no matter how far someone progressed in their training, they would still die when their time came.
A person might even reach their peak in middle age, only to decline