Boom...
With a deafening crash, Naruto's "Big Ball Rasengan," infused with Senjutsu chakra, slammed viciously into the Nine-Tails' face, instantly knocking the massive beast to the ground.
Naruto landed on the ground and began panting lightly.
In the original timeline, Jiraiya had died unexpectedly in Amegakure. Aside from the nonhuman toad sages Fukasaku and Shima, no one could guide Naruto in Senjutsu. He could only figure it out on his own, so his progress had been relatively slow.
Now, however, with Haku personally teaching him, Naruto had made rapid progress in Senjutsu. Moreover, the Rasengan had been developed by the Fourth Hokage in imitation of the Tailed Beast Ball and possessed tremendous power. After taking Naruto's Big Ball Rasengan head-on, even the Nine-Tails was somewhat dazed.
Seeing the Nine-Tails lying on the ground after being struck down by him, Naruto immediately realized this was a good opportunity. He stirred up all the chakra in his body and thrust out a chakra hand, tugging at the Nine-Tails' Tailed Beast chakra as though in a tug-of-war.
According to Motoyui of Kumogakure, so long as a Jinchuriki undergoing the trial pulled the Tailed Beast chakra from within the beast into their own body, they would be able to freely control the Tailed Beast's power in the future.
Whoosh...
Taking advantage of the Nine-Tails' daze, Naruto smoothly pulled the Tailed Beast chakra out of the Nine-Tails' body.
"Hmph!"
The recovered Nine-Tails snorted coldly.
In an instant, the chakra Naruto had pulled from the Nine-Tails was contaminated by the Nine-Tails' crimson will. This corruption, filled with hatred and rage, spread along the chakra hand extending from Naruto's body and reached Naruto himself.
"This...!?"
Naruto was greatly shocked.
Before he could react, he discovered that even the normal chakra in his body had been contaminated by