Sasuke said calmly, "Whatever happens, we have to complete this mission. This is our first step toward understanding the truth of this world, and it will play a major part in deciding where we go from here. We can't give up so easily."
Seeing how determined Naruto and Sasuke were, the Nine-Tails declared with sudden enthusiasm, "Hahaha! You really are worthy of my faith in you. Naruto, I've decided to lend you a hand. And you, boy from the Uchiha Clan-your name is Sasuke, right? Hahaha! You've earned my approval. I believe you'll achieve your dreams. Now bump fists." With that, he switched consciousness with Naruto and returned control of his body to him.
Sasuke asked in confusion, "Bump fists?"
Naruto smiled and held out his fist. Seeing it, Sasuke smiled as well and extended his own fist to meet Naruto's. The instant their fists touched, Sasuke felt an immensely powerful surge of chakra pass into him from Naruto, along with an equally powerful surge of nature energy.
To his astonishment, Sasuke discovered that his strength had more than doubled. He also found that his mind was completely linked with Naruto's. A single thought was enough to communicate, allowing each of them to know what the other intended to do.
As the two marveled at this, the Nine-Tails' voice rang out in their minds. "I only learned this recently. By using the natural chakra I've absorbed, I can link your minds and replenish both your chakra supplies at the same time. And since I learned that so-called cultivation method, all the chakra I absorb is natural chakra. All I need to do is imitate your human senjutsu chakra, and I can provide Sasuke with an endless supply of what he needs. So right now, Sasuke, your senjutsu chakra is practically