reborn in Naruto as me

But Tetsuya's ultimate goal was the Zero Tails—an ancient being, born of pure, untainted chakra. This being existed outside of the Tailed Beasts and was said to be the progenitor of all chakra. Its existence was only a legend.

After years of searching, Tetsuya uncovered the truth. The Zero Tails was a creature of pure energy, a being that could not be touched by time, space, or physicality. By tapping into his own Rinnegan and Tenseigan, Tetsuya summoned the Zero Tails from the depths of space, and with his newfound control over the Tailed Beasts, he absorbed the Zero Tails' power, becoming a being beyond all others.