Having received Hamura's legacy and studied Toneri's and Black Zetsu's cells, Zou Hyuga soon completed his analysis.
He could not help marveling at how deeply dear old Six Paths loved the brothers Indra and Asura. He was almost certain that, although Indra and Asura had been mortals in life, they had come infinitely close to being Otsutsuki.
Only then could their chakra keep reincarnating for a thousand years under the Sage of Six Paths' control.
That power had nothing to do with Indra's and Asura's training. It came purely from the Sage of Six Paths' legacy.
Although the Sage of Six Paths had distributed chakra to the living beings of the shinobi world, he had left most of it to his two sons, ultimately causing him to age and die like a mortal.
The Otsutsuki could not have children lightly. The birth of offspring meant the death of the Otsutsuki parent.
This was why the Sage of Six Paths, once the Ten-Tails Jinchuriki, had died, and why Hamura had died on the moon. The sole exception was the Progenitor, Kaguya Otsutsuki, who had swallowed the Chakra Fruit.
Zou Hyuga vaguely sensed that absorbing the chakra within Naruto and Sasuke would let him glimpse the realm of Six Paths.
But that would inevitably enrage the Sage of Six Paths. He had no confidence in facing an enemy who had entered that realm, much less the Sage of Six Paths, who had lain dormant for nearly a thousand years.
Even that Otsutsuki had to avoid the Sage of Six Paths. Zou could only steer clear of him for now.
Having escaped the three youngsters pestering him, Minato Namikaze flickered over. The former Hokage seemed to have guessed something and asked, "Zou, are you going after the enemy who attacked the Second?"
Zou