After weighing his options, Obito said in a low voice, "Fine, I'll agree. But we've received word that the Ninja Village Allied Forces are currently making large-scale troop movements. Until we confirm 'B's whereabouts and come up with a plan to surround and eliminate him, you'll have to follow our arrangements!"
For Obito, the Five Great Shinobi Villages weren't the only obstacles in his way. There was also the mysterious 'A'—and even Nagato, who was currently his ally.
He could use Nagato to deal with the Five Great Shinobi Villages and 'A' for now, but once they had gathered all Nine Tailed Beasts and reached the stage of reviving the Ten-Tails, the differences between him and Nagato would erupt in an instant.
There could only be one Ten-Tails Jinchuriki!
And to stand against the Ninja Village Allied Forces and the mysterious group that called itself the Akatsuki Organization—the one led by 'A'—he had no choice but to support Nagato with everything he had. As a result, Nagato's strength was increasingly slipping beyond his control.
Nagato now not only wielded the Rinnegan, hailed as the "Sage's Eyes," but had also used its power to control five Jinchuriki with terrifying amounts of Chakra: the Two-Tails Jinchuriki, Four-Tails Jinchuriki, Five-Tails Jinchuriki, Six-Tails Jinchuriki, and Seven-Tails Jinchuriki.
That enormous amount of Chakra had also strengthened Nagato's control over the Rinnegan.
The most obvious change was that Nagato, who had once been crushed under the strain of the Demonic Statue of the Outer Path and the Rinnegan, reduced to skin and bones, and unable to heal even a leg injury caused by a mere Explosive Tag, had gradually returned to normal and overcome his disability.
Although Nagato had kept this secret all along,
Obito had still learned of it through Zetsu's intelligence network.
Obito was