As he gazed at the purple Rinnegan in his hand, Zou Hyuga's mind raced with possibilities.
Counting the Sage of Six Paths' pair, this should have been the second pair of Rinnegan to appear in the Shinobi World. It was one of the few treasures that could grant access to the Six Paths level, and an essential component for reviving the Ten-Tails and planting the God Tree.
After receiving his Rinnegan transplants, Nagato had naturally gained all five chakra natures, along with control over attraction, repulsion, and a whole range of Rinnegan dojutsu that bordered on magic.
Now that such a treasure was in his own hands, even if it was not a complete pair, Zou Hyuga felt the heady satisfaction of holding the entire Shinobi World in his palm.
With a mere whim, he could destroy this Rinnegan and greatly delay the Ten-Tails' revival.
It would not be so easy for another pair of Rinnegan to emerge in the Shinobi World. It might take hundreds of years.
Yet when it came to actually destroying such a treasure, Zou Hyuga could not quite bear to do it, and he hesitated.
Setting aside Black Zetsu's betrayal, the Rinnegan was a key to becoming the Ten-Tails Jinchuriki, reaching the Six Paths level, and even attaining Kekkei Mōra. It offered the power to reshape heaven and earth and live indefinitely in the Shinobi World.
Obito had no way of knowing what Zou Hyuga was imagining. All he knew was that the Rinnegan was essential to the Eye of the Moon Plan.
Taking Nagato's Rinnegan meant reclaiming control over the Eye of the Moon Plan. Now, he had to retrieve the Rinnegan that rightfully belonged to him from the man before him.
*This world was a failure. Only Infinite Tsukuyomi could create a world