As someone who had silently monitored the Shinobi World through chakra for a thousand years, hiding even deeper in the shadows than Kaguya, the Sage of Six Paths noticed the anomaly in the Box of Ultimate Bliss the moment it occurred. At the same time, he foresaw the series of troubles its emergence might bring.
But his current state was extremely peculiar.
Neither alive nor dead, his chakra was spread throughout the Shinobi World while his soul remained in the Pure Land. Though he could be said to watch over the world and know all that happened within it, personally taking action was absolutely impossible.
He needed a suitable vessel capable of bearing his power.
And the finest vessels were none other than his two sons.
As his direct blood relatives and the reincarnations of Asura and Indra, each could withstand half of his power being infused into them. So long as their old mother did not emerge, they could basically be called invincible within the Shinobi World.
Over the past thousand years, Asura and Indra had reincarnated again and again. It was not as though the Sage of Six Paths had no intention of using that to continuously project his power, influence the course of the world, and explore the future path of the Shinobi World.
Upon closer examination,
every conflict between Asura and Indra had brought earth-shaking changes to the systems and circumstances of their era.
When the brothers themselves first fought, the Shinobi Sect, which had unified the world at the time, fell apart.
After countless struggles and reforms, the Warring States Period of a hundred clans competing for dominance eventually took shape.
The last time, when they became Senju Hashirama and Uchiha Madara and fought once more, they personally ended the chaotic era of a hundred