The images on the Sky Screen shifted rapidly. Time flew by, and many years passed in the blink of an eye.
After Indra departed in bitterness and swore his fateful oath of eternal reincarnation, the Shinobi World finally enjoyed a brief period of peace.
The Sage of Six Paths gradually let go of all matters concerning Ninshu and withdrew completely behind the scenes. He no longer personally oversaw its rules or taught his disciples.
All of Ninshu's authority, responsibilities, and future were entrusted entirely to Asura.
Over the years, Asura faithfully followed his father's teachings, uniting everyone, forging bonds, and diligently leading Ninshu.
Under his leadership, harmony prevailed within Ninshu, and everything was peaceful and stable.
Yet the Sage of Six Paths alone grew visibly older.
His body became increasingly stooped, his face etched with the ravages of time. Even his vast, mighty chakra steadily weakened as his remaining years slipped away.
He knew all too well that his end was approaching. He had precious little time left in this world.
Knowing his life was nearing its end, the Sage of Six Paths remained concerned about the Shinobi World's future, as well as the final, crucial task he still had to complete.
He bade farewell to Asura, left Ninshu behind, and traveled alone to a secluded cave, hidden deep in the mountains and cut off from the world.
The Sage of Six Paths slowly stepped into the center of the cave and raised his hands, forming ancient, mysterious hand seals to activate a formation.
As the formation fully activated, intricate, strange patterns flowed across the ground. A halo of light enveloped the entire cave, sealing it off on every side.
He sat at the formation's core, closed his eyes, and began extracting the greatest power buried within him-the Ten-Tails' chakra.