The Rebirth of Killer Seven: Shadows of the Uchiha

Ryuji Uchiha's ascent into godhood continued as he sought further means of increasing his power. As the Reincarnation of Indra, he had already mastered the most potent forms of dojutsu, fused multiple legendary abilities into his bloodline, and wielded the mighty Wood Release. However, Ryuji's thirst for power was unquenchable, and he knew that to truly rule the world, he needed to control more than just chakra techniques and bloodlines—he needed to control a beast of unimaginable power.

Through whispers in the wind, he learned of a creature older and more dangerous than the Tailed Beasts. It was a being that had long been lost to the world, a beast without a name, a being known only as Zero Tails.

Zero Tails, unlike the nine tailed beasts, had no master—no true form. It existed in an ethereal, almost intangible state, a swirling mass of pure chakra and darkness. Legends spoke of it as an aberration, the product of an experiment to create a perfect weapon, a weapon with the power to disrupt the very fabric of reality. It was said to be an ancient entity, born long before the era of the Sage of Six Paths, and its power was incomprehensible.

Ryuji was intrigued. If he could control the Zero Tails, he would not only increase his power exponentially but also solidify his dominance over all things.

Ryuji's search led him to a hidden, forbidden cave deep within the mountains, a place sealed away by powerful seals, keeping the Zero Tails contained. The area was laden with traps and layers of protection meant to prevent anyone from finding the beast, but Ryuji's strength and knowledge of sealing techniques made him unstoppable. After breaking through the barriers and entering the hidden chamber, Ryuji found the Zero Tails in its uncontained form: a writhing mass of darkness, a swirling vortex of pure, destructive energy.

With his unrivalled control over chakra and his understanding of forbidden jutsu, Ryuji performed the complex sealing technique required to become the Zero Tails' Jinchuriki. As he absorbed the creature into himself, he felt an intense, overwhelming surge of power. The Zero Tails' chakra flooded his body, twisting and contorting his very being. But Ryuji, with his iron will and overwhelming strength, endured. His body now housed the Zero Tails' power, granting him abilities unlike anything the world had ever seen.

His Sharingan, now deeper and more potent than ever, absorbed the beast's essence, and Ryuji's already formidable chakra capacity expanded beyond comprehension. He could manipulate the Zero Tails' power as though it were his own. The entity's chaotic energy became an extension of his will.