Naruto: I Am Uchiha Sasuke!?

In the dimly lit underground chamber, Sasuke marveled at the sheer power of the [Perfect Bloodline Purification Method].

This technique defied the traditional Uchiha method of evolving the Sharingan, which required severe emotional trauma to stimulate the optic nerve. Instead, it directly purified the bloodline, enhancing the Sharingan naturally.

"So, in the end, the goal of intense emotional stimulation was always to strengthen the eyes. My technique achieves the same result, just through a different path."

Sasuke's eyes gleamed with understanding. The Uchiha bloodline was derived from the Ōtsutsuki clan, but over generations, it had become diluted. Unlike the pure-blooded Ōtsutsuki, who possessed both Sage Eyes and Sage Bodies, the Uchiha inherited only the former, leaving a critical deficiency.

This flaw became apparent upon awakening the Mangekyō Sharingan, which consumed the user's eye power until blindness set in—something unheard of among the Ōtsutsuki.

"If I can fully purify my bloodline, I might be able to reclaim what was lost and edge closer to the Ōtsutsuki's original strength."

Excitement surged through Sasuke. He theorized that revitalizing cellular energy—perhaps akin to Hashirama's cells or Tsunade's Baihao Technique—could accelerate this process.

Shaking off his thoughts for now, he turned his attention to the "Uchiha Ninjutsu Encyclopedia." As he flipped through its pages, a vast collection of Fire Style techniques came into view—Great Fireball Technique, Phoenix Flower Jutsu, Dragon Fire Technique, and more. Beyond these, the scroll also contained Shadow Clone Technique, Summoning Jutsu, and a selection of Water, Earth, and Wind Style ninjutsu.

"This is exactly what I need!"

But a problem arose—his Chakra nature affinity currently only included Fire and Lightning. Using Water or Earth Style required corresponding Chakra natures, something he lacked.

"Wait… if I don't have it, I just need to acquire it!"

Sasuke recalled two secret techniques capable of fusing Chakra from others—Kakuzu's "Earth Grudge Fear" and Hiruko's "Chimera Technique."

"Kakuzu's method is too grotesque… fusing hearts and transforming into a stitched-up monster isn't my style. The Chimera Technique, on the other hand, is much more refined."

He sat cross-legged, closing his eyes to recall every intricate detail of the Chimera Technique.

[You deeply analyze the Chimera Technique and achieve an epiphany.]

[You recognize its flaws and refine it.]

[You have created: Chimera Technique - Refined Version.]

Chimera Technique - Refined Version: Allows the user to extract and integrate Chakra from other individuals or Summoning Beasts without physical fusion, granting access to various Kekkei Genkai, secret techniques, and elemental affinities.

Moments later, Sasuke opened his eyes with satisfaction.

"With this, obtaining multiple Chakra affinities is no longer a problem. Now, it's time to head home."

As the sun dipped below the horizon, casting a crimson glow across the sky, Sasuke emerged from the underground chamber of Naka Shrine.

Jumping between the trees, he glanced at the sky, lost in thought.

"The setting sun… it resembles a massive fireball…"

[You observe the radiance of the sun and gain an epiphany.]

[You comprehend a fraction of the Sun's energy and integrate it into Fire Style Ninjutsu!]

Reacting on instinct, Sasuke swiftly formed hand seals.

"Fire Style: Great Fireball Technique!"

A massive sphere of fire erupted from his mouth, its sheer intensity surpassing anything he had ever created before. The forest ahead ignited instantly, the ground beneath it charring as waves of heat rolled outward.

When the flames finally died down, all that remained was a scorched crater, still smoldering with residual heat.

Sasuke stood there, stunned.

"This… this is something else. The temperature, the force—this is on a completely different level!"

His mind raced. There were forces in this world beyond mere ninjutsu or even natural energy. If he could tap into such power sources, his strength would reach unimaginable heights.

A newfound determination set in. Sasuke pressed forward, moving swiftly through the trees.

Suddenly, his keen senses picked up a disturbance ahead—faint sounds of a battle.

His expression sharpened.

"What's going on?"

Moving silently, he concealed his presence and advanced cautiously.

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(A/N: Don't Forget To Add In Your Collection And Support via Powerstone)