Naruto: Reborn in Konoha, Starting with the Drop of Asura's Chakra

Kekkei Genkai: Sharingan!

Seeing these words on his virtual panel sent a refreshing chill down Yagyu's spine, as exhilarating as gulping down ice-cold soda on a scorching summer day. Goosebumps prickled his skin.

Not even when his system first awakened and granted him Asura's Chakra did he feel this level of elation. Back then, his excitement was tinged with fear, as he couldn't be sure if the chakra had hidden traps left by Hagoromo Otsutsuki.

But now, with clarity about the system's workings, the sight of "Kekkei Genkai: Sharingan" brought him nothing but unbridled joy.

The Naruto world might as well be renamed The Legend of Eye Techniques and Shinobi Wars.

While it's often called a bloodline-centric universe, it's truly dominated by dojutsu (eye techniques). The Sharingan's evolutionary path serves as the best benchmark for shinobi strength:

One Tomoe: Genin level.

Two Tomoe: Chunin level.

Three Tomoe: Jonin level.

Mangekyo Sharingan: Kage level.

Eternal Mangekyo Sharingan: Beyond Kage level.

Rinnegan: Sage of Six Paths level.

Mastery over each stage defines exceptional shinobi within that tier. Icons like Itachi Uchiha and Madara Uchiha epitomize perfection at their respective Sharingan stages, effectively becoming game-breaking entities.

Beyond raw power, the Sharingan and Rinnegan grant diverse and formidable abilities, solidifying their users as juggernauts in battle.

Yagyu had long hoped to obtain Indra's Chakra from Sasuke, which would complement his Asura's Chakra and enable him to ascend to Six Paths-level power.

While this dream remained unrealized, the emergence of the Kekkei Genkai: Sharingan more than compensated for it.

If he could evolve his Sharingan to the Mangekyo level, his Eternal Mangekyo Sharingan would inherently bypass the blindness curse thanks to his Asura-based Sage Body. His chakra regeneration rate would rival or surpass Obito Uchiha's, who relied on Hashirama cells.

Even if fate denied him Indra's Chakra, Yagyu could mimic Madara's method—implant Sasuke's cells and wait a few decades to potentially awaken the Rinnegan.

The thought of it filled him with a giddy impatience to fuse the Sharingan Kekkei Genkai immediately.

His self-control prevailed, and Yagyu decided to finish the day's exams first.

After half an hour, the no-rules combat tests ended. The medic-nin treated the injured students while Iruka tabulated scores. Winners earned full marks, while losers received partial scores based on performance.

Finally, the last test of the day commenced: Survival Exercise.

Similar to the hide-and-seek games from their first year, this test now allowed the use of more advanced techniques like Body Flicker and the Transformation Jutsu. Unlike their first year, Iruka took his search responsibilities seriously but still showed leniency if the students' efforts were commendable.

As expected, Yagyu received full marks.

By the time the survival exercise concluded, the sun had set, and the sky glowed faintly with dusk's remnants.

After parting ways with Ino, Sakura, and Hinata—agreeing to train together the next day—Yagyu made a detour to a shop. His purchase? A pair of contact lenses.

While not widely discussed, contact lenses existed in the Naruto world. Kakashi famously used them to disguise himself during his masked appearance as a cameraman.

Yagyu had always hoped to unlock the Byakugan or Sharingan from Hinata and Sasuke. However, as two of the three great dojutsu, their fame made them immediately recognizable across the ninja world.

If Yagyu publicly displayed either eye technique as a supposed orphan with no clan ties, it would raise countless questions and potentially endanger him. Without Hokage Sarutobi Hiruzen's explicit protection, Danzo Shimura—or even Hiashi Hyuga—would come after him.

To conceal his abilities, Yagyu devised two solutions early on:

Sunglasses: While practical, they could be shattered in battle, revealing his eyes.

Contact Lenses: Safer and more inconspicuous, allowing him to mask his dojutsu while preserving his combat effectiveness.

Ultimately, Yagyu chose contact lenses for their reliability and aesthetic compatibility.

Upon returning home, Yagyu entered the bathroom and stood before the mirror. Summoning his virtual panel, he selected Kekkei Genkai: Sharingan for fusion.

The red orb shot out from his inventory and merged seamlessly into his body.

And then…

Nothing.

Just as when he fused with Asura's Chakra, there were no visible changes to his body.

If anything, the Sharingan fusion felt even less transformative. Asura's Chakra at least gave him an immediate boost in chakra output, akin to turning on a faucet full blast.

This time, his crimson eyes remained devoid of the iconic black tomoe.

Yagyu paused in confusion before realization dawned on him.

The system had not granted him Sasuke's fully evolved Sharingan but instead the Kekkei Genkai of the Uchiha Clan: the genetic potential to awaken and evolve the Sharingan.

Such a feature required activation.

Checking his panel confirmed this:

[Kekkei Genkai: Sharingan]

This revelation was cause for celebration. Since his Sharingan was a clean slate, its eventual evolution into the Mangekyo stage would yield unique abilities tailored to him—different from Sasuke's.

The Horizon

With the endurance granted by his Sage Body and the combat potential of the Sharingan, Yagyu's potential ceiling had skyrocketed to beyond Kage level.

Smiling at his reflection, Yagyu felt an eager anticipation for what lay ahead.

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