Naruto: Sukuna's Jinchuriki, I am Uchiha

Chapter 119: The Mangekyo That Saves the World

The reason behind Uchiha Kagami's decision to host the Shinobi World Grand Tournament, if one had to sum it up, was both a spur-of-the-moment idea and a long-planned strategy.

Kagami firmly believed that only through real combat could the strong continue to grow.

He cared deeply about Shisui, his clan, and even Minato.

He, too, wished to have loved ones and his own children.

But until everything was brought under control, he would not create weaknesses for himself, deliberately restraining such desires.

At the very least, not until the so-called Ōtsutsuki clan was completely eradicated.

Kagami had already ventured onto a new path and could see the road ahead.

Shisui still possessed only the three-tomoe Sharingan, a state that Kagami personally suppressed.

Although Shisui had not undergone any major trauma, the accumulated Yin chakra was already sufficient for him to awaken the Mangekyo.

Kagami had also studied Uchiha Fugaku's Mangekyo, which confirmed his hypothesis.

…

In the shinobi world, there had only ever been two pairs of Eternal Mangekyo Sharingan: the first belonged to Uchiha Madara, and later Sasuke would possess the second.

They shared one common trait:

Both were reincarnations of Indra's chakra.

Uchiha Itachi's statement that closely related Mangekyo Sharingan could merge into an Eternal Mangekyo was based solely on Madara's experience.

Before Madara, there was no precedent for this. It couldn't be taken as a universal rule.

Was it possible that only a reincarnation of Indra could perfect the evolution by absorbing the Mangekyo from another pair of Sharingan?

Could it be that merely having close blood ties was insufficient for creating an Eternal Mangekyo?

The Mangekyo Sharingan was, at its core, an imperfect evolution.

Which was why Kagami never considered his eyes "Eternal Mangekyo." Instead, he referred to them as "Perfect Mangekyo."

Eternal Mangekyo and the Rinnegan represented the evolutionary path of Indra's reincarnation. Ordinary Uchiha were never meant to attain them.

When Uchiha Obito briefly wielded Six Paths power, Kamui gained the ability to traverse dimensions.

When Kakashi wielded double Kamui, he could even injure Kaguya, a bloodline-net-level foe.

Kamui remained Kamui—a power of immense potential.

This was the outcome Kagami hoped for.

The Mangekyo Sharingan represented the manifestation of the wielder's most fervent desires.

In contrast, the known abilities of the Rinnegan—powerful as they were—lacked this unique, personal reflection.

Could one seriously claim that Sasuke's ultimate wish was simply to swap places with objects?

…

The Rinnegan was the eye of the Ōtsutsuki clan, while the Sharingan originated from the God Tree.

Combining the two allowed Kaguya Ōtsutsuki, who possessed both the Rinnegan and the Sharingan, to perform the Infinite Tsukuyomi, blanketing the entire planet in illusion.

She had succeeded once in the past.

Why, then, did she fail in the end?

The answer lay in her two children.

Whether Hagoromo and Hamura were born of Kaguya or brought into existence by the prayers of others, there was a crucial common thread:

The shinobi world.

Hagoromo and Hamura were, in essence, partially native beings.

No matter the world—be it Kagami's original world, the Jujutsu world, or the shinobi world—there seemed to be a universal rule:

Balance.

Whenever a world faced the threat of complete destruction, it would produce corresponding individuals to prevent that catastrophe.

One might describe this phenomenon as:

The appearance of destined saviors.

From this perspective, Hagoromo and Hamura were born to thwart Kaguya's plans to obliterate the shinobi world.

In the Jujutsu world, the emergence of Gojo Satoru seemed like a counterbalance to Sukuna's destructive potential.

In that world's twisted timeline, Sukuna killed Gojo. But even so, Sukuna met his end as well.

…

In the original timeline, Sasuke and Naruto matured just in time to seal away Kaguya.

After them, another savior figure might have emerged, like Boruto.

Given this backdrop, combined with the "wish-granting" nature of the Mangekyo, Kagami speculated:

The world itself might possess a will.

Not as a conscious entity, but as a self-preserving set of rules.

For example, the Mangekyo Sharingan did not exist during the Warring States Period, which spanned over a thousand years.

Uchiha records explicitly stated that Uchiha Madara was the first to awaken the Mangekyo Sharingan.

Even Indra, the progenitor of the Uchiha, never had a Mangekyo.

It was as if the world foresaw an impending crisis and sought a self-rescue mechanism.

In the past, it chose Hagoromo and Hamura, as well as Gamamaru—the Great Toad Sage.

Now, it might have chosen the Mangekyo.

Neither the Ōtsutsuki nor the God Tree possessed the Mangekyo.

If one considers the eventual outcome, it was clear:

The Kamui Mangekyo played a critical role in sealing Kaguya!

The twin Kamui wielders essentially replaced the historical role once held by Gamamaru.

Obito's dual Kamui saved the saviors from Kaguya's All-Killing Ash Bones.

Kakashi's dual Kamui severely injured Kaguya, creating the opportunity for her sealing.

Such thoughts arose because Kagami himself had calmly awakened the Mangekyo, carefully experiencing that moment.

It felt as though the universe itself had aligned, propelling his thoughts to instant clarity.

It was as if…

Some mysterious force, in line with his own desires, had given him a powerful push.

…

This theory led Kagami to take Shisui's awakening seriously.

In the original timeline, Shisui, torn between his clan and the village, awakened Kotoamatsukami.

Now, free from such conflicts, it was uncertain whether he would still awaken that ability.

A simple Mangekyo Kotoamatsukami was ineffective against Rinnegan-level opponents, as its chakra output was worlds apart.

Kagami aimed to guide Shisui down his own "Perfect Mangekyo" path.

When Shisui awakened, he must not be influenced by emotions like anger or vengeance.

Otherwise, awakening Amaterasu would be a wasted opportunity.

Even Eternal Mangekyo Amaterasu offered limited utility against the Ōtsutsuki.

Kagami preferred Shisui to awaken abilities that enhanced himself or provided support.

Supportive abilities were most valuable when one's combat strength was already sufficient.

Consider Ōtsutsuki Isshiki's ability to shrink objects—a seemingly simple technique that, when paired with taijutsu, became overwhelmingly powerful.

…

As for Sasuke, Kagami wasn't particularly concerned. He already had a clear evolutionary path.

One Eternal Mangekyo and one Rinnegan made for a balanced pair. All Sasuke needed was a physique upgrade.

Ideally, Sasuke's Mangekyo would further enhance his physical capabilities.

To that end, Kagami let the two Uzumaki youngsters regularly spar with Sasuke to push his limits.

In the Uchiha clan, the body often struggled to keep up with rapidly increasing eye power.

Fortunately, there was a solution.

When Naruto and Hinata's child inherited both their robust physiques and their Byakugan…

What would the offspring of an Uchiha and an Uzumaki be like?

The decision to have Sasuke rely on Karin wasn't made by Uchiha Mikoto; it came from Kagami himself.

…

Staring out over an endless chasm, Kagami dissipated his Susanoo.

Turning toward Konoha, he prepared to gather everyone and announce his next steps.

End of Chapter

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