"I've been thinking… the Uchiha's Susanoo is, in fact, the perfect container. With some modification, it could bear an immense amount of chakra."
"You all who possess the Mangekyō Sharingan understand this well—the structural framework of Susanoo is inherently suited to carrying the various elements we need to load into the great formation."
Indra and Uchiha Madara both stiffened in shock.
At the side, Uchiha Izuna and Uzumaki Mito exchanged a glance and gave helpless little smiles.
Tobirama's ideas were always so unexpected, so startlingly bold, yet once examined carefully, they often carried a strange, undeniable feasibility…
"If it's Susanoo, since it is formed entirely from ocular power, its amplification and release of eye techniques would, naturally, flow far more smoothly," Madara murmured, a spark of excitement in his eyes. "Originally, we would have had to study how to embed our ocular jutsu into the great formation. But if we use Susanoo as the framework, that problem becomes absurdly simple to solve."
Indra also nodded, imagining the Susanoo constructed from the combined power of the entire shinobi world—how magnificent, how vast it would be.
A thousand years ago—
His Complete-Body Susanoo had faced Asura, the Nine Tails, the Sage of Six Paths, and the united chakra of the shinobi sect.
And now, a thousand years later—
The power of the Uchiha would one day gather the strength of the entire shinobi world, standing as hope and future, to confront the most terrifying enemies beyond the stars.
If that day truly came, and Asura and even the Sage of Six Paths joined in…
Would it not mean that the thousand-year struggle between him and Asura would finally reach its conclusion?
Power—was the key to peace and dignity. It was not the abyss that drove people into madness!
He, Indra, had never been wrong…
"I support this plan!" Indra declared in a deep voice.
"Susanoo is by far the best vessel. And as for your suggestion of using Uchiha Kazuki's soul imprint as the foundation—I agree."
"However…"
Indra's lips curved in a cold smile. "Once, I stood alone against the entire shinobi world, including the Sage of Six Paths himself. I only lost by a single move. This time, with the chakra of the whole shinobi world behind me—even the Ōtsutsuki clan, what of them?"
"We won't need Uchiha Kazuki to open the Gate of Death. We won't need the will of the planet or some so-called Ōtsutsuki God to gamble his life. I will strike—and I will claim victory!"
"I have only one demand: I must be given the chance to lead this chakra into battle!"
Indra fixed his gaze on Tobirama, speaking each word with deliberate weight. "Do you agree?"
Tobirama nodded as if it were the most natural thing in the world. "Of course. If you want to take the vanguard and gather intelligence for Kazuki, I'd be more than glad to see it happen."
"As for your claim that you will win—I sincerely hope to see that too. After all, no one wants to see Kazuki take reckless risks more than I do, whether it be opening the Gate of Death or touching upon those two forbidden powers…"
Indra gave Tobirama a surprised look.
Strange. A descendant of Asura—one who had once opposed the Uchiha clan so fiercely—how could he hold such deep feelings for Uchiha Kazuki?
In that moment, a thought flickered through Indra's mind—he wanted to meet Kazuki.
To see for himself what was so unique about this descendant, that he could nearly unite the entire shinobi world, accomplishing alone what had once required both him and Asura together…
"Then let's begin!"
Madara raised his hand. "We need to complete our great formation—no, our special Susanoo—as quickly as possible. The enemy could descend at any moment!"
"All right, let's tackle the first obstacle."
With that, Tobirama unrolled the scroll, beginning his discussion with Indra, Madara, Izuna, and Mito. On the sidelines, Orochimaru and Hiruko listened intently like students at their master's lecture…
A Susanoo formed from the combined power of the entire shinobi world—its development had begun!
...
"An excellent strategy… Judging from the structure of this Susanoo, if my soul imprint is used as the foundation, then it's entirely feasible."
Kazuki's consciousness, residing within Senju Tobirama, silently examined the research plan laid out before him.
Tobirama's reasoning was truly top-tier.
How could one possibly contain the chakra of the entire shinobi world and merge it into one whole? Ordinary sealing techniques—even the advanced Four Symbols Seal or the Eight Trigrams Sealing—would never achieve such a thing.
Sealing arts were a profound system of jutsu. They were not some crude matter of brute force solving everything.
It wasn't as simple as saying: Since a single Four Symbols Seal can't contain that much chakra, just string together hundreds or thousands of seals to make one massive seal.
Things weren't that simple.
Even if such a thing somehow worked, the result would be no more than a flimsy paper box patched together with tape and scraps. It might look whole, but the moment it was tugged by external force, it would tear apart—superficial and completely useless in real combat.
Against pursuers of the Ōtsutsuki Clan's caliber, such a creation wouldn't even make it onto the battlefield.
Yet Tobirama thought of Susanoo…
Just like Sasuke in the original timeline, who, with the power of the Six Paths, sealed nearly the chakra of nine Tailed Beasts inside his Complete Body Susanoo.
It had to be said—when Senju Tobirama turned to research ninjutsu, he was nothing if not fair.
Whether it was Uchiha, Senju, or any village's techniques—so long as they served their purpose, he considered them worthy.
Even with the ocular powers of Uchiha Izuna, Uchiha Madara, Tobirama himself, Shisui, or Yashiro—all of whom could manifest Susanoo—such constructs might still fail to withstand the shinobi world's chakra, should it rage like an opened Gate of Death.
After all, this was chakra that encompassed not only Eternal Mangekyō wielders, but also Senju Hashirama, even Hamura and Hagoromo—erupting in a short span to levels dozens or even hundreds of times beyond normal.
Such a scale was far beyond even the Ten Tails. This was the true gathering of all life force in the shinobi world, a final all-out gamble!
And yet Tobirama had found a clever solution…
The Susanoo formed by everyone together couldn't contain it. But Kazuki could!
With his soul imprint upon Tobirama, once it was discovered that chakra could flow in both directions between them, Tobirama conceived the perfect design.
So long as his Susanoo served as the core, then when the Shinobi World Susanoo reached the limits of what it could bear under that explosive surge of chakra, the excess could simply be transferred to Kazuki.
Kazuki would definitely be able to take it in!
Not only that—it meant that the chakra linking all living beings of the shinobi world would remain firmly within the control of just Tobirama and Kazuki.
This prevented unstable figures like Uchiha Madara or Indra from seizing that power and creating chaos at the critical moment.
Truly, his foresight was thorough.
"I'm starting to suspect you've read the original story, Tobirama…"
Kazuki chuckled inwardly. Tobirama's wariness reminded him of Sasuke in the original timeline—defeating Kaguya only to turn hostile in the very next moment.
Perhaps this was simply the Second Hokage's sharpened instincts when it came to the Uchiha…
"As for the firewall against Gaia's consciousness, it seems I won't need to construct one myself. Once the living beings of the shinobi world unite, each of them will naturally help filter it for me…"
Kazuki arched his brow with quiet satisfaction.
At first, he had harbored a faint worry. Could someone with Tobirama's rather slight frame truly withstand the terrifying impact of a planetary consciousness?
If Tobirama were to end up a vegetable from that shock, even Kazuki would feel somewhat unsettled about it…
Still, Tobirama was a grown man. He would find his own way to handle it.
"There are still some structural issues that need adjustment. The ocular powers must be linked in this way to stay firm, and the soul imprint should serve as the foundation like this…"
Kazuki studied Tobirama's approach with focus. While excellent overall, it was inevitable that someone who had never surpassed the Six Paths level would overlook certain details when attempting to design a colossal forbidden technique on the scale of an entire planet.
But that was fine.
Kazuki would help smooth Tobirama's reasoning, carefully repairing those imperfect points.
With a thought, Kazuki left behind flashes of inspiration within Tobirama's mind, waiting for him to grasp them on his own in due time.
"The preparations to resist Gaia's consciousness are nearly complete… The true activation, however, will only come once the entire shinobi world acknowledges me."
Kazuki calculated inwardly: That means they'll need to see me open the Gate of Death—burning myself away to face the enemy head-on.
"As for the Ōtsutsuki God… Kaguya's progress is coming along decently."
Ever since the soul imprint had been carved upon her, Kaguya—seemingly linked to Kazuki in both awareness and power—had been sneaking into his ninjutsu arsenal, secretly trying to master the Baryon Mode.
She wanted to surprise him!
Using her own body as the ultimate trap, she intended to strangle the wedge of the Ōtsutsuki God's remnant body and let Kazuki absorb the pure power within.
"Kaguya is trying… but she's still not as sharp as Tobirama," Kazuki sighed. When he checked her beginner's grasp of the art, it left him nearly at a loss for words.
"She'll need some guidance too, something that helps her grasp the Baryon Mode quickly… Even if, by calculation, it should take Ryōshiki more than a year to reach it…"
A glint flashed in Kazuki's eyes. But who knows if that's truly fixed? Being prepared ahead of time is always better…
Within his consciousness, he left behind his interpretations and insights of the Baryon Mode, waiting for Kaguya to study them herself.
And at this point—
Kazuki's gaze swept across the shinobi world. His arrangements were almost complete.
What remained were only the shinobi outside of Konohagakure—those of Iwagakure, Kumogakure, Sunagakure, Amegakure, and others—awaiting Tobirama to go and explain the plan to their leaders.
Asura and Indra had already been secured…
The only remaining powerful individuals to win over were Hamura, Hagoromo, and the sages of the Three Great Sage Regions.
But as for them, Kazuki had no doubt Tobirama would be able to persuade them.
Or rather, no explanations were needed.
Once Myōshiki appeared, Kazuki would do just as Tobirama had envisioned—observing from the sidelines, much like when Isshiki had fought against everyone, watching the Ōtsutsuki Clan Leader's support for Myōshiki, gathering intelligence on their strength.
He could even briefly take over Tobirama's body, switch accounts, and spar directly with Myōshiki to feel it firsthand…
If he won, all the better. Then the one to face would be the Ōtsutsuki Clan Leader, Ryōshiki—though the chances of such a victory were slim.
If he could not defeat him, then when Kazuki entered the battlefield, he would surely inherit the united strength of the shinobi world, seize the chakra gathered by all shinobi, and personally settle matters with Myōshiki.
Within all this, Kazuki—who possessed a one-time chance to open the Gate of Death without injury—would make full use of Might Duy's gift of youth, drawing the shinobi world's recognition to its peak!
As for the arrival of the Ōtsutsuki Clan Leader Ryōshiki, his presence as the most powerful external threat would naturally drive the shinobi world—all of them, including the brothers of the Sage of Six Paths, the Three Great Sage Regions, and the shinobi from the other villages—to willingly burn themselves out and entrust all of their chakra to him…
If they wished to survive, they would have no choice.
In truth, it was not really a matter of no choice. With Kazuki burning himself to protect the shinobi world, what reason would there be not to choose him?
He was the best choice—he was the chosen one, and the only one!
This was the key to unlocking Gaia's consciousness, the moment that would make the shinobi world willingly become Kazuki's firewall.
The script had already been written.
Kazuki's only worry was that Myōshiki, as the Deputy Clan Leader of the Ōtsutsuki, might prove a bit too fragile—that he might not even last more than a few moves, leaving Kazuki without the chance to use that momentum to open the Gate of Death at just the right moment…
"That should just about cover it…"
Kazuki reviewed the plan and found no flaws. The rest was beyond calculation…
After all, when it came to Ryōshiki's and Myōshiki's true combat power, even the main family of the Ōtsutsuki—beings like Isshiki—did not know much.
And against such formidable foes, countless unforeseen moves might arise in the midst of battle.
After all, Kazuki was wagering the resources of an entire planet—the shinobi world—against the immense foundation the Ōtsutsuki Clan had built over tens of thousands of years.
It was a gamble by nature. There was no such thing as a risk-free plan with every variable accounted for. When the battle came, what truly mattered was to stay calm and meticulous in thought, and to keep a heart that could defy the odds, to overcome the strong through unyielding resolve!
"Time to deal with Isshiki and the others—and Obito as well."
Kazuki's figure slowly slipped into the otherworldly space, senses spread wide as he searched for the hiding Isshiki, Urashiki, and Momoshiki.
Those Ōtsutsuki no longer had any use.
Their sole remaining value was to keep their original Ōtsutsuki style intact, letting their desperate will to survive lure Myōshiki into the open…
So far, they had done well.
Whether Myōshiki or Ryōshiki, both had already been bound to Kazuki, set as his targets. Which meant these Ōtsutsuki had become nothing more than waste, now in need of harmless disposal.
After all, leaving them alive risked exposing more of Kazuki's secrets. And as Ōtsutsuki themselves, they were, in essence, a form of supply.
Just as Momoshiki had devoured Kinshiki…
If Kazuki did not consume their strength in advance—
So when Myōshiki and Ryōshiki finally descended, faced with the temptation of the Ōtsutsuki God, Kazuki was certain that the two Ōtsutsuki fighting him would care nothing for so-called clan rules—
"Ōtsutsuki must not kill one another."
Clan rules? They were just decrees made by the Clan Leader and his deputy. They might still restrain the lower-ranked Ōtsutsuki, but for those two it was as laughable as telling Hiruzen and Shimura Danzō to obey village regulations.
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