Chapter 165: One Day War
The space where Seireitei stood had no true concept of above or below. When you looked up, you saw only an artificial blue sky and drifting white clouds, a pleasant illusion maintained by chakra and power.
But in essence, this constructed realm had no atmosphere, no natural flow of time, no proper laws of spacetime at all.
So when Aizen began his summoning, the colossal Gedo Statue appeared in mid air as if someone had forced a silhouette into existence.
Naruto and Tsunade barely had time to gasp.
A violent wind swept over them, whipping their clothes like flags, yet no one cared about something as trivial as air. The instant the golem manifested, an instinctive warning screamed inside every mind present.
That thing was an invincible monster, the origin of chakra, and in a sense, chakra itself given shape.
The chakra pulsing within their bodies confirmed it without mercy.
The Outer Path Demon Statue, a presence rarely spoken of even in myth, was anchored by Aizen and dragged from the seal on the moon into Seireitei.
It hung there in silence, enormous and grotesque, its ten tails coiled like a demon's crown. Its body remained motionless, as if fixed by an invisible hand.
Then the sky began to darken.
Hundreds, then thousands, of dense black spheres emerged above it, multiplying until the horizon was swallowed. They stretched into thin, intersecting nails like steel, and those nails slowly drove into the statue's wooden flesh, pinning it as if it were prey.
Inside Naruto's consciousness, Kurama stared into that sudden blackness, voice trembling.
'Those are… Truth Seeking Balls… Why…?'
In Kurama's perception, the heavens had become a pure black ocean.
Truth Seeking Balls were not common tools. They were the core of the Sage of Six Paths' inheritance, a perfected fusion of all elemental natures. Even the Sage himself had never created more than a handful.
And now?
How many floated above the Gedo Statue?
One million. Two million. Tens of millions. Hundreds of millions.
There was no counting them. There was only the sensation of infinity, a curtain of black rolling overhead, waiting for someone to pull it down.
"Surprised?" Aizen's voice carried mild amusement, as if he were discussing an improved ink formula. He turned to Naruto, and it felt as though his gaze pierced straight through flesh and bone to where Kurama curled up in fear. "This is simply the result of systematization. Once you understand the principles and analyze the theory, improvement becomes natural."
He watched the statue pinned in mid air, calm and patient.
"Using such an outdated method for conversion is frustrating," he continued. "But it is unavoidable. Converting interfaces still requires intermediary techniques. I will complete this quickly, please wait."
Polite. Arrogant. Final.
Aizen raised his palm toward the Gedo Statue and gently squeezed.
The black ocean above poured down like ink from a broken sky, cloaking the demonic statue in pure darkness.
The moment the black matter wrapped around it, the monster twitched, its body shuddering as if something within it had awakened.
Then it went still again.
Aizen's voice remained steady.
"Interface open, chakra resonance ready."
The black substance continued to coil and cling, and gradually it formed a spiral structure around the Gedo Statue, like a massive engine assembled out of void. It rose like a tower, a colossal mechanism standing upright in the emptiness.
Konoha's ninjas, who had been eating and drinking inside, sensed the change. One by one they opened their doors, stepping out to stare at the sky in astonishment.
In a world where thought could become power, where will could twist reality, this was what it looked like when someone treated chakra as technology rather than myth.
Once you deciphered chakra's essence, once you reconstructed the mythological era through controlled processes, improving the wasteful practices of the past was not outrageous.
It was inevitable.
An industrial factory could refine its workflow and multiply output by tens of thousands. So what of chakra?
When will and power began to understand the limitations of the old system, then pursued research and refinement with intent, what would the new era look like?
To ordinary people, such leaps were impossible.
To Aizen, it was simply the most natural thing in the world.
"The jinchuriki system is cruel and crude," he said, voice carrying clearly through the air. "The new External Summoning system will replace it entirely."
Naruto's breath caught. Tsunade's eyes narrowed.
Aizen continued as if lecturing a room of students.
"The lives of tailed beasts and humans do not need to be bound together. That technology was created to control the tailed beasts. Due to the limitations of the era and the imperfections of its design, it became the only method available."
His hand traced a small motion in the air, and the black ocean responded like a living sea.
"But I have a better approach. The chakra of the tailed beasts and the Divine Tree share the same origin. The tailed beasts have left deep marks upon this world. They are symbols, wedges embedded into reality itself, bound to the ninja world's structure. They have become part of what defines this world."
He lifted his gaze, and in that moment his expression looked almost gentle.
"The true use of the tailed beasts was never war. Their resonance, the traces of their existence, make them signals to other worlds."
"This is the real symbol of connection. Different worlds can be intertwined through the tailed beasts. That makes contact possible."
"And now that we have confirmed the Otsutsuki are not as terrifying as I once assumed, we should focus on what we can create ourselves."
The vast black ocean surged higher, folding into angular shapes in the sky. It built itself into a massive structure with the Gedo Statue and its ten tails as the core.
Nine branches extended outward, each ending in a cage like socket.
From those sockets, Kurama could smell it.
The scent of siblings. The faint imprint of their chakra. The echo of their existence.
Kurama did not need to think. It already understood what Aizen intended.
Aizen's voice lowered, and the air seemed to tighten.
"Summoning Jutsu, the Nine Tailed Beasts."
Then he called the first name, as casually as reading a roster.
"Ichibi, Shukaku."
The world changed.
It felt like watching a recording and suddenly skipping forward.
In the next instant, Shukaku's mountain sized body was already suspended in mid air.
The tailed beast had been severed from its jinchuriki without warning, ripped free by an immense and immeasurable force of chakra and natural energy. Before it could even snarl properly, it was slammed into a prison made of a massive black structure.
Truth Seeking substance.
Shukaku's face contorted in disbelief, almost human in its shock.
Aizen spoke again, calm as a surgeon.
"Truth Seeking matter transforms, sealing and transmission."
The prison shifted. Black liquid flowed like water within it, swallowing Shukaku's roaring form.
Then, in a blink, countless black spheres pierced through Shukaku's body.
Shukaku's solid form dissolved, unraveled by Truth Seeking matter, reduced into a pale yellow chakra aggregate, a lantern of condensed existence hanging high above the vast Ten Tails engine.
A strange heartbeat like call began to pulse through that chakra, funneling down into the sharp edged structure below.
The engine amplified it.
Faint yellow ripples rolled across the sky.
Across the ninja world, wherever Shukaku had ever existed, wherever its chakra had ever left an imprint, the same faint yellow resonance flickered into being.
And it did not stop at one.
Standing beneath the massive black structure that covered the heavens like a star forged from darkness, Aizen continued to call names, as if doing nothing more than taking attendance.
"Nibi."
"Sanbi."
"Yonbi, Son Goku."
One colossal figure after another was pulled from the world, slammed into the nine sockets of the Ten Tails structure, then shattered and refined into glowing chakra masses suspended above the engine.
Each time, another color lit the sky.
Each time, another resonance wave spread through the ninja world, illuminating places where those beings had lived, fought, and bled.
The Nine Tails was last.
And when Kurama was dragged upward, the surrounding spacetime itself trembled.
Everyone saw it.
A crimson signal swept across the ninja world in an instant, and above Seireitei a vast reflection appeared, as if another ceiling had opened.
Figures looked down from that reflection, dressed in black, hanging upside down in the sky like an inverted world. They stared at the scene below with the same disbelief, as if they had just witnessed an impossible miracle.
The spacetime structure of Seireitei, already unstable, groaned under the strain. Outside, the pale blue moon hung unnaturally close, releasing stronger chakra fluctuations as if it had moved of its own will.
But compared to the Ten Tails, now roaring as the nine chakra masses fed into it, the moon's resistance no longer felt threatening.
Aizen stood atop the summit of his creation and gazed at the moon.
"See?" he said quietly. "Saving this world is not particularly difficult."
Smoke and dust drifted below. The black structure above pulsed like a living lighthouse.
Aizen sighed, a lonely sound that almost felt out of place.
"Yet I still have not found someone who truly understands me. That disappoints me."
His eyes sharpened.
"But it is fine. Training is familiar. Now, everyone will witness the true technique."
Tailed beasts, chakra given will, were treated like components.
Their nine enormous chakra masses rose higher, their signals sweeping across the sky, lighting every trace of their existence.
A colossal torrent began to converge from every direction into the Ten Tails engine.
At the core of the Gedo Statue, its enormous eye slowly began to open, pointing toward the moon.
In theory, the moment that eye fully opened would be the moment the lunar seal broke, and Kaguya would descend again.
But Aizen did not intend to break the seal.
He intended to do the opposite.
He intended to use the signal connection to pull the moon's chakra down.
"Tens of thousands of true words."
As the Ten Tails roared and shifted, transforming upon contact with the chakra of the nine, Aizen made a simple gesture.
This was not ninjutsu.
Not elemental release.
Not even a Senjutsu based technique.
It was a siphon device built from chakra itself.
The moon's vast chakra, the very chakra that should have existed as the progenitor of this world, vanished in an instant.
That incomprehensible power poured into the nine chakra masses, then through the spiral structure of Truth Seeking matter, began to broadcast into deeper space.
Not only the ninja world.
Even distant parallel universes could receive the call.
Under Aizen's consciousness, countless points of light ignited around what should have been isolated worlds, like stars answering a command.
Spaces and timelines connected to the tailed beasts, any trace tied to their existence, were illuminated by a signal so immense it nearly exhausted the chakra of all beings in the ninja world.
The vacuum of the siphon even dragged the moon's light itself backward, feeding it into the Ten Tails engine.
The Gedo Statue roared in agony.
Above it, the nine tailed beast chakra masses blazed brighter, bathing the entire ninja world in their colors.
If you wanted true resonance across worlds, Seireitei alone was never enough.
Aizen's purpose was clear.
The tailed beasts were a beacon. A signal tower. A teleportation anchor.
Using this massive signal source, he would resonate his chakra with the chakra of his original world, locate it, then close the distance through chakra aggregation.
As infinite blue chakra flooded the moon, the structure in mid air rotated faster and faster. It began to distort the space around it.
Scenes from another world flickered into view above Seireitei.
Shadows. Blurs. Then shapes.
They grew closer, clearer, as if the worlds were already pressing their faces against the same glass.
Naruto stared upward, stunned.
In the reflection, he saw someone who looked like him.
And beside that version of himself, a red haired girl stood close.
Aizen's mouth curved.
"The final moment approaches," he said. "Let all chakra resonate. Let the worlds overlap."
His tone was almost delighted, like a child about to open a gift.
"I have never seen what it looks like when two worlds intertwine. Will the world double in size, or will it become a conceptual mirror? I look forward to its birth."
Then, from within the dissolved tailed beast chakra, countless tiny points of light suddenly ignited.
A cold chorus rose, layered voices overlapping as one.
"We have waited for this moment, Aizen Sosuke."
Naruto's skin prickled.
Kurama's mind went cold.
The voices continued, carrying a strange reverence.
"Ichishiki, your sacrifice will not be in vain. Aizen Sosuke, accept the highest honor and praise from the Otsutsuki clan."
There was no explosion.
No violent flash.
Instead, a surge of chakra, dozens of times greater than anyone expected, was poured directly into the Ten Tails structure in an instant.
Aizen's eyes widened slightly.
The descendants of the Otsutsuki, aware of everything in the future, chose the simplest solution.
If Aizen needed chakra to anchor the summoning, then they would give him a hundred times more.
They would offer it at the perfect moment.
No plan was the best plan.
And then, in the next instant, everything vanished.
The Ten Tails structure, the black lighthouse, Aizen Sosuke, the countless mysterious points of light, all of it disappeared without leaving a trace.
Only the people remained.
And the reflections in the sky.
They stared at each other in silence, separated by worlds that were now close enough to touch.
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