The Perfect Susanoo could be considered the ultimate power of the Uchiha Clan.
The conditions required to awaken this ability were extraordinarily demanding. Only those who had pushed the power of their Mangekyō Sharingan to its absolute limit while possessing immense chakra reserves could hope to unlock the Perfect Susanoo.
Very few people were capable of developing their Mangekyō's ocular power to such a level. In most cases, excessive use of the Mangekyō Sharingan would eventually lead to blindness. As a result, nearly everyone who awakened the Perfect Susanoo possessed the Eternal Mangekyō Sharingan.
However, the Eternal Mangekyō Sharingan was not an absolute requirement.
In history, Indra Ōtsutsuki, Uchiha Madara, Uchiha Sasuke, and Kakashi Hatake had all wielded this power.
Indra did not possess the Eternal Mangekyō Sharingan, but he had already pushed his ocular abilities to their limits.
Kakashi Hatake did not possess it either. However, Uchiha Obito had long since reached the limits of his ocular power through the First Hokage's cells. Having once become the Ten-Tails Jinchūriki, Obito was able to temporarily grant Kakashi enough power to achieve the same feat.
Hayashi also lacked the Eternal Mangekyō Sharingan.
However, he possessed the First Hokage's cells and an immensely strengthened Yin Release, constantly enhanced by the System. Even without evolving his eyes into the Eternal Mangekyō Sharingan, he could still push his ocular power to its absolute limit.
Most importantly, he now possessed the chakra of all Nine Tailed Beasts.
During the battle at the Valley of the End, Uchiha Sasuke used the Perfect Susanoo as a vessel to forcibly absorb the chakra of the Nine Tailed Beasts, breaking through its original limits and reaching an entirely new level of power.
The enhancement granted by Tailed Beast chakra was undeniable.
For Hayashi, the principle was the same.
He could not yet reach Sasuke's level, but unlocking the Perfect Susanoo was still effortless.
Thus, after Uchiha Madara's death, another Perfect Susanoo had been born into the ninja world.
Compared to Madara's, Hayashi's Perfect Susanoo stood half a body taller.
That difference came entirely from the blessing of the Nine Tailed Beasts' chakra.
After cleaving the giant dragon apart with a single strike, Hayashi swung his arm again.
Under his control, the Susanoo swept its spiral sword horizontally.
A massive arc of chakra sword energy burst forth, spreading across the sky and earth with overwhelming force.
The attack tore through the ancient city as though slicing through tofu before rushing directly toward Otsutsuki Sōmoku.
Within Tenseigan Chakra Mode, Sōmoku raised both hands.
An immense repulsive force erupted, diverting the incoming blade to one side.
The chakra released by the spiral sword split the entire city in half and continued soaring through the clouds before finally dissipating.
Sōmoku gasped heavily.
It was obvious that this method placed an enormous burden on him.
The attack did not stop there.
The next moment, a giant Wood Release hand instantly seized Sōmoku.
The enormous hand slammed him downward while crushing the chakra barrier he had barely managed to create.
Sōmoku crashed into the ground.
At the same time, the blue and red giant above him violently stomped downward.
A massive shadow descended over his head.
If that attack landed directly, even a true Tenseigan's regenerative abilities might not be enough to save him, let alone the temporary power he currently possessed.
Sōmoku hurriedly activated his dōjutsu.
Using gravitational force, he propelled himself dozens of meters away.
The Susanoo's foot crashed into the earth.
The resulting explosion blasted ten meters deep into the ground.
Sōmoku steadied himself in the distance and slowly raised one arm to shoulder height.
Blood trickled from the corner of his mouth.
The final trace of light faded from his eyes.
There was no doubt he was preparing his strongest attack.
Hayashi also ceased his offensive and began frantically absorbing the surrounding natural energy.
As Sage Chakra poured into the Susanoo, its original blue and red coloration gradually darkened until it became entirely black.
Then, a crimson aura emerged across its chest once more.
It was the power of the Tailed Beasts.
However, the Nine Tails accounted for the overwhelming majority of it.
Hayashi still possessed large reserves of chakra from the other Tailed Beasts. For beasts such as Shukaku and Isobu, he had previously split portions of their chakra and stored them away.
But those reserves were finite.
The Nine Tails, on the other hand, resided within Uzumaki Kushina and could continuously replenish its chakra.
Furthermore, whether in quality or quantity, the Nine Tails' chakra vastly surpassed that of the others.
As Hayashi gathered more chakra, the dark clouds behind the Susanoo grew heavier and lower.
Purple lightning as thick as tree trunks surged wildly through the sky, continuously flowing into the spiral sword.
Otsutsuki Sōmoku, now completely blind, simply closed his eyes.
Yet the aura around him continued rising.
He suddenly pressed his palms together.
Golden ripples exploded outward, accompanied by a deafening roar.
Blood poured from all seven of his orifices as he spoke each word with tremendous effort.
"Golden Wheel Reincarnation Explosion!"
A colossal golden slash erupted into existence.
It stretched for several kilometers beyond the ancient city, and directly beneath its path stood Hayashi's gigantic Susanoo.
This attack was undoubtedly weaker than Toneri's.
Toneri had possessed enough power to split the entire moon in half.
Sōmoku's attack could, at most, sever a quarter of it.
Even so, its power remained terrifying.
The earth instantly shattered into countless crisscrossing ravines.
Millions of razor-sharp streams of chakra rampaged through the air.
In the distance, the spiral sword greedily absorbed Tailed Beast chakra and Sage Chakra from Hayashi.
The next moment, the Susanoo swung its arm.
A magnificent circular shockwave burst outward as the black spiral sword radiated dazzling light.
The instant that light left the blade, it expanded over a hundred meters, carrying an overwhelming aura.
Sage Art: Yin Release, Tailed Beast Spiral Blade!
Otsutsuki Sōmoku's strongest attack collided with Hayashi's ultimate sword strike.
Within the ancient city, the thousand-year-old shrine, the tallest structure in the area, collapsed instantly.
Its roof shattered under the immense pressure before the entire building flattened into rubble.
The clock tower, second only to the shrine in height, suffered the same fate.
Then every building throughout the city collapsed simultaneously, as though an invisible blade had sliced across the entire landscape.
The enormous city resembled tofu beneath a knife.
An instant later, the two techniques collided.
A thunderous explosion erupted between heaven and earth.
...
Deep within the moon, inside a sealed chamber, stood a woman dressed in magnificent robes.
Even with her eyes closed, she could clearly sense the battle raging above.
She could feel a force tearing through the moon's surface and spreading toward its depths.
The Chibaku Tensei seal was incredibly powerful, but if the moon's interior were destroyed, she could break free and reclaim her freedom.
Ōtsutsuki Kaguya had been waiting for Hayashi to rescue her.
She had never expected such an opportunity to arrive so suddenly.
"Hurry... just a little more... hurry..."
She suppressed the excitement rising within her.
But suddenly, she turned her head.
Anger, surprise, and panic intertwined in her expression.
The force she had sensed had disappeared.
No, it had not vanished.
It had simply been redirected by someone else.
Ōtsutsuki Kaguya abruptly opened her eyes and stared into the distance.
There was no one there.
Yet she knew that a lone figure with frost-white hair had appeared for a brief moment.
For reasons she could not understand, tears welled up in her eyes.
"If you dare to appear, why won't you come see me, Hagoromo?"
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