Naruto: Uchiha Izuna with system

During the intense battle between Uchiha Izuna and Senju Hashirama, neither combatant realized how close their fight had brought them to the Hyūga clan's territory.

The earth-shaking sounds of their clash reached a branch clan allied with the Hyūga, the Shiranui family. Alarmed, the Shiranui sent a reconnaissance team to investigate. What they found left them terrified.

They quickly reported back to Tenzo Hyūga, the patriarch of the Hyūga clan.

"What!? You're saying this devastation is caused by a battle between Uchiha Izuna and Senju Hashirama!?"

Tenzo's voice carried disbelief as he processed the report.

The leader of the Shiranui family, Shiranui Gengen, nodded solemnly.

"Yes, Lord Tenzo. Our reconnaissance team has confirmed it. Uchiha Izuna and Senju Hashirama summoned giants over a hundred meters tall, constructed from their respective chakra techniques. Their clash has surpassed the limits of what we thought possible for shinobi. It's no exaggeration to say they've transcended the realm of ninja."

Tenzo frowned deeply. The idea of shinobi reaching such godlike power seemed unbelievable, even for legends like Hashirama and Izuna.

"Are you sure?" Hiashi pressed.

Shiranui Gengen nodded once more.

"Our scouts reported that the scale of the battle defies description. Their techniques are not something mere humans can hope to replicate. The devastation they've caused proves that these two wield power beyond our comprehension."

Tenzo finally spoke after a long silence. "Whether or not they've reached such heights, we can't ignore a battle of this magnitude near our territory. Assemble a team to monitor the situation closely."

He turned to Hyūga Reuang, one of the clan's elite jōnin.

"Reuang, lead a team and accompany the Shiranui to observe Izuna and Hashirama. If the battle spreads into our lands, report back immediately. Begin preparations for evacuation, just in case."

"Understood!" Reuang replied with a bow.

Shiranui Gengen raised a hand.

"Lord tenzo, forgive my intrusion, but if we're going to observe them, we must maintain a distance of at least twenty miles. Anything closer would be incredibly dangerous."

Reuang chuckled.

"Twenty miles? Surely you're exaggerating. Is there really a jutsu capable of causing destruction over such a distance?"

Gengen's expression darkened.

"If you doubt my words, Lord Reuang, I invite you to witness it for yourself. Perhaps you'll see why such caution is necessary."

Reuang frowned but did not argue further.

The battle between Izuna and Hashirama raged for over ten hours, stretching from midday into the late evening.

On the ravaged battlefield, Izuna's perfect Susanoo severed the left arm of Hashirama's colossal Wood Golem. Wasting no time, Izuna aimed a devastating ninjutsu directly at Hashirama's position.

"Fire Release: Dragon Flame Singing Technique!"

A massive dragon-shaped fire attack roared toward the Wood Golem.

Hashirama reacted swiftly, clasping his hands together.

"Wood Release: Cutting Technique!"

Hundreds of wooden spikes shot from the Wood Golem's body, piercing through the fire dragon and scattering its flames into embers.

As the fire dispersed, Hashirama's view was obstructed by the smoke. In that brief moment, Izuna emerged from Susanoo's forehead and closed the distance with a sudden burst of speed.

Bang!

Izuna's punch connected with Hashirama's jaw, sending him flying from the Wood Golem's head and crashing into the devastated ground below.

Izuna pursued, his eyes gleaming with determination.

"Flame Release: Kagutsuchi!"

Amaterasu flames poured down like a torrential storm, consuming Hashirama's figure.

"Ughhhh!!!"

Hashirama's agonized screams echoed across the battlefield as the black flames engulfed him.

But something felt off to Izuna.

"Too easy…" he muttered, his Mangekyō Sharingan spinning rapidly.

Sure enough, Hashirama's body crumbled into burnt wood.

"A Wood Clone!"

Izuna spun just in time to block a giant shuriken aimed at his back.

"It's too lifelike, Hashirama," Izuna remarked coldly. "If not for my Sharingan, I might have fallen for it."

From a distance, Hashirama, his face covered in dirt, smiled faintly.

"But you didn't, did you?"

Hashirama clasped his hands together.

"Wood Release: Multiple Strangulation Techniques!"

Vines erupted from the ground, attempting to entangle Izuna.

"Petty tricks!" Izuna sneered, unleashing Amaterasu to incinerate the vines.

The two titans continued their duel, trading blow after devastating blow.

As the night deepened, a red flare shot into the sky from the distance, illuminating the horizon.

Hashirama's expression darkened.

"A retreat signal," he muttered.

Understanding that his forces were pulling back, Hashirama made his decision.

"Wood Release: Tree World Great Wall!"

A massive wooden wall rose from the ground, shielding Hashirama from Izuna's final assault.

Izuna didn't pursue.

"It seems the Senju have chosen to retreat for now," he muttered, his Sharingan returning to its normal black state. Susanoo dissolved into fading light.

Izuna took a deep breath and began his journey back to Uchiha's fortress in Congyun Mountain.

End of the Chapter.

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