Naruto: Uchiha Izuna with system

All the ninja representatives who were initially preparing to flee stopped in their tracks as an overwhelming surge of chakra erupted from Hyuga Tenzō.

The chakra spiraled upward, forming a massive column that pierced the clouds, radiating an aura of unparalleled might, as if a god had descended upon the battlefield.

"How… how is this possible!?"

"What… what kind of chakra is this? Is that truly Hyuga Tenzō?"

"There's no way someone of his age could achieve such power! This level… it's beyond comprehension!"

The ninja representatives, all seasoned warriors of at least jōnin rank, were left speechless, their minds unable to process the sheer magnitude of the energy they were sensing.

"Hashirama-sama, what should we do?" one of the Senju jōnin whispered anxiously, his voice trembling.

"Evacuate immediately!" Hashirama ordered, his voice firm despite the unease in his expression. "Take all your clansmen and retreat to the battlefield at Congyun Mountain. Do not look back!"

Even Hashirama, the man known as the "God of Shinobi," could feel the gravity of the situation. He realized now why Tenzō had spoken so boldly earlier—this surge of power was the source of his confidence.

Izuna, too, narrowed his eyes as he observed the scene, his usual composure giving way to a rare display of tension.

"This isn't the Hyuga Tenzō I know from the Warring States Period," Izuna thought. "This must be a result of something I changed… but what could it be?"

In the distance, Inuzuka Retsu, the Inuzuka clan leader who had already retreated to a nearby hill, stared at the spectacle with wide eyes.

"Is this… truly the power of Hyuga Tenzō?" he muttered in disbelief.

Aburame Jūzō, the Aburame clan leader standing beside him, nodded grimly. "If this is his true strength, then perhaps he really can stand against the Two Heroes of the Warring States."

"Stop speculating and move!" Retsu barked. "If we don't leave now, we might not get another chance!"

The two clan leaders immediately ordered their clans to retreat further, unwilling to risk being caught in the aftermath of the impending battle.

Meanwhile, back at the ruined banquet hall, Hyuga Tenzō stood on the steps, his eyes closed, the source of the overwhelming chakra emanating from him.

When he opened his eyes, the change was unmistakable.

The Byakugan, traditionally colorless and featureless, now glowed with an ethereal sky-blue hue, with intricate white patterns resembling a kaleidoscope etched in the irises.

"Those eyes…" Hashirama gasped.

Izuna's voice broke the stunned silence. "Tenseigan!"

"Ten… sei… gan?" Hashirama repeated, turning to look at Izuna, confusion etched on his face.

"Oh? You recognize the Tenseigan?" Tenzō said, a faint smirk playing on his lips.

Izuna narrowed his eyes. "The better question is how you obtained it."

The Tenseigan, the final evolution of the Byakugan, was said to rival the Rinnegan in power. It required a direct descendant of Hamura Ōtsutsuki to merge their chakra with that of a pure-blooded Byakugan wielder.

"That's not something that can just appear on a whim," Izuna thought, his mind racing. "Did Tenzō somehow gain access to Hamura's lineage? Or… did he find some other method?"

Hashirama, observing Izuna's uncharacteristic unease, realized the gravity of the situation. "If even Izuna is shaken, this must be serious," he thought.

Tenzō chuckled. "The how and why are irrelevant. What matters is the power I now possess—power enough to crush both Uchiha and Senju!"

Izuna smirked despite himself. "You talk big, old man. Let's see if those fancy eyes of yours can back it up!"

Yan Release: Eight-Span Magatama!

Susanoo's right hand conjured a massive eight-span magatama, cloaked in the black flames of Amaterasu, which was hurled at Tenzō with terrifying force.

"Hmph!"

Tenzō raised his hand, and chakra surged around his palm, forming a golden lion's head.

With a single strike, he shattered the magatama into countless fragments, each piece scattering across Hyuga City and detonating upon impact.

The powerful attack, capable of leveling entire battalions, had been neutralized effortlessly.

"No way…" Hashirama whispered, his disbelief growing.

"That's it?" Tenzō mocked, his voice dripping with disdain.

Before Izuna could respond, Tenzō disappeared from view.

"Left eye!" Izuna muttered, his left eye spinning rapidly as he activated his Mangekyō Sharingan to predict Tenzō's movements.

Susanoo's arms crossed just in time to block Tenzō's strike—a devastating palm thrust aimed directly at its chest.

Soft Step Twin Lion Fists!

The impact sent Susanoo flying backward, crashing through countless walls and buildings. Izuna was forced to reinforce his defense, controlling Susanoo to maintain balance as they hurtled through the air.

Meanwhile, Hashirama took advantage of Tenzō's brief focus on Izuna to launch his own attack.

Wood Release: Double Strangulation Technique!

Vines surged from the ground, wrapping around Tenzō's legs and binding him in place.

"Don't underestimate me!" Tenzō snarled, clapping his hands together.

Revolving Heaven!

A massive sphere of rotating chakra erupted from Tenzō's body, obliterating the vines and reducing the surrounding buildings to rubble.

Hashirama was thrown back by the force of the technique, landing in a heap amid the debris. He stared at the glowing chakra sphere in shock.

"Is that… really Revolving Heaven?" he muttered, struggling to comprehend the scale of the technique.

From his vantage point, Izuna observed the destruction with narrowed eyes. "This is bad. Even Hashirama is being pushed back… If Tenzō has truly mastered the Tenseigan, this battle is going to be much harder than I thought."

Tenzō, standing at the center of the chaos, looked down at his trembling opponents and smiled. "Prepare yourselves, Uchiha Izuna, Senju Hashirama. Today, the Hyuga clan will rise above you both!"

End of the Chapter.