Naruto: Uchiha Izuna with system

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Izuna formed seals swiftly, his hands a blur. "Immortal Technique, Flame Release: Destiny to Control Flame!" he shouted.

The unleashed flames roared with a force rivaling a thunderclap, colliding head-on with Tobirama's Water Dragon Bite Explosion. The clash of elements created a massive explosion of steam, obscuring the battlefield as the water dragon evaporated. The fire surged forward unabated, forcing Tobirama to retreat.

"What kind of Fire Release is this?!" Tobirama exclaimed, astonished. His water techniques, usually impervious to fire, were overwhelmed.

Unfazed, Hashirama stepped forward, biting his thumb and slamming it onto the ground. "Summoning Jutsu: Triple Rashomon!"

Three massive gates with ominous ghostly faces erupted from the earth. The first two gates fell to the relentless flames, disintegrating almost instantly, but the third gate held firm, halting the inferno.

"Deputy Chief, we're here to assist!" Uchiha Inosuke and a group of elite Uchiha shinobi arrived on the scene, ready to join the fray.

Izuna turned slightly, issuing a warning. "Focus on Senju Tobirama! Watch out for his Flying Thunder God Technique—if he marks you, you'll have no escape."

He then turned his attention back to the battle, his right hand swelling with power as he formed a massive spiraling sphere of energy. "Immortal Technique: Super Large Rasengan!"

The enormous Rasengan slammed into the third Rashomon gate, shattering it into splinters. Uchiha forces poured through the breach, clashing violently with Senju and Uzumaki warriors.

As chaos erupted around them, Hashirama faced Izuna directly. "You've grown even stronger, Izuna!" he said with genuine admiration. "I don't think we've ever fought each other one-on-one before."

Izuna smirked. "True. Some people seem to prefer ambush tactics." His tone was sharp, clearly directed at Tobirama.

Before Izuna could say more, he leapt into the air just in time to avoid Tobirama, who emerged from the ground with kunai in hand.

"Missed again?" Izuna said mockingly as he landed. "The Immortal Mode makes it impossible for you to sneak up on me, Tobirama."

Tobirama clicked his tongue in annoyance. "Hmph. We're just doing what shinobi do best."

"Oh, congratulations, by the way," Izuna said with a grin. "After all, I left Kawaragi half-dead. Hashirama will likely take over as your clan leader, and you'll be promoted to his deputy. In a way, you should be grateful to me."

Tobirama's expression darkened, his rage bubbling over. "Water Release: Aqua Wave Surge!" He unleashed a massive spiraling column of water.

Izuna activated his Susanoo, the humanoid construct manifesting instantly. In its fully armored form, it towered over the battlefield, wielding an enormous chakra sword. The Susanoo cleaved through the waterspout, dividing it into harmless streams that fell to the ground.

"You're planning to use the Flying Thunder God to escape, aren't you?" Izuna's left Eternal Mangekyō Sharingan spun menacingly, reading Tobirama's intentions. He slammed his hand onto the ground. "Uchiha Flame Formation!"

A crimson barrier flared to life, encasing Tobirama and trapping his Flying Thunder God kunai inside. The escape route was sealed.

"Now you die," Izuna said coldly.

The Susanoo raised its massive hand, hurling spinning magatama infused with black flames. "Eightfold Magatama of Amaterasu!"

"Wood Release: Wood Ghost Face Technique!" Hashirama shouted. A defensive wall resembling Rashomon rose to block the attack.

Before the magatama could strike, Tobirama added his own technique. "Wood Release: Double Tree Strangulation Technique!" Vines erupted from the ground, wrapping around Susanoo and binding its arms.

Izuna's right eye blazed. "Amaterasu!" The black flames engulfed the vines, burning them to ash. Susanoo flexed its arms, shattering the remnants of its restraints.

Watching the battle, Hashirama couldn't help but admire Izuna's skill. "Your control over Susanoo surpasses even Madara's," he admitted. "But let's see how you handle this."

Hashirama clasped his hands together, his chakra surging to an unimaginable level. The ground trembled beneath him. "Wood Release: Birth of the World of Trees!"

Massive vines erupted from the ground, towering above even Susanoo. They wove together into a colossal forest, surging toward the Uchiha forces with incredible speed.

"Here it comes, Deputy Chief! Be careful!" Inosuke shouted from behind.

Izuna's Susanoo raised its blade, which was now cloaked in black flames. "Amaterasu Blade!"

The burning sword slashed through the approaching trees, carving a fiery path of destruction. The vines recoiled, but Hashirama's chakra only fueled their relentless growth.

"Hashirama's chakra is limitless," Izuna muttered under his breath. "It's like fighting an entire army by himself."

Summoning all his strength, Izuna formed a new technique. Wind blades sprouted from the edges of a spiraling Rasengan in his right hand. "Immortal Technique: Wind Release, Rasenshuriken!"

He then infused the technique with the black flames of Amaterasu. "Fire Release: Black Inferno Style!"

The Rasenshuriken, now a deadly combination of wind and fire, roared to life. Izuna hurled it forward. "Scorch Release: Nimbus Tempest, Black Zephyr!"

The attack tore through the forest, disintegrating the massive trees in its path. Even Hashirama's composure faltered at the sheer power of the technique. "What is that jutsu?" he muttered, momentarily stunned.

The battlefield fell silent as both sides watched the destructive force carve through Hashirama's forest.

"Monster!" one Senju shinobi exclaimed, echoing the thoughts of many.

Hashirama narrowed his eyes, his resolve unwavering. "If I don't stop him here, the entire battlefield will fall to the Uchiha."

As the smoke cleared, Izuna stood atop his Susanoo, his presence commanding. The battlefield bore the scars of their battle—entire sections of the forest reduced to ash, with countless craters left behind by his jutsu.

"You're just like Madara," Hashirama said, his voice tinged with both admiration and determination. "A true monster."

Izuna smirked, his Mangekyō Sharingan glowing ominously. "And you, Hashirama, are the only one on this battlefield worthy of facing me."

End of Chapter.