Naruto: Uchiha Izuna with system

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No wonder Izuna yelled and cursed in frustration.

He had initially thought that activating his Perfect Susanoo would be enough to quickly turn the tide of this war. On top of that, Madara had finally started teaching him Sage Mode.

Although a little late, this development was far better than what had originally occurred. Yet, Izuna never expected that before his Perfect Susanoo and Madara's Sage Mode could fully manifest, Senju Hashirama would make the first breakthrough.

While it wasn't as monstrous as the legendary "Buddha-Transformation Jutsu", the rate of Hashirama's progress far surpassed what most shinobi could achieve in a lifetime.

The Hundred-Armed Avalokitesvara before him appeared to be a prototype of the Thousand-Armed Wooden Golem and the Buddha-Transformation Jutsu that Hashirama would later perfect. As for why Hashirama didn't use it in the future, the answer was simple: awakening such overwhelming Wood Release techniques had made those earlier abilities obsolete.

If the Buddha-Transformation Jutsu was a match for a Perfect Susanoo, then the Colossus of Avalokitesvara standing before him rivaled the Armored Susanoo in strength.

"I'm beginning to understand why my brother hates you so much, Hashirama," Izuna muttered.

For the first time, Izuna experienced the overwhelming suppression of Hashirama's power firsthand.

Perched atop the Hundred-Armed Avalokitesvara, Hashirama frowned, not understanding Izuna's words. He simply bellowed, "Everyone, retreat! The battle between me and Izuna is not something you can interfere with!"

Hashirama performed a series of hand seals, and the five smaller faces on the Avalokitesvara's forehead opened their mouths, unleashing five streams of energy.

"Water Release: Heavenly Tears!"

"Fire Release: Flaming Skull!"

"Earth Release: Mud Bomb!"

"Wind Release: Vacuum Wave!"

"Lightning Release: False Darkness!"

The Uchiha ninja who had scattered gritted their teeth. "He's using that wooden construct to release ninjutsu of five different natures at once?!"

Izuna's eyes narrowed as he commanded Susanoo's other hand to form a spinning Eight-Trigram Magatama, imbued with Amaterasu flames.

"Blaze Release: Eight-Fold Magatama!"

Izuna hurled the technique toward the incoming elemental attacks. "Attributes are meaningless. Let's settle this with raw power, Hashirama!"

While it was true that elemental advantages didn't matter at this level of power, Hashirama's techniques weren't weak in the slightest.

The clash of their techniques unleashed a devastating shockwave that obliterated the surrounding area. The only reason Izuna and Hashirama remained unscathed was thanks to the protection of Susanoo and Wood Release.

"Let's finish this, Izuna!" Hashirama roared, clapping his hands together. The hundred arms of the Avalokitesvara rained down a flurry of punches at Susanoo with hurricane-like force.

Izuna controlled Susanoo to grasp the Amaterasu Blade in both hands and counterattack. The two titans clashed, shaking the battlefield of Congyun Mountain to its core.

The battle raged on for an entire day and night without a clear victor. Eventually, it was Hashirama who exhausted his chakra first, forcing him to retreat. Izuna, recognizing that he couldn't press his advantage, ordered his forces not to pursue.

This battle marked the beginning of a legend.

Under the leadership of Uchiha Izuna, Senju Hashirama, and the third clan—the Uzumaki—their prowess earned them the title of the "Two Heroes." The Uzumaki Clan had stood by the Senju, recognizing Hashirama's power as nearly equal to Izuna's.

In just a month, Izuna and Hashirama clashed five more times. Their battles became the talk of the Warring States Period, spreading across the land through stories told by ninja, samurai, and civilians alike.

Eventually, their title evolved into "The Two Heroes of the Warring States Period."

When Izuna first heard the title, he couldn't help but smirk. "Shouldn't this have been Madara's title alongside Hashirama? How did it fall to me?"

Even Madara, upon hearing the title, was struck by mixed feelings. Was he jealous that his younger brother had outshone him, or was it something else?

Izuna, however, had no time to ponder Madara's thoughts. A month later, Madara finally completed Sage Mode, mitigating the drawbacks of the Mangekyō Sharingan.

Despite this, Izuna was blunt with his brother. "Brother, even with Sage Mode, you're not ready to face Hashirama. His strength has surpassed yours. At best, it's a seventy-thirty split in his favor."

Madara clenched his fists but didn't argue.

"I know you're eager to return to the battlefield, but when you do, it must be decisive." Izuna paused. "Your first battle back will determine the outcome of this war."

Madara met Izuna's gaze and asked, "You have a plan, don't you?"

Izuna nodded. "Yes. The Uzumaki Clan has been observing us closely, waiting for me to summon my Two-Tails so they can seal it with their formidable techniques. But their sealing arts have no effect on your Mangekyō Sharingan."

Madara grinned. "So, the Uzumaki are mine to handle?"

"Exactly," Izuna confirmed. "I'll deal with Hashirama, while you handle the Uzumaki. After all, isn't one of their kunoichi our future family.

Madara crossed his arms, smirking. "Fine. I'll play the bad guy for you, Izuna."

End of the Chapter.