Naruto: Uchiha Izuna with system

Time flies.

In the blink of an eye, three months passed.

On the main battlefield, the Uzumaki clan joined the fray during the second major confrontation. Despite Senju's overwhelming numerical advantage, the stone fortress spanning Congyun Mountain—designed and fortified under Izuna's command—remained an unyielding bastion.

The war entered a brutal stalemate, with both sides locked in a suffocating cycle of offense and defense.

As time dragged on, the new generation of Uchiha and Senju shinobi—some barely into their teenage years—were forced onto the battlefield. It was reminiscent of Izuna's memories of the Warring States period in his past life, where entire nations, like Qin and Zhao, would clash in devastating wars that shaped history.

This was no longer just a battle—it was a war that would decide the fate of two clans.

The names of the "Warring States Two Heroes"—Uchiha Izuna and Senju Hashirama—spread far and wide, echoing across every battlefield in the Land of Fire and even reaching the lands of Wind and Lightning.

Every time the two titans clashed, they instinctively moved the battlefield away from their respective camps. Neither wanted their own forces caught in the fallout of their world-shattering battles, which often reshaped the land itself.

Senju Hashirama's mastery of Wood Release earned him the title of "God of Shinobi", a moniker that resonated across the land. Opposing him stood Uchiha Izuna, hailed as the "Emperor of the Ninja World" by his clan, a reflection of his unparalleled mastery over the Mangekyō Sharingan and Susanoo.

Within the Uchiha ranks, Izuna wasn't just revered for his martial prowess. His influence extended beyond the battlefield, symbolizing the clan's unshakable will. His evolution of the Mangekyō Sharingan was seen as a feat surpassing even Madara's.

Madara himself was recovering in the Uchiha stronghold, bitterly frustrated by his nearly blind state. Though 80% recovered from the injuries sustained in the battle against Kaguya, his inability to return to the battlefield gnawed at him. Izuna, aware of the risks to Madara's health, firmly forbade him from activating his Sharingan, fearing it could lead to permanent blindness—or worse, death.

Though Madara begrudgingly complied, his frustration simmered. Izuna's reassurances about the future restoration of his vision were the only thing keeping him from rebelling outright.

Meanwhile, in the northern battlefront, the Uchiha forces under Ishiki faced relentless pressure from the Kaguya and Hatake clans. The disparity in numbers was glaring, and even Ishiki—a veteran Kage-level shinobi—struggled to hold the line.

Uchiha Yukino, the elder and father of Ishiki, attempted to send reinforcements but was blocked by Madara, who refused to deplete the clan's reserve forces. "The last line of defense cannot be sacrificed for personal gains," Madara declared sternly.

Forced to retreat, Yukino could only watch as his son fought against overwhelming odds.

The intensity of the war made it clear to all that the era of Uchiha and Senju dominance was nearing its climax. Whichever clan emerged victorious would not only assert control over the other but likely usher in an era of unification for the Warring States period.

Smaller clans began aligning themselves with the strongest factions to ensure survival. Senju had already secured alliances with the Uzumaki, Kaguya, and Hatake clans, while Uchiha was left scrambling to court the remaining independents.

Clans such as Sarutobi, Shimura, and Hyūga became the focus of intense diplomatic efforts.

The Sarutobi and Shimura clans played both sides, feigning agreement while refusing to commit troops to either faction. Shimura Keizo, the cunning and ambitious patriarch of the Shimura clan, sought to exploit the eventual exhaustion of both Uchiha and Senju to seize power.

Izuna and Hashirama both saw through his ploy but could do little for now. They would have to settle accounts after the war.

The Ino-Shika-Cho alliance of Nara, Yamanaka, and Akimichi clans also maintained a neutral stance. When approached by Uchiha envoys, Nara Fukaku, the Nara patriarch, politely declined, citing the alliance's distant geographical position. Izuna, however, saw through the excuse, recognizing their reluctance to commit to a side until a clear victor emerged.

With few options remaining, both Uchiha and Senju turned their attention to the Hyūga clan, the third-largest faction in the Warring States. Despite their strength, the Hyūga had shown little interest in taking sides, likely preferring to avoid entanglement.

To everyone's surprise, the Hyūga patriarch, Tenzō Hyūga, issued a sudden and widespread invitation. He invited representatives from all major clans to celebrate his 40th birthday.

When Izuna received the invitation, his brow furrowed. The large character for "longevity" emblazoned on the scroll seemed almost mocking in the midst of a brutal war.

"Is there something wrong with Tenzō's head?" Izuna muttered to himself, unsure of what to make of this unexpected development.

End of the Chapter.

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