Naruto: Uchiha Survivor Forced to Save the Shinobi World

As the horde of demons was summoned to the 'Infinity Castle' by the mysterious figure using the shinobi world's 'Summoning Technique,' battles erupted in every corner of the castle within moments.

Whether it was the Hidden Sand shinobi trapped within, the Akatsuki duo of Itachi and Kisame, or the rampaging Five Paths of Pain, all were ambushed by the demons.

However, after the series of battles in the Grass Country, the shinobi had gained a deep understanding of the demons' capabilities.

Moreover, the shinobi caught in the 'Infinity Castle' were, at their weakest, seasoned Hidden Sand veterans. Thus, despite the demons' ferocious momentum, the tides of battle didn't tilt in their favor.

In some localized battlefields, scenes even emerged where demons were easily dispatched by shinobi.

On one street, several demons were trapped in a quagmire, struggling and cursing, but no matter how they thrashed, they couldn't break free.

Nearby, a group of Hidden Sand shinobi led by Chiyo rested and attempted to contact their comrades, ignoring the demons flailing in the mire.

Clearly, they had mastered a method to counter the demons!

If they couldn't kill them outright, trapping them was enough. The shinobi world had plenty of ninjutsu capable of restraining humanoid monsters like the demons, whose size wasn't particularly large.

Elsewhere, Yūra of the Hidden Sand brushed past a demon, shouting, "Scorch Release: Steaming Murder!"

Sizzle sizzle sizzle.

In an instant, the demon seemed to be desiccated, reduced to a shriveled mummy in mere breaths.

Though the demon gradually began to recover, Yūra's 'Steaming Murder' had clearly overtaxed its demonic vitality. A few more hits, and it would likely collapse.

In a narrow alley, several demons stood motionless, frozen in place.

Itachi walked past them, his demeanor calm.

Kisame, following behind, marveled, "Itachi, your genjutsu can even control these monsters?"

Itachi didn't break his stride, replying blandly, "By siphoning shinobi chakra, they've gained shinobi powers, but that also gave them weaknesses. I merely found and exploited those weaknesses."

Kisame pursed his lips. "Plenty of others must have tried that. If it was that easy, it would've spread by now!"

Itachi explained, "Their physiology does differ from ours, so standard genjutsu struggles against them. But with careful observation, making genjutsu effective isn't difficult."

"Tch, easy for you, maybe!" Kisame spat lightly before asking, "Itachi, what's our next move?"

Itachi surveyed the streets of the 'Infinity Castle.' "Every technique has a weakness."

Kisame hefted his Decapitating Carving Knife onto his shoulder. "Got it!"

Of course, not every battlefield favored the shinobi.

In a residence within the 'Infinity Castle,' Kokushibo, 'Upper Rank Two,' was gorging himself without regard for appearances. Before him lay the scattered corpses of several Hidden Sand shinobi.

Not far away, the demonized Tanjiro, 'Upper Rank One,' had slain another Hidden Sand shinobi, silently consuming them to restore his demonic vitality and chakra.

Meanwhile, the demonized swordsmen, bolstered by the chakra supplied by the mysterious figure, charged straight for the Five Paths of Pain. They encountered the Asura Path and Human Path on a long street.

A fierce battle erupted instantly!

The six swordsmen were all Hashira-level, elite warriors. Before becoming demons, each had undergone rigorous training and awakened their Demon Slayer Marks. Among them, the Stone Hashira Gyomei Himejima, Serpent Hashira Obanai Iguro, and Mist Hashira Muichiro Tokito had reached the 'Transparent World,' granting them Byakugan-like perception and a limited ability to sense killing intent.

This was why, with just seven of them, they had forced the Hidden Stone and Hidden Cloud armies to rendezvous prematurely, at the cost of only one loss.

The sole casualty, Insect Hashira Shinobu Kocho, had fallen to a surprise attack by the Third Tsuchikage Ōnoki's 'Dust Release.'

Boom boom boom!

A series of explosions rang out along the street.

The Asura Path's arsenal of weapons activated the moment they encountered the demonized swordsmen, and in mere moments, the entire street was engulfed in a sea of flames.

Whoosh.

At that moment, a massive meteor hammer pierced through the flames, hurtling with a whistling sound toward the Asura Path from behind.

Though it came from a blind spot, the Asura Path seemed to anticipate it, turning to seize the meteor hammer with one hand. With unimaginable strength, they yanked the chain, pulling the Stone Hashira on the other end toward them.

Simultaneously, the Human Path's gaze shifted from behind the Asura Path. In a flash, they lunged toward the Love Hashira and Sound Hashira ahead, reaching out with both hands.

Though the Love Hashira and Sound Hashira unleashed their Breathing Techniques and slashed with their sword forms, the Human Path was lightning-fast. In a single dodge, they closed the distance, pressing a hand to each of their heads.

The two tried to counter with their swords, but in an instant, their thoughts slowed, and their bodies grew heavy.

Undoubtedly, the moment the Human Path's hands touched them, they activated the Rinnegan's ability, extracting their souls.

Swish!

But just as the Human Path prepared to read the memories of the Love Hashira and Sound Hashira, a flash of swordlight severed their left arm, saving the Love Hashira from having her soul fully extracted.

The Human Path's expression darkened. With their remaining right hand, they gripped the Sound Hashira and leapt back, retreating to the Asura Path's side.

By this time, the Stone Hashira, pulled in by the Asura Path, had sliced open the Asura Path's chest with a sickle. However, the Asura Path, now transformed into a three-headed, six-armed form, restrained the Stone Hashira with three pairs of hands and pierced their body with a long blade extending from their back, pinning them to the ground.

In their first exchange, the Human Path lost an arm but secured the Sound Hashira, while the Asura Path and Stone Hashira were locked in mutual restraint, with the Asura Path clearly holding the advantage.

As the remaining Mist Hashira, Serpent Hashira, Love Hashira, and Wind Hashira prepared for a second wave of attacks, glaring fiercely.

whoosh whoosh whoosh.

With a series of rushing sounds, the Animal Path, Preta Path, and Hell Path descended from above, landing on the battlefield.

Not only that, the giant summoned beasts brought by the Animal Path arrived with earth-shaking roars, charging onto the scene with unstoppable momentum.

The four Hashiras exchanged glances.

The enemies before them were far stronger than anticipated, but with no way out, they shared a look and, without a moment's hesitation, launched their next assault.