Naruto: Unifying the Ninja World, Invaded by Naruto’s Team

Ryuji didn't doubt his opponent's Otsutsuki identity, as they lacked Byakugan and horns!

In a story centered on Naruto and Sasuke, these were Otsutsuki hallmarks.

No Byakugan, no horns? Otsutsuki? A joke!

"Emperor 22 years ago. So, a ruler of recent years. Not bad, worthy of note. But with this attitude, are you refusing me?" Isshiki smiled faintly, his expression calm.

"Those words should be mine. Join the Empire, and I'll treat you well. How about it?" Ryuji replied with a flat expression.

"Oh? So arrogant. Since you refuse, die!"

As Isshiki finished, his body flashed like lightning, darting before Ryuji. His right leg swept horizontally, top-down, slamming Ryuji's right shoulder.

*BANG!*

Terrifying force erupted.

The atmosphere quaked, the ground within hundreds of meters around Ryuji exploded, rocks flying.

Yet Ryuji, under Isshiki's shocked gaze, didn't budge.

"You refused and attacked me a second time. I don't care about an ant's provocation, but an Emperor's dignity can't be tarnished. Farewell, nameless ant."

As Ryuji spoke, his fist, as big as Isshiki's head, struck hard.

*SWOOSH!*

Isshiki's pupils shrank sharply, feeling unprecedented danger.

He tried dodging, but it was too late.

His spatial ability was locked!

He wanted to activate his final form, but too late!

He could only watch the fist approach.

His mind flashed with images—of his Otsutsuki clan's home planet, arriving in the ninja world with Kaguya, and being gravely wounded by her sneak attack, lingering until now.

'Why am I thinking of this?'

A strange thought arose.

Ryuji's fist smashed his head!

*BOOM!*

With the explosion, Isshiki's body turned to ash, like paper meeting fire.

The fist's residual force spread backward.

The ground seemed pushed by invisible hands, parting aside, clouds in the sky split by the strike.

The terrifying power lingered long.

Before Ryuji, a vast chasm appeared.

Fan-shaped, hundreds of meters deep, stretching tens, hundreds of thousands, perhaps millions of meters… endless.

Even the sky's clouds were torn apart.

One strike silenced heaven and earth!

Ryuji slowly withdrew his fist, turning back to the giant tree.

He wasn't curious about this unknown figure.

◆━⊰✧⊱━◆

Simultaneously.

In an underground chamber.

Isshiki, reincarnated via Karma, wore a blank expression, only later realizing. "I died?"

"Truly a terrifying lowly creature. I don't know what happened, but I'd better stay quiet."

"My remaining chakra can sustain me long. Living's always better than dying. If I'd used full power from the start, it wouldn't have ended like this… I was careless…"

Isshiki decided, curling up quietly.

◆━⊰✧⊱━◆

Holy Land.

The Sage of the Six Paths watched Isshiki and Ryuji's fight, his eyelids twitching. "This strike was extraordinary, no less than the last. The key is its casualness, as if every strike could do this…"

"Surrender, my friend." the old toad said again.

"Perhaps you're right. Resistance before absolute power is futile…"

The Sage felt unprecedented helplessness.

The next moment, he vanished from the Holy Land, appearing before Ryuji.

Ryuji saw the Sage, raised an eyebrow, and lowered his crossed arms.

This startled the Sage, who waved hurriedly. "Emperor from another world, please don't act rashly! I'm here to surrender."

"Surrender?" Ryuji showed an odd expression. "You don't intend to fight me?"

"Fight? The Emperor jests. With your power, how could I fight?" The Sage smiled awkwardly.

"Oh? Really?" Ryuji frowned, pondering.

In his original world, the Sage fought him, and he killed him. But this ninja world's Sage surrendered outright.

'Is it because I'm too strong now?'

'The previous Sage thought he had a chance, so he fought. This Sage, seeing my power, thinks he has none, so he surrenders.'

'This old man's no fool. Knowing when to yield makes a hero. Good!'

"I understand. Step back, wait for the fruit to ripen, and we'll go to the Empire together." Ryuji said.

"Agreed?" The Sage was slightly shocked.

Letting a ninja world remnant like him live was risky.

He was ready to sacrifice or share his power, but was accepted so easily?

"Of course. Our enemy is the cosmic Otsutsuki. Your joining adds strength. I've no reason to refuse." Ryuji said.

"Cosmic Otsutsuki… Your Majesty means Mother's kin?" The Sage asked.

"Right. I've heard many Otsutsuki hide in the ninja world. Oddly, as I absorb its chakra, they're holding back. Perhaps they're not here now, but on the moon or another planet?" Ryuji said.

"More Otsutsuki?" The Sage was shocked.

He didn't know how other Otsutsuki compared to Mother at her peak. If all were like her and numerous, even Ryuji's current power might be at risk.

Mother's power was partly split to him and Hagoromo. Without that split, even Ryuji might not have defeated her so easily.

The Sage, evolved from peak Kaguya's power, thought this.

His expression grew serious. "So that's it… No wonder Your Majesty gathers people from two worlds to fight the Otsutsuki. I understand. For our world, I'll contribute some power."

"Good thinking. Now, let's wait calmly for the fruit to ripen. Meanwhile, stay vigilant for sneak attacks."

Ryuji finished, resuming his wait.

Time passed, day turned to night.

The ninja world's energy dried up, soil cracked, forests and plants withered, oxygen and energies grew scarce.

The repaired Divine Tree absorbed the ninja world's energy, producing a giant fruit tens of meters in diameter.

Ryuji shouldered the fruit, took the Sage back to the Empire, and crushed it.

Emerald-green energy spread across the Empire.

Plants, birds, beasts, and people touched by this power changed variably.

Plants grew lusher, sprouting taller instantly, flowers brighter and fresher.

Injured birds and beasts healed, their feathers glossy, appetites growing.

Empire people felt unprecedented refreshment, lighter, with martial arts training speed rising…

The Empire now held chakra, natural energy, and other energies from two worlds.

Basic martial arts and ninja training speed doubled!

This discovery thrilled everyone.

They trained harder for a thriving Empire.

◆━⊰✧⊱━◆

Time flowed like water; a year passed quickly.

Empire Capital outskirts.

Two figures appeared suddenly.

One had shoulder-length black hair, wore a black cloak, and held the Kusanagi sword.

The other had blonde hair, blue eyes, and a Konoha headband.

These were Uchiha Sasuke and Uzumaki Boruto from the Boruto World!

They frowned at their surroundings, then stared at the turtle in their hands.

"Warning! Warning! Time displacement far off desired coordinates!" The turtle opened its mouth, shouting.

"Aaaa! It talks!" Boruto lifted the pink turtle, yelling, slightly scared.

Future Sasuke, black-haired and one-armed, narrowed his eyes, glaring at the pink turtle.

"This place doesn't match the time displacement's target set by Lord Urashiki Otsutsuki." the pink turtle said.

"You said time displacement?" Future Sasuke raised an eyebrow. "Where are we now?"

"The past world, but due to severe coordinate deviation, we've arrived in the era when the Fifth Hokage, Tsunade, led Konoha." the pink turtle said.

"Godaime…" Future Sasuke frowned.

"Is that true?" Boruto was skeptical.

"True." the pink turtle replied.

"Where's Urashiki? You said we deviated. Did he go to another era?" Future Sasuke asked.

"Lord Urashiki set the time displacement coordinates to Uzumaki Naruto's childhood, but due to a spatial displacement error, we arrived slightly later than the target era."

"Lord Urashiki, separated from us, will arrive in a few days." the pink turtle said.

"A few days?" Boruto asked.

"So Urashiki's target is Naruto." Future Sasuke said firmly.

"Eh?" Boruto was startled.

"He said he wanted to harvest that stinking fox's chakra, meaning he planned to attack young Naruto. Luckily, we arrived first." Future Sasuke said.

"So he's targeting Dad when he was little…" Boruto's eyes sharpened. "We just need to find Dad before Urashiki and protect him, right?"

"Exactly." Future Sasuke nodded.

"As future humans, allow me to share precautions…" the pink turtle said.

"By the way! What even are you? Urashiki's friend?" Boruto impatiently interrupted.

"I'm a spacetime device, without the concept of allies as you mean, so I have no gain-loss ties with Lord Urashiki. My mission is to execute time displacement and share precautions."

"What precautions?" Future Sasuke asked.

"First, as future beings, you must not reveal this to past people, especially not interfere with those close to you."

"What if our identity's exposed or we interfere?"

"It could excessively impact the future. Every action in the past risks altering the future. Act cautiously."

"Consider carefully the risk of future people or things vanishing."

Hearing this, Boruto and Future Sasuke's expressions grew serious.

Their next actions needed extra care!

They leaped to the tallest tree, preparing to find Konoha's direction, but upon reaching it, they froze.

What kind of world was this?

Above the clouds, a massive floating fortress.

Below, steel skyscrapers stood tall, mechanical puppet birds and oddly dressed people flew in the sky.

"Where are we? Uncle Sasuke? In Granny Tsunade's era, the world had such advanced cities? Why's it livelier than Konoha?" Boruto asked, stunned.

He hadn't expected the world a decade ago to be so advanced.

Future Sasuke was equally shocked, blinking, then grabbed the pink turtle, forcing its eyes open toward the distant city. "What's this? I don't recall such things in Tsunade's era."

"Incomprehensible… checking… error… error… spacetime coordinates incorrect, please verify timeline yourself…" The pink turtle said, stunned.

"Useless stinking turtle." Boruto cursed. "Anyway, Dad's in this world, and Urashiki's coming in a few days, right?"

"Yes, Uzumaki Naruto is in this world, no mistake. Lord Urashiki will arrive in a few days." the pink turtle confirmed.

"Then, Uncle Sasuke, let's investigate there, find the way to Konoha, and protect Dad!" Boruto said.

"That's all we can do. Our goal is to protect Naruto. Against an opponent like Urashiki, past-era people can't match him, unless… Never mind, that's impossible."

Future Sasuke recalled his Six Paths power glory in the Fourth Great War, sighed inwardly, shook his head, and dismissed unnecessary thoughts.