Nuclear Explosion Technique

Boom!

The earth groaned. The earth trembled.

It was as if the heart of the planet was struggling to beat.

After the blinding flash came a visible ring of superheated shockwaves.

The terrifying shockwave churned the invisible air into rippling waves, hurling everything in its path into the sky and tearing it to pieces!

It spread for dozens of kilometers, reaching even the spot where Natsu Yuu and Madara stood.

Fortunately, its power had weakened countless times over by then, not enough to harm either of them.

But if they had been any closer—

Closer to the center of the nuclear explosion—

With a ninja's high attack and low defense, they would have been vaporized in an instant.

Even Madara, with Susanoo activated, couldn't be sure he could withstand the terrifying force at the center of the blast.

Watching the explosion in the distance, Natsu Yuu couldn't help but marvel. It was his first time seeing a nuclear explosion with his own eyes.

The spectacle was every bit as shocking as he'd imagined. It far surpassed the explosion of a Tailed Beast Bomb! Even just by appearance, it was much more ferocious.

And as for its actual power—

This medium-yield "Dongfeng Express" was impressive in its own right.

It was hard to say whether it matched a fully charged Tailed Beast Bomb from the Nine-Tails.

But it was certainly far more powerful than an ordinary Tailed Beast Bomb...

Besides, the most terrifying thing about nuclear weapons wasn't the blast itself. It was the long-lasting nuclear radiation that followed.

It was like a vast death barrier that could last for decades and wipe out all life within its reach!

And it required no Chakra to maintain.

Anyone who tried to return to this area and rebuild Iwagakure would be ravaged by the radiation.

They would either waste away here or flee.

Unless someone in this era could discover the principles of nuclear energy and radiation, it would be difficult to find a way to fight it.

It was a little cruel.

But this was exactly the effect Natsu Yuu wanted. It was the only way to eliminate Iwagakure once and for all!

Come to think of it, the system's Modern Item Redemption Vouchers were surprisingly useful.

They could actually redeem a "Dongfeng Express"!

He'd have to reassess the value of these Modern Item Redemption Vouchers and use them more sparingly from now on.

"So, what do you think? That should take care of the battlefield, right?"

Natsu Yuu said with a slightly smug smile.

"What kind of jutsu is this? It doesn't even have a trace of Chakra!"

Madara was utterly bewildered and shaken.

This was clearly beyond the basic understanding of a ninja.

It was like a magical girl suddenly appearing in the real world and casting a Comet Azur right in front of you. It would be perfectly natural for your entire worldview to fall apart!

"Nuclear Release: Nuclear Explosion Technique."

"There's a Release Technique like that?"

"It's a Senjutsu from another world, I suppose. Ordinary ninjas would have a hard time learning it."

Madara frowned slightly, still unwilling to give up.

"Even I couldn't learn it?"

"This Release Technique is far more complicated than an S-rank jutsu. It would be difficult for one person to master. If Konoha can develop normally, perhaps in a few decades, you might get lucky and figure it out."

Madara nodded and didn't press further.

He was indeed interested in such a powerful Release Technique, but there was no need to learn it right away.

He could take his time.

He'd find a way to get this power from the Sage of the Dao Path eventually.

Besides, in his eyes—

Maybe this was another deliberate show of force by Natsu Yuu?

A warning that he could easily wipe out an entire Ninja Village, too?

With his unfathomable teleportation and such a terrifying Nuclear Release, Madara had raised Natsu Yuu's threat level above Hashirama's.

If Natsu Yuu suddenly teleported behind him while he was asleep and hit him with one of these, he might not even get the chance to activate Susanoo!

Damn that guy. Damn Natsu Yuu. He won't make me submit with threats like this!

Madara seethed inwardly, growing ever more wary of Natsu Yuu.

However—

He'd thought of another question.

"If you have such a powerful Release Technique, why did you need me to destroy Iwagakure?"

Natsu Yuu explained casually:

"Sages generally don't interfere too much in worldly affairs. You destroyed Iwagakure. What does that have to do with me?"

Madara was taken aback. His understanding of Natsu Yuu's shamelessness deepened.

You call this not interfering too much?

You practically destroyed the village yourself!

And what kind of Sage goes around calling himself a Sage all day?

Tch!

That scheming bastard's probably just as underhanded as Tobirama!

Madara thought scornfully.

Of course, he showed nothing on his face.

What Natsu Yuu had said was indeed just an excuse.

In truth, Natsu Yuu really couldn't personally carry out a large-scale massacre.

The system had warned him: since Natsu Yuu didn't belong to the Naruto world, the world constantly rejected him. Only the system's concealment allowed him to act normally.

If he personally killed too many people, the world's rejection could intensify, further affecting the main quest of unifying the world.

Naturally, he couldn't reveal these secrets.

That was why Natsu Yuu had to support a faction and use Konoha's hand to truly destroy its enemies and unify the Shinobi World!

Fortunately, there were limits to that.

If some fool thought he was an easy target, Natsu Yuu wouldn't hesitate to send them all back to the Pure Land.

Before long, Madara noticed something else was wrong.

"Hm?"

"What's this...?"

Under the influence of an invisible force, the strength of the flesh at the surface of his skin began to weaken. It seemed a tiny number of his cells were mutating.

The effect was very faint, almost impossible to notice.

But a powerful man of Madara's caliber knew his body to an almost inconceivable degree.

He could sense even the slightest change with perfect clarity.

Naturally, he noticed the faint damage the nuclear radiation was doing to his body.

"You can feel the radiation?"

"What is radiation?"

"An invisible force that can steadily weaken a ninja's physical strength. You can think of it as a large-scale barrier that lasts a long time and is difficult to resist. Anyone who stays inside will gradually rot away and die..."

Madara understood the gist of it and couldn't help but frown.

"I see. So this is what you meant by taking care of the battlefield?"

"Then no one will be able to rebuild Iwagakure."

"Hmph!"

"What a cruel method. You're more like a demon than a Sage."

"Even that bastard Tobirama can't compare to you..."

Natsu Yuu laughed and shook his head, unconcerned.

He'd already been very restrained. He'd only sent the "Dongfeng Express" after Iwagakure had been reduced to rubble.

There would inevitably be sacrifices on the road to unification.

Natsu Yuu had been prepared for that from the start.

Besides, compared to the Third and Fourth Shinobi World Wars launched by Madara and Obito, these sacrifices weren't even a fraction of the total.

"Enough. Now you should fulfill your promise, shouldn't you?"

Madara fixed Natsu Yuu with a stern gaze and pressed him again.

"Now isn't the time..."

Natsu Yuu could indeed choose any point in time to enter another parallel Naruto world.

But once he chose a fixed point as an anchor, the next time he went there, he'd have to follow the timeline forward from that point.

In short—

He could take Madara to see the Fourth Ninja World War in Naruto World 5 right now. But once they'd seen it, he wouldn't be able to take anyone there to see it again.

So he'd hold on to the opportunity for now.

Once he had enough people gathered, he'd take them all over to watch.

That would maximize the effect and benefits.

"That's a poor excuse. Even my patience has its limits..."

Madara's tone grew increasingly hostile.

Even knowing he might not be able to defeat Natsu Yuu, he wouldn't allow himself to be deceived and toyed with any longer.

"But I can take you to see the future first."

Natsu Yuu changed his tune.

After all, the Unification Progress in Naruto World 1 had passed fifty percent, and the system had lifted some restrictions.

He could now bring two more subordinates from his allied faction to other worlds.

He couldn't take Madara to see the Fourth Great Ninja War just yet, but he could already bring him to visit other worlds.

"Oh?"

Madara's eyes lit up. He was about to say something—

But Natsu Yuu had already activated World Teleportation, taking him away from Naruto World 1 in an instant.