Godzilla In Konoha

"For the humanoid beings of this universe, monsters born according to cosmic rules are the ultimate filter."

Yuuji opened a vast spatial tunnel, leading the way for Planet Godzilla to retrace its path back to the Monsterverse.

As they journeyed, Yuuji chatted casually with Kabuto.

"What is a filter?"

"Simply put, it's a mechanism that impedes the progress of a species or civilization. Every group faces a great filter, and only a few overcome it." Yuuji explained.

The concept of the Great Filter had been a topic of study among scholars in his previous life.

Humans, having not yet discovered other intelligent civilizations, hypothesized the existence of one or several complex filters that would wipe out intelligent life.

Some believed that the emergence of intelligence and the establishment of civilization were humanity's Great Filters, suggesting that humans had already overcome significant challenges.

Others proposed that controlled nuclear fusion was the genuine Great Filter, without which humanity's future would be bleak. It would inevitably exhaust the resources of Earth and the moon, and the high costs of colonizing other planets would make it unfeasible.

Even if Mars were colonized, it would only be a slow death, trapping life within the solar system. This might be why no other intelligent civilizations were discovered—they were all trapped within their star systems, unable to venture out, let alone travel between stars or galaxies.

In his previous world, Yuuji didn't know the Great Filter was for humans.

But in the Monsterverse, it was clear: the inevitable emergence of monsters represented the most significant barrier in front of all technological civilizations, an almost impossible filter.

As far as Yuuji knew, no civilization in this universe had defeated a monster with technology to pass this barrier.

All failed before the monsters. Those lucky enough left only a few hundred or thousand survivors struggling to avoid detection. The less fortunate were wiped out entirely.

Time passed as Kabuto eagerly learned about the situation, astonished.

He couldn't fathom such a universe—not just the existence of monsters, which he could understand having seen Planet Godzilla, but he was genuinely baffled by how frail those universe's humans were. Without chakra to enhance their abilities, relying solely on intellect to develop various ninja tools?

"Don't underestimate them. A technological civilization is a typical collective civilization. Individual beings are fragile, unable to defeat common wild beasts like lions or tigers. But once they are numerous enough and establish a comprehensive system, the power they unleash is incredibly formidable."

Yuuji had never underestimated those without supernatural powers but climbed the technological tree. He came from such a civilization in his past life and knew well the advantages of technological civilizations.

A single individual might be weak, but what if they wore powered armor? Or have they had a few hundred or thousand energy weapons in the form of war robots? And if these weapons were controlled by advanced artificial intelligence?

If such a fully equipped human arrived in the Naruto world, they could slaughter Chunin and Genin as quickly as slaughtering dogs.

Are ninjas fast? Faster than the analytical capabilities and predictive algorithms of intelligent programs?

They have ninjutsu? Ninjutsu is essentially a manipulation of energy, but can it stand against a cannon or a laser gun?

This is just an extreme situation because it is certainly not easy to train a warrior who can control a mecha.

However, manufacturing robots with intelligent programs is simple. These things alone are a dimensionality reduction blow.

Compared to this kind of robot, the cost of training a Chunin and Genin in the ninja world is too high.

The five major countries' total strength does not exceed 100,000 and the vast majority are Chunin and Genin.

For a complete technological civilization, mass-producing war machines on the assembly line are too simple, and loading intelligent programs is also a piece of cake.

Individually, superhumans utterly surpass technologically based individuals.

When scaled up, at least at the Chunin and Genin levels, a superhuman group would be slaughtered by a technological group, utterly powerless.

An advantage over a technological civilization might exist only at the Jonin level, who have mastered powerful power.

Both development paths have their merits, and any that can develop will be formidable.

As Yuuji and his group conversed, they barely noticed time passing. They saw endless nothingness after leaving the universe and passing through the tunnel leading to another universe.

Here, amidst the blank expanse, without even the basic concept of space and with time irrelevant, they finally burst through the barrier with a loud noise as Yuuji stood up, unleashing his formidable energy to tear open the barrier ahead.

The vast flesh and blood planet surged forward, entering a new world.

"Are we there?"

"I'm going crazy after such a long period of nothingness! I even had to enter the world of Infinite Tsukuyomi to survive this period of time."

"So many stars shining in the sky."

Yuuji and the other also looked up.

Their senses immediately detected the differences.

"Is it my imagination, or does my body feel..."

"It's not your imagination. Refining chakra here is harder as if something invisible is dragging me down."

"Probably different cosmic rules, but at least we can still use chakra and perform jutsu."

They conversed among themselves, their words tinged with excitement and a slight worry.

They understood the human situation in this universe and knew about the technological and monster civilizations.

They weren't worried about the monsters; a life planet could only give birth to one monster.

The scarcity of monsters meant that only a few top-tier combatants needed to deal with them.

The real challenge might be the technological civilizations, whose mass-developed high-tech, accessible to all, could pose a dimensional threat to their Genin and Chunin-class citizens.

The specific impact depends on the enemy's technological level and population.

"We're okay, but those with weaker powers might suffer more..."

"Let the Kage level lead the charge to reduce the pressure on the others."

"Use the Rinnegan early to open spatial gates and teleport our people inside the enemy lines, bypassing their powerful ninja tools."

Some were already devising tactics.

Their advantages were apparent, such as using various jutsu-like space-time techniques, secret techniques, etc., which are absolutely effective in war.

As for these forbidden techniques, it is foreseeable that the technological civilizations they have to face will not be able to develop similar technologies.

Wormhole technology? Extracting souls? Don't joke; if a technological civilization could develop such tech, they wouldn't be nearly exterminated by their planet's monsters.

"Prepare for battle immediately. Those remnants of technological civilizations might hinder us, but they won't be our equals. The key is to locate King Ghidorah."

Yuuji gave the order.

The massive war machine sprang into action, everyone eager to engage.

Meanwhile, as Yuuji's colossal form entered this universe, it inadvertently created subtle ripples.

King Ghidorah, perched in higher dimensions, became immediately alert.

And he sent a message to Metphies right away.

"So, it's finally come, the enemy that even King Ghidorah dreads so much... Who could it be? Is it a group of monsters as I and Haruo guessed?"

Metphies's heart skipped a beat, and he began organizing various civilizations, dispatching spacecraft in all directions to scout.

Ordinarily, locating a formidable enemy could take many years, even if a formidable enemy were detected.

The universe's vastness, with its endless light-years of distance, was enough to frustrate anyone.

As for detecting the other party's location? Even if the information travelled at the speed of light, it would still take years.

Many thought this way, and the tense mood quickly dissipated.

Even Haruo himself thought that the war wouldn't happen soon.

Years, maybe decades, might pass before either side could determine the other's location.

"Unless the enemy's monsters can also use something to lock onto coordinates and then deploy power directly from a higher-dimensional plane."

Haruo commanded the remaining Earthlings to prepare, subconsciously assuming there was plenty of time to prepare.

But what he didn't expect, what Metphies didn't expect, what no one expected, was that the enemy would arrive so soon!

"Unusual spatial distortions detected ahead!"

"It's unmistakable; even the light is being obscured. This must be man-made!"

"What is that? Oh no, they've launched an attack on our spacecraft!"

The spacecraft patrolling the solar system's outskirts and detecting anomalies were instantly wiped out.

Then, astonishing news came one after another, shocking every civilization into silence.

"Our most advanced spacecraft, gone without a trace?"

"Not even a single shot fired, and they lost contact just like that? How is that possible?"

"Who can manipulate space, causing advanced spacecraft to disappear without even sending a message... What kind of monster is this?"

"No wonder, no wonder it's an enemy that even King Ghidorah has to guard against. They also have spatial abilities!"

"Ladies and gentlemen, the situation is grim. One of the spacecraft has sent back scouting results, and after computer aggregation, we've initially reconstructed the appearance of our enemy... Our enemy is a planet."

"???"

The leaders of various civilizations stared wide-eyed.

Metphies and Haruo stood side by side; their expressions grave as they looked at the image before them.

This was not a direct photograph but a simulation reconstructed through various technological means.

But the result was absurd.

A planet?

"Is it a planet-shaped monster? A monster the size of ten Earths??" Haruo was bewildered.

This far exceeded his comprehension. A 300-meter-tall Godzilla had already stunned the young Haruo.

But a monster ten times the size of Earth? What was that even about?

"Although absurd, it's possible because this thing is alive, emitting heat..."

Metphies also felt a headache coming on.

The most basic thermal imaging technology showed a non-uniform, circular object.

Combined with other technological analyses, one thing was clear: this was alive.

Everyone was baffled.

A monster the size of ten Earths, alive, and emitting heat...

These concepts together overwhelmed everyone, leading to an intuitive sense of panic.

This was outrageous; how could they destroy such a massive living planet?

"Even if we can confirm that King Ghidorah is extremely wary of it, we still can't determine exactly what kind of monster it is. But with such size and spatial capabilities, it's clear this isn't something we can handle," Metphies said.

Haruo frowned. "If the enemy is so massive, what's the point of us humans? Just a few spaceships trying to deal with a super-planetary monster?"

One-hit kill?

"Don't joke. We don't have the technology for a planet-destroying cannon. If we did, we'd have used it on our planet's monster first."

As the enemy drew closer and new forms of energy were detected emanating from the planet, everyone's anxiety increased.

"We've never seen this kind of energy before!"

"Sure enough, it's not just one; other monsters might live on that planet!"

Metphies and Haruo understood at once.

This made sense; these relatively smaller monsters are the enemies their technological civilization must deal with.

But as the distance closed and they sent their ships out to make initial contact, everyone was shocked again.

Individuals flew out from the living planet and headed straight towards them.

Those figures were unmistakably...

"People?? How can that be? They're humans like us!!"

"Impossible, it must be a trick. Did you notice? They can fly through space with just their bodies, without space suits or devices!"

"Maybe it's low gravity? But at that altitude, they're exposed to outer space. How are they surviving in vacuum conditions with lots of radiation and no oxygen?"

Once again, everyone present was thrown into disarray.

Humanoid beings share certain traits, like needing oxygen and water to survive and lacking bodies strong enough to resist radiation.

Beings that can survive without oxygen or water and endure radiation are typically energy-manipulating monsters.

This scene was beyond everyone's understanding.

Especially when they saw these beings who looked so much like them just fly over.

The enemy was just casually entering the vacuum of space and heading their way!

A group of people flew out from the living planet and were able to travel across the universe with their flesh and blood. It's fucking outrageous. Are these really human beings?