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On the massive screen, war blazed like a meteor storm.
The footage moved so fast it was dizzying, yet every frame burned itself into memory. The Hero Association's elites were locked in brutal, flesh-tearing combat with alien lifeforms pouring out of a colossal battleship from beyond the stars.
Then the truth struck like an ice spike through the heart.
Earth's defenders were losing. Badly.
They were being crushed.
BOOM!!!
A detonation louder than thunder ripped through the footage. The fast-forwarded image shattered as if smashed by a titanic hammer. The alien warship's massive hatch, unable to withstand the recoil, exploded into fragments that scattered across the void.
A suffocating pressure swept across countless worlds. Every viewer, across time and space, felt it.
The camera rose slowly, solemnly, almost reverently.
Up.
Up.
Until it stopped before a throne deep within the ship.
Seated upon it was a one-eyed being clad in heavy armor, long violet-pink hair cascading behind him. Hellish pressure rolled off him in waves.
Just seeing his projection was enough to make warriors across worlds tremble to their bones.
He was the scourge of galaxies.
The conqueror of stars.
The Supreme Overlord of the Universe—
Boros.
Too strong.
That was the only thought in the minds of those who stared at him. Especially the people of the world of One Punch Man. For them, it felt like fate itself was being crushed under his heel.
Inside the vast hall, as wide as a space station, Boros's enormous eye studied the plain, bald man standing opposite him.
"So you're this planet's champion? That unfathomable energy… Could it be you're the one from the prophecy?"
Arms folded, strange glowing patterns shimmered across his blue skin.
"You broke through my subordinates and reached me so quickly. Impressive."
"Welcome… to my ship."
Before the words even finished echoing, he vanished in a flash and reappeared near his opponent, claiming absolute control of the battlefield.
The bald man's white cape fluttered lightly behind him.
"You're the leader of this invasion?" he asked calmly, voice flat as ever.
At that painfully ordinary tone, Boros's lips curled into something savage.
"Excellent! Before battle, we exchange names. That is the etiquette of the strong."
His voice boomed through the chamber.
"I command the Dark Matter Thieves!"
"My name—Boros! Overlord of the Universe!"
The sheer presence radiating from Boros clashed violently with the sight of the smooth, unremarkable bald head across from him.
"My hobby is… no, my job is hero."
"Saitama."
Other Worlds React The Pirate World
In the world of One Piece, laughter rang out.
"HAHAHA! Did you hear that? He's a pirate too!" Monkey D. Luffy bounced in excitement, eyes shining. "A space pirate!"
"So space… is like a bigger sea than the Grand Line?" he wondered.
"It doesn't look like a sea at all!" Usopp shrank back, staring at the overwhelming pressure on screen, voice trembling.
At Marine Headquarters, even legends felt the weight.
Another monster capable of overturning the world.
The Dragon Ball Universe
In the world of Dragon Ball Z, someone else wore the title of tyrant among the stars.
Frieza reclined in his hover chair, sneering.
"Overlord of the Universe? With that level of power?"
"How ridiculous."
To lesser civilizations, Boros's aura was terrifying. But to Frieza, he wasn't even on his level. Perhaps stronger than the Ginyu Force. But far from the realm of an emperor.
Boros's Story
Back on screen, Boros spoke of his endless loneliness.
"Years ago, I conquered every strong opponent in space. No one dared challenge me."
"I was consumed by boredom. Then a prophet told me—on a distant planet, there exists one who can give me a worthy battle."
"Twenty years. Across countless light-years. I finally arrived."
His muscles began to swell, excitement leaking into his voice.
"My men thought the prophecy was an excuse to avoid war. But now… facing you… I know it was real."
His eye gleamed with feral anticipation.
"You were worth crossing the universe for."
"You will give me true entertainment!"
Back on Earth, ordinary people nearly fainted.
"Invincible across the universe?"
That was beyond imagination.
Even the proud Tatsumaki could only stare, stunned.
If she reacted like that, the lower-rank heroes fared worse. Some lost all will to fight. Some wanted to run home.
The Punch
Then—
Boros froze.
Because in that instant, Saitama had already thrown his fist.
The air split apart.
A shockwave beyond comprehension detonated against Boros's chest.
BOOM!!!
Before anyone could process what happened, Boros's massive body shot backward like a cannonball. He smashed into a central support pillar.
Dust and debris erupted.
The alien alloy column dented inward with a horrifying crater.
Silence.
"…That's it? One punch?"
"He had such an entrance!"
"Was he all talk?"
Across countless worlds, those who had been terrified rushed to mock him, eager to erase their earlier fear.
Even within the Hero Association, tension evaporated.
"So much for that," someone scoffed.
But among the S-Class, Bang frowned thoughtfully.
And Genos knew better.
It wasn't that Boros was weak.
It was that his teacher… was absurd.
Even Saitama himself blinked.
"He took it?"
His eyes lit up for the first time.
"Now this is interesting."
Other Worlds Feel the Shock
In the world of Fate/stay night, Gilgamesh dropped his wine glass without noticing, staring at the screen.
In the world of Demon Slayer: Kimetsu no Yaiba, Muzan Kibutsuji had nearly burst a heart just from witnessing the afterimage of that punch.
Even ancient giants in other universes shrank back instinctively.
They all understood something the One Punch world had missed.
That punch wasn't ordinary.
It carried destructive force on a different dimension entirely.
Boros Unleashed
On screen, Saitama spoke casually, almost like he was lecturing someone.
"You're stupid."
"You invade another planet just to cure boredom?"
"Even a regular office worker wouldn't come up with something that dumb."
His cape fluttered lightly.
The contrast between his almost goofy appearance and the carnage around him was chilling.
Then Boros climbed out of the crater.
His heavy golden armor shattered and fell away like crumbling sandcastles.
"This armor was sealing my overwhelming power," he said, voice buzzing with metallic excitement.
"It just broke."
Saitama's expression shifted.
"Oh?"
Boros crossed his arms. The glowing patterns on his skin erupted in blinding light. Muscles swelled violently, energy surging outward like a volcanic eruption.
"AAAAAAHHHHHH!!!"
Lightning exploded around him.
His long hair shot upward, blazing like a burning crown.
Endless destructive energy surged toward the ceiling. The entire warship trembled like a tiny boat in a storm, on the verge of breaking apart.
The Ninja World Reacts
In the world of Naruto, the Nine-Tails inside Naruto Uzumaki bristled like a furious beast, sensing the overwhelming power.
Chakra roared like a tidal wave.
Outside, crimson energy flared around Naruto's body.
The universe's overlord had finally removed his limiter.
And the real fight… was about to begin.
"....."