(Note: The entire arc is Non-Canon as this is a fic from year ago or even before that. Treat this as AU.)
Rocks D. Xebec.
A man of madness, cruelty, and unrestrained destruction.
He never sought to rule the world—he wanted to end it.
And yet, for all his violence and chaos, there was still something in him that commanded respect.
He was a true king—one who had fallen into the deepest darkness but never lost his will.
That alone proved his greatness.
He was the captain of the Rocks Pirates, the Demon King of the Seas, the mightiest monster ever to live.
—
Crack! Boom!
The air trembled.
Rocks fought six enemies at once—yet not a flicker of fear crossed his eyes.
Their combined attacks struck his body, but his strange, elastic flesh absorbed every blow as though nothing could harm him.
"Fist of Punishment!"
"Divine Departure!"
Garp and Roger attacked in perfect harmony, one with his iron fists, the other with his sword coated in overwhelming Conqueror's Haki.
But Rocks only laughed.
"Ohohohoho!"
His body twisted, bending in unnatural ways, stretching like rubber as he evaded their attacks with a mocking grin.
"What the hell?!"
"Is that… a Devil Fruit?!"
Everyone froze in shock.
Until now, the world had believed Rocks D. Xebec was a man of raw, unaided power—someone who relied only on Haki and monstrous physical strength to crush his foes.
He had never once displayed a Devil Fruit ability.
And yet…
Now it was undeniable.
Rocks possessed a Devil Fruit.
"Giant's Fist!"
He leapt into the air—then his arm expanded, swelling to the size of a mountain.
BOOM!
The punch crashed down like divine wrath.
Even though his six opponents dodged, the shockwave alone made them vomit blood.
Bones cracked. The air itself screamed.
Then the unthinkable happened—
The island of God Valley began to split apart.
CRACK!
CRACK!
Fissures raced outward in every direction.
The earth roared as the entire island tore apart, breaking into four colossal fragments.
An entire island—shattered by a single punch.
---
Rocks bounced high into the sky, using his elastic body to propel himself like a living cannonball.
He looked down and sneered:
"Oi, oi! Six little brats—don't tell me that's all you've got!"
"You're making me bored! OHAHAHA!"
...
From where he stood, Arthur Pendragon noticed something the others missed.
Blood.
A thin trickle ran from Rocks' lips—quickly hidden by a burst of Haki.
But it was enough.
The truth was clear.
Rocks' body had reached its limit.
His life was slipping away.
---
"Oh…"
From afar, Shakky watched and muttered with intrigue,
"So it's the Paramecia-type Gum-Gum Fruit... Who would've thought Captain Rocks had a Devil Fruit? I've never heard such a thing before."
(Ps: Non-Canon.)
She glanced toward Edward and Shiki.
"Gurararara!"
Edward laughed, shaking his head.
"I never knew either. The captain didn't need any damn fruit—his strength alone was enough to crush anything that lived."
He smiled bitterly.
He had joined the Rocks Pirates as a teenager, fought beside that man for over twenty years, and challenged him countless times.
Yet every time, the result was the same—utter defeat.
Rocks had always been untouchable.
---
Arthur, watching silently, recognized the truth.
That fruit…
It was the very same fruit that fate would one day give to Monkey D. Luffy.
No wonder the World Government had CP9 personally escort it decades later.
He smiled faintly.
"So the fruit that once belonged to the Demon King… ends up in the hands of the man who'll inherit his will. And the Straw Hat from Roger, too… heh. What an interesting twist of destiny."
---
The battlefield was drenched in blood.
Hundreds of thousands had already perished—pirates, marines, and slaves alike.
Now, only the strongest still stood, waiting for the inevitable conclusion.
There would be no survivors between the titans.
Either Rocks would annihilate the world's champions…
Or he would fall, and the era of monsters would end.
"Gah—!"
Gaban spat blood and collapsed, unconscious—the first of the six to fall.
"Cough—cough!"
His body trembled violently. He couldn't move.
Even weakened, Rocks was still too strong.
"Rayleigh! Look out!"
Roger's warning came just in time.
The two barely blocked Rocks' strike.
"OHAHAHAHA!"
Rocks laughed.
"So, Roger Pirates… why side with the World Government, eh?"
Roger grinned.
"They paid too well to say no. And once I give my word… I see it through!"
Rocks sneered.
"Honor? Not bad! But since you've chosen this path, boy—prepare to die horribly!"
He lunged.
Blows fell like thunder.
Roger and Rayleigh staggered backward, bloodied but defiant.
At that moment, Sengoku, Garp, and Zephyr rushed in to assist.
They knew if Roger and Rayleigh fell, it would be over.
The five of them had only one chance—to strike together.
And they could feel it now.
Rocks' strength was fading, second by second.
His breath was ragged.
His heart—slowing.
But he refused to stop.
—
"HRAAA!!!"
Rocks' roar shook the world.
A torrent of power erupted from his body, shattering everything nearby.
The ground exploded. The sky itself seemed to crack.
Five figures were hurled into the walls like broken dolls.
When the dust cleared, Rocks stood in the center, laughing madly through blood.
"OHAHAHAHAHA!!"
"Listen up, you brats! You've all wanted to know… what lies at the peak of Conqueror's Haki, haven't you?"
"Then watch—"
"I'll show you!"
His aura surged.
Dark-purple lightning danced around him, splitting the earth.
Then, behind him—a colossal shadow took shape.
A horned demon king, roaring into the heavens.
"This—" Rocks bellowed, his voice shaking souls,
"—is the pinnacle of Conqueror's Haki!
When a man's will grows strong enough,
when his spirit alone can manifest into physical form… Then that, boys, is the true king's power!"
The warriors who faced him—all veterans hardened by death—felt their legs tremble.
It was impossible.
At their level, ordinary Conqueror's Haki could no longer affect them.
Yet here they were—shaking like children.
This was beyond Haki.
This was the incarnation of domination.
"Buddha Impact!"
"Black Arm: Rankyaku! (Tempest Kick)"
Rocks only roared,
"Get out of my sight!"
The demon behind him swung a colossal fist, blasting Sengoku and Zephyr away as if they were leaves in a storm.
Their eyes widened.
"Substantial damage?!"
"Impossible…!"
They had just witnessed a manifested attack made purely of Haki—a feat beyond imagination.
"Divine Departure!"
Roger and Garp charged once more.
They no longer cared about life or death—only victory.
Rocks laughed.
His cape tore in the wind.
He raised his fist—and the demon behind him mimicked the motion.
Then the world went silent.
Clang—
BOOM!!!
The final clash of legends.
When the light faded,
the demonic avatar vanished.
Rocks stood still—
a hole through his chest.
Garp's fist and Roger's blade had pierced him clean through.
The war was over.
...
A faint smile crossed Rocks D. Xebec's face.
The wind carried his torn captain's coat as he fell.
The Demon King of the Seas, who once sought to destroy the world...
Had reached the end of his path.
And the curtain fell on an era.
----------------------------///
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