One Piece: SSS-Rank Haki at Age Seventeen

"One against many, huh?!"

Luffy's Observation Haki swept across the entire battlefield, his eyes shining brighter and brighter.

"Then let me see…"

"Where my limit really lies!"

ZZZT—!!

Silver lightning raced through the sky, forming a massive vortex that instantly covered nearly 1,000 square kilometers of Marineford.

"Well now… it seems I'll have to get a little serious too."

"Otherwise I might actually be underestimated…"

A teasing voice suddenly echoed.

Countless golden photons gathered together, forming a human silhouette.

Admiral Kizaru appeared, gripping the Ama no Murakumo Sword in both hands as he slashed down without hesitation.

CLANG!!

Luffy raised his right arm.

Silver Armament Haki wrapped around it like majestic armor, firmly blocking the blade of light.

Sparks scattered.

The light sword that could normally cut through steel and stone—

Couldn't even break Luffy's skin.

"Oh?"

Kizaru's expression turned rather interesting.

He instantly dissolved into golden light and vanished.

When he reappeared—

He was already ten thousand meters away.

But—

Luffy was faster.

A kick wrapped in Conqueror's Haki lightning slammed into Kizaru's elbow.

CRACK!

The sound of bone fracturing rang out.

Kizaru was sent flying instantly, skimming across the ocean before crashing heavily into ruins.

Whitebeard vs Akainu

"Great Eruption: Hound Blaze!!"

"Seaquake!!"

A crimson magma fist and a white shockwave fist collided in midair.

Violent airwaves erupted.

Both men were gravely injured—

Yet the pressure they emitted was utterly terrifying.

Suddenly—

Brilliant ice crystals spiraled up from Whitebeard's feet, rapidly freezing his body.

He was about to become a statue of ice.

"Gurarara…"

Whitebeard laughed loudly even as the freezing cold spread through his body.

"So this is the power of your fruit, huh?"

"Very strong indeed…"

"But remember this—"

"Overwhelming Haki is the natural enemy of all Devil Fruits!!"

Black-red lightning exploded from his body.

The surrounding space twisted under the pressure.

The advancing ice suddenly slowed—

Then shattered.

CRACK—CRACK—CRACK!

Visible fractures spread through the ice before it exploded apart.

Aokiji forced himself to stand despite his injuries.

"Ara ara…"

"As expected of the World's Strongest Man."

"Even in old age, your power hasn't faded."

"Heh. Just the remnant of a bygone era."

Akainu's face darkened.

Half of his body had already turned into molten magma.

Black smoke billowed upward.

"Gurarara…"

"And it's not your place, you candle-wick brat—"

Whitebeard gripped his bisento, vibrations raging across its blade.

"To lecture me!!"

He swung downward.

"Great Eruption: Crimson Hound!!"

"Quake Blade!!"

Red and white power collided violently.

The shockwave exploded outward.

Both men groaned as they slid backward dozens of meters.

But the moment they regained their footing—

They charged again like beasts.

Whitebeard fought with the resolve to die here.

Akainu fought with the madness of a rabid hound.

Devil Fruit power.

Haki.

Raw physical strength.

Everything was unleashed without restraint—

Just to kill the other.

This was the most primitive form of battle.

Deep Within Marineford

BOOM!!

The gigantic Skeletal Warhorse Demon crashed violently into the ground, rolling across the battlefield and sending snow and dust everywhere.

Saint Saturn's eyelids twitched as countless venom blobs sprayed outward.

Meanwhile, Warcury's body slowly regenerated.

The four massive monsters attacked Luffy again.

"What a pain."

"You old fossils have nothing impressive besides that immortality."

Luffy frowned.

His Conqueror's Haki couldn't completely break the Five Elders' immortality—

At least not with small bursts.

But it could greatly suppress their regeneration.

Injuries that should heal within seconds were now taking minutes.

"Oh really?"

"You think you're the only ones who can grow bigger?"

Countless strands of silver lightning wrapped around Luffy.

Before the stunned eyes of the Five Elders—

The white glow around him expanded rapidly.

The tiny figure they had viewed as an insect—

Suddenly swelled like a rising mountain.

5 meters.

10 meters.

30 meters.

50 meters.

80 meters.

100 meters!!!

Luffy transformed into a hundred-meter giant.

The towering bodies of the Five Elders now only reached his waist.

Then—

In their horrified gaze—

Luffy reached out.

His giant hands grabbed the Sandworm.

He seized its jaws—

And ripped them apart.

RIIIIIP!!

Yellow-green slime sprayed everywhere.

The Sandworm was torn clean in half.

The earth-shaking footsteps and terrifying destruction immediately drew everyone's attention.

Boa Hancock, staring at Luffy.

The trembling Marines and pirates aboard ships.

Dracule Mihawk, the world's greatest swordsman, watching like a hawk.

Even Sengoku and Whitebeard, locked in battle—

All turned their heads.

Their eyes widened in shock.

"Oho… that's really… quite troublesome."

Kizaru lay in the rubble, his bloodstained sleeve covering his eyes.

"What… is that…?"

"A giant?!"

Both Marines and pirates gasped.

Sengoku stared at the towering figure with a grave expression.

"So it's true…"

"The legendary Warrior of Liberation…"

Sun God Nika.

Not far away—

Bartholomew Kuma stared blankly at Luffy's gigantic form.

His heart trembled violently.

The lifelong faith of the Buccaneer race—

Had appeared before him.

That figure—

So powerful.

Bringing laughter.

Bringing dawn.

The Five Elders' Desperation

"We must kill him immediately…"

"Otherwise, Lord Imu will—"

After a brief hesitation—

Warcury charged forward, his massive body leaping high into the air.

Luffy smirked.

He hurled the torn halves of the Sandworm down onto the ground.

BOOM!!

The earth within a kilometer collapsed into a massive crater.

Cracks spread everywhere.

Then—

CRACK!

Luffy clenched his fist.

Silver lightning surged wildly.

He threw a punch.

Space itself shattered like broken glass, releasing violent dimensional force.

BOOM!!

Warcury was blasted away instantly.

His enormous boar body became a bloody mess.

"How is he this strong?!"

"He shattered space with pure strength?!"

Three monstrous figures surrounded Luffy cautiously.

Fear appeared in their eyes.

Meanwhile—

The Sandworm slowly began regenerating.

But the process was painfully slow.

Saturn's abdomen wriggled grotesquely.

Hundreds of massive purple venom spheres erupted toward Luffy.

Luffy didn't even glance at them.

His Armament Haki emission blocked the poison.

Purple smoke rose.

Itsumade flapped its wings and unleashed a towering column of fire.

Luffy casually punched—

The shockwave obliterated the monstrous bird.

Then—

The Skeletal Warhorse Demon appeared behind him in a swirl of freezing wind.

Luffy swung his elbow backward.

Like a missile exploding midair—

The skeleton's ribs shattered under the overwhelming force.

"Too weak!!"

Silver lightning raged into a massive storm.

The Five Elders were tossed around like toys.

Yet their immortal bodies kept them barely alive—

Which made them extremely annoying.

PS: I've been releasing chapters daily . Honestly, it hurts seeing almost no support on Patreon after all that work.If you're enjoying the fic, even a little, supporting me would mean a lot. It helps a student stay independent .

complete fic (all chapters ) are already up on Patreon → /Chakraflow789

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