One Piece: Starting with Sharingan, First Mate Uchiha

Boom!Boom!Boom!

A cheerful yet strange drumbeat echoed repeatedly over the ghost island.

White-haired Luffy floated in the night sky, with white ribbons like clouds and flames encircling his shoulders and arms.

Having just returned from the brink of death, his face showed no sign of weakness. Instead, he seemed to have completely shed all constraints, his body so light that he could be blown away by the night wind at any moment.

Luffy looked down at his white hand and tried to pull his cheek.

With a slight exertion of the fingers, his face was stretched several meters like rubber, and then snapped back to its original position with a "snap" when the grip was released.

"Hehehehe!"

Luffy clutched his stomach and burst into laughter.

He didn't know the true meaning of Devil Fruit awakening.

All he knew was that he was freer than ever before.

The body can take any shape it wants.

Even the surrounding air, clouds, and rocks beneath his feet seemed to be responding to his thoughts.

Kaido stood in the center of the shattered banquet hall, not launching an attack immediately.

His gaze was fixed intently on Luffy.

His white hair, the clouds and flames surrounding his body, and the smile that showed no nervousness even when facing the Four Emperors reminded Kaido of a legend buried deep in history.

However, he still couldn't be sure.

Is this young man before me the same Straw Hat Luffy from before, or has he transformed into some kind of being beyond the realm of reason?

Kaido gripped the Eight Blessings tightly and asked in a deep voice:

"Who exactly are you?"

Luffy paused for a moment, seemingly finding the question somewhat absurd.

He reached out and grabbed the straw hat that had been whipped up by the wind, put it back on his head, and then grinned, revealing his familiar smile.

"Monkey D. Luffy".

"He's going to be the Pirate King!"

Nothing has changed.

Kaido was silent for a moment, then suddenly grinned.

"interesting."

"Then let me see just how capable your new body really is!"

boom!

The ground beneath Kaido's feet suddenly exploded.

The enormous humanoid form instantly appeared in front of Luffy, the Eight Guardian Spirits wreathed in Conqueror's Haki, accompanied by thunder that tore through the air, smashed head-on into his head.

Luffy clearly saw the attack, but he didn't dodge it like he used to.

His body suddenly bent backward, his waist stretched out like a strip of cloth, and his head almost touched his heels.

Eighth Fasting Ritual brushed past Luffy's nose.

Before Kaido could retract his spiked club, Luffy used the force of his body's rebound to spring up and slam his head into Kaido's chin.

boom!

Kaido's massive body was thrown backward by the impact.

Luffy, however, spun around dozens of times in mid-air due to excessive force, and finally fell to the ground like a weightless piece of paper, his entire face slamming into the rock.

The next second, his head bulged out of the ground next to him again.

"Ouch! Hehehehe!"

Luffy pulled out his head, clutched his stomach, and laughed so hard he rolled on the ground.

Kaido's temple throbbed with veins.

This doesn't resemble a life-or-death battle between four emperors at all; it's more like a farce.

But that headbutt just now was clearly imbued with genuine Conqueror's Haki.

No matter how absurd it may appear, it cannot conceal the power it contains.

"Don't get too cocky!"

Kaido roared and swung the Eight Precepts once more.

This time, Luffy simply reached out and pressed his hand against the ground.

The hard rock formations of Ghost Island rippled like cloth thrown into water, then he pulled them up with force, transforming them into a huge rubber barrier.

boom--!

The eight fasting rituals slammed heavily onto the rubber surface.

The rock formations that Kaido had anticipated did not collapse; instead, the power from his spiked club was quickly absorbed by the soft ground.

The entire rock layer caved in to its limit, then suddenly rebounded in the next moment.

Caught off guard, Kaido was forced to stagger back several steps by the force of his own attack.

Luffy's eyes lit up as he looked at the undulating ground.

"I never knew it could be done like that!"

He excitedly grabbed the rock strata and kept pulling, and the entire dome quickly turned into a rubber battlefield that rolled up and down.

Just as Kaido was about to smash the ground and charge, the rocks beneath his feet suddenly caved in, causing him to lose his balance.

Once he managed to regain his balance, the ground on the other side bounced up high, sending him directly into the air.

Using the ground's elasticity, Luffy leaped into the air, his right arm spinning continuously in the air, and his fist, wrapped in Conqueror's Haki, slammed towards Kaido's face.

Kaido raised the Eight Precepts to block.

Luffy's arm, however, wrapped around the spiked club several times like a rope around a pillar, and his fist landed on Kaido's face from another angle.

boom!

Kaido's cheeks were sunken inwards, and the outline of his fist bulged out from the back of his head.

His eyes widened instantly, and his tongue stretched out under the impact, making his whole face look extremely comical.

Kaido clearly sensed that the dragon scales and Haki defenses still suffered real damage.

Luffy withdrew his fist, and Kaido's head quickly returned to its original state.

Blood slowly trickled from the corner of his mouth.

Kaido raised his hand to wipe away the blood, and the surprise in his eyes gradually turned into solemnity.

This ability is influencing everything around it.

Not only the ground, but even enemies hit by Luffy will briefly possess rubber-like properties.

"Devil Fruit awakening...?"

Kaido muttered to himself, then his body rapidly expanded, transforming back into a blue dragon and soaring into the clouds.

The enormous dragon's body stirred up the dark clouds, and gales, thunder, and flames gathered in the night sky.

"Heat Breath!"

A pillar of blazing white fire erupted from the dragon's mouth, almost completely covering the dome of the ghost island.

Luffy did not dodge.

He grabbed the rubber rock layer beneath his feet with both hands and lifted it upwards with force.

Large swathes of ground were stretched into a barrier hundreds of meters high, blocking the heatwave from view.

Flames slammed into the rubber barrier, the powerful impact causing Luffy's feet to slide backward and his cheeks to turn bright red from the intense heat.

"Go back!"

Luffy laughed loudly and suddenly shook his arms.

The force absorbed by the rubber barrier suddenly rebounded, and the heat was forcibly changed direction, transforming into a blazing white beam of light that shot back into the sky.

Kaido twisted his dragon body to avoid the attack, and the pillar of fire grazed his scales, completely incinerating a large area of ​​clouds.

The Azure Dragon coiled in the night sky, its solemn expression growing ever more pronounced.

Many years ago, Jhin had mentioned Joy Boy to him.

The young man from the Lunaria tribe always believed that Joy Boy would one day come to this sea, defeat Kaido, and change the whole world.

Kaido never believed in such legends.

In his view, the so-called savior is nothing more than a fantasy fabricated by the weak in despair.

Freedom doesn't fall from the sky, and the world won't change because of one person's laughter.

Only war, strength, and the victor who survives to the end can truly determine everything.

But the white figure before them was fighting in a way that was completely out of place in this cruel world.

He felt no fear, no hatred, and not even the heaviness one would expect when facing a deadly enemy.

It was as if all rules had lost their meaning in front of him.

As Luffy stepped on the undulating ground, he saw the blue dragon in the sky and suddenly opened his arms.

His body began to swell rapidly.

Its legs, arms, and torso continued to grow larger, and in just a few breaths, it transformed into a white giant even larger than Kaido's Azure Dragon form.

"Why did you go up to the sky again!"

Giant Luffy leaped up and grabbed the Azure Dragon's body with both hands.

Kaido roared and twisted his dragon body, but Luffy lifted him high as if he were holding a long rope.

"Get down!"

Luffy swung his arms, continuously whipping the thousands-of-meters-long blue dragon through the air.

The azure dragon's body crashed through the clouds and was then slammed heavily onto the dome of the ghost island.

Boom—!

The entire ghost island shook violently once again.

Even the fully-formed Susanoo that was supporting the island sank slightly under the impact. Viktor's forehead veins bulged, and he almost couldn't help but look up and curse.

On the battlefields of each level of Ghost Island, countless people simultaneously looked up at the sky.

Usopp stared at the white giant, which was even larger than the buildings on Onigashima, his mouth agape as if he could swallow a cannonball.

"Th-that's Luffy?!"

Zoro leaned against the wall, and after hearing Luffy's familiar laughter, he finally closed his eyes and leaned back.

Sanji exhaled smoke, a slight smile playing on his lips.

They didn't know why Luffy had become like this.

But they were certain of one thing.

Their captain has returned.

……

Luffy slammed Kaido into the dome, then returned to his normal size and fell from the sky.

But the moment his feet touched the ground, his body suddenly shrank.

His white hair quickly faded, his face became covered in wrinkles, and he looked as if he had aged decades in an instant, lying on the ground panting heavily.

"Huff... huff..."

Luffy felt the seemingly endless power rapidly leaving his body.

While the fifth gear granted him near-limitless freedom, it did not come without a price.

Every change in the body and its surroundings consumes energy at an alarming rate.

The ruins exploded with a deafening roar.

Kaido rose again from the rubble, his blue scales shattered in large areas, and his forehead and mouth covered in blood.

He didn't take the opportunity to kill Luffy, but instead looked down at the figure that had aged so much that it could barely stand.

"This power is draining your life."

"How much longer can you hold on?"

Luffy lay on the ground, his heartbeat gradually returning to normal.

He hasn't defeated Kaido yet.

Now is not the time to give up.

Luffy raised his hand and pounded his chest.

"Jump up again..."

"My heart!"

There was initially no response.

Luffy patted his chest again, trying to find that light and free rhythm from before.

thump.

A faint heartbeat was heard.

Immediately afterwards, the second and third sounds quickly joined together.

Thump! Thump! Thump-thump-thump!

Luffy's emaciated body quickly recovered, his hair turned white again, and his cloud-like sash once more wrapped around his shoulders.

He leaped up from the ground, rolled several times in the air, and landed steadily in front of Kaido.

"I haven't had enough fun yet!"

Kaido's expression finally changed as he watched Luffy deliberately restart his heartbeat.

Many years ago, he once said something to Jin.

Kaido was still young at that time.

He once believed that with his own strength, he could overthrow the Celestial Dragons' rule, start a war that would sweep the world, and even become the one who would change the times.

The destruction of the Rocks Pirates, the death of Oden, and the endless battles in the New World gradually made him lose faith in the so-called liberation.

He only believes in the winner.

And now, the person who might truly defeat him is standing right in front of him.

Kaido showed no fear; instead, he revealed an even more joyful smile than before.

"I see."

He whispered:

"Jin, the one you've been waiting for has finally appeared."

Kaido reverted to his human-beast form, and the Eighth Guardian landed heavily on the ground.

"However, even if you really are Joy Boy, it doesn't mean you've already won."

"Legend has it that you can't defeat an enemy, and laughter can't automatically liberate a country."

"If you want Wano Country to be free, you'll have to use your own fists to overcome me!"

Black and red Conqueror's Haki erupted from Kaido's body.

"If you fall here, then Joy Boy is nothing more than another loser!"

Luffy patted his chest, and the Liberation Drum and Conqueror's Haki erupted simultaneously.

He didn't pay any attention to the name Kaido mentioned.

"I already said, I don't know who Joy Boy is."

"I'm just Luffy!"

Luffy grinned and pointed at Kaido.

"And I'll definitely send you flying!"

The three forces collided violently above the dome.

The Drum of Liberation, Conqueror's Haki, and Kaido's aura rose simultaneously, and the sky, which had just closed up, split open again from the center.

Kaido suddenly charged out.

"Roaring Eight Trigrams!"

Luffy's body spun rapidly, transforming into a giant white spinning top, with his Conqueror's Haki-clad arms wrapped around him to block the way.

boom!

The Eight Precepts blasted Luffy into the sky.

He tumbled through the air, but when he saw a bolt of lightning falling, he suddenly reached out his hand.

The originally invisible lightning was held in Luffy's palm like a physical rope.

"Gotcha!"

Luffy laughed as he caught the lightning bolt, swinging through the air in a huge arc before rushing back to the battlefield.

For the first time, Kaido was momentarily stunned by this illogical scene.

Luffy has already thrown the lightning bolt in his hand.

Kaido dodged to the side, and lightning swept past him, piercing through the dome of Onigashima.

The next instant, the two figures collided in mid-air once again.

The white figure stretched, bounced, and deformed continuously, while the cyan dragon body stirred up storms, flames, and thunder.

In the City of Flowers, the people who were releasing sky lanterns gradually noticed the strange phenomenon in the distance.

They saw a giant blue dragon coiling among the clouds, and a white figure laughing loudly amidst the thunder.

Nobody knows what's happening there.

But many people stopped in their tracks at that moment and looked up at the sky.

After dozens of clashes, Luffy and Kaido landed back on the dome of Onigashima.

Both of them understood that this battle could not be delayed any longer.

Oni Island is very close to the Flower Capital.

Kaido transformed back into a blue dragon.

Blazing flames rose from between the scales, quickly engulfing the massive dragon's body.

From a distance, he appeared to be a giant fire dragon capable of burning the entire island.

Luffy looked up at Kaido, his smile gradually fading.

He stretched his right fist towards the sky.

The white arm pierced through the clouds, growing larger and larger until it transformed into a giant fist large enough to cover the entire ghost island.