One Piece: The user of the Nen-Nen Fruit, who overturned the sea.

"Thump! Thump! Thump! Thump!"

In the northwest corner of the battlefield, every dull, muffled impact felt like a giant hammer striking everyone's heart.

There were no dazzling fruit power lights there, no sweeping sword auras or flashing blades.

Only the most primal, savage, and awe-inspiring—physical collision!

Barrett and Zephyr, two men who had honed their physical skills and Haki to monstrous levels, chose the most direct way to fight each other.

"Black Wrist - Meteor Fall!"

Zefa roared, his massive body transforming into a jet-black meteorite.

It crashed down from mid-air with the force of Mount Tai, the Armament Haki gathered in his right fist as thick and heavy as an abyss.

Wherever the fist passed, the air was compressed into white shockwaves, emitting a piercing shriek!

This attack was enough to blast a naval vice admiral-class flagship into pieces!

"Come on, Zephyr!! White Tiger - Shattered Star!"

ground,

Barrett's white tiger orc form's muscles swelled to an almost terrifying degree, and his white hair stood on end like steel needles.

Instead of retreating, he advanced, his legs slightly bent, the ground beneath his feet suddenly cracked, and he soared into the sky like a spring compressed to its limit!

His right fist was pulled back, the muscles and veins on his arm coiling like a dragon, the same jet-black Armament Haki covering the fist's edge.

He met Zephyr's massive fist descending from the sky head-on without any fancy moves!

The moment their fists collided, time seemed to stand still for a split second.

Immediately afterwards—

boom!!!!!!!!!!

A deafening roar, far more terrifying than any previous collision, erupted!

That wasn't the clang of metal on metal, but the destructive sound of pure power and dominance crushing matter and shaking space!

Centered on the point where the two fists met, a visible, semi-transparent spherical shockwave suddenly expanded outwards, instantly spreading to a range of hundreds of meters!

Wherever the shockwave passed, the ground seemed to be ruthlessly plowed by an invisible giant plow, with rubble and soil shooting into the sky, only to be torn to shreds by the violent shockwave that followed!

"Hey, hey, feed me~ You're kidding, right!"

"That's Instructor Zephyr!"

Some of the weaker naval soldiers in the distance, even from a great distance,

He was also shaken by the aftershock of the pure force collision, causing his ears and nose to bleed and him to stagger and fall to the ground!

As the smoke and dust cleared, a giant crater with a diameter of over fifty meters and a depth of more than ten meters was seen at the spot where the two had exchanged blows!

Zefa remained in the downward-slamming posture, hovering above the crater, his right fist trembling slightly, the skin on his fist cracked and bleeding profusely.

Barrett, on the other hand, had half of his lower leg embedded in the broken rocks at the bottom of the pit.

But he tilted his head back, his face full of a ferocious and gleeful smile, his right fist also torn and bleeding.

"Hey! Old man Zefa! You're pretty strong! Much more energetic than back in the day!"

Barrett laughed wildly, then kicked his legs out of the hole, sending pebbles flying.

He twisted his neck, making a cracking sound. The wound on his fist was stopping bleeding and healing at a visible speed. Although it was slow, it was indeed recovering!

Zephyr's pupils contracted slightly. He clearly remembered that although Barrett was physically strong back then...

But there is absolutely no such abnormal recovery ability!

Moreover, the power of that punch just now exceeded his expectations!

"Don't get cocky, kid!"

Zephyr landed, shook his bloodied fist, and his dark Armament Haki once again covered it, forcibly suppressing his injuries.

"My iron fist is far more powerful than that! That was just an appetizer!"

"Just what I wanted!"

Barrett's eyes flashed with a fierce light.

"I haven't warmed up enough yet!"

come!

Let's see if your black wrists are harder, or my bones are harder!

Before the words were even finished, the two charged at each other again!

This time,

It was no longer a head-on punching match, but a dazzling close-quarters combat session!

As a former Navy Admiral, Zephyr's physical skills had already reached their peak, and he was also proficient in all the secrets of the Navy's Six Powers.

At this moment, he integrated the six styles into his own domineering qi technique, making his moves ever-changing, fierce and unparalleled yet revealing his experience and precision.

"Fingergun - Spotted!"

In an instant, Zephyr brought his right index and middle fingers together, creating countless afterimages. Each finger was imbued with a finger force capable of piercing steel, enveloping Barrett's vital points!

"Naval Six Styles? I can do that too!"

"Iron Block & Steel!"

Barrett growled, neither dodging nor avoiding, his muscles tensing to their limit, his skin gleaming with a metallic sheen, and Armament Haki evenly covering his body.

Zefa's finger gun rained down on him, making a dense "clanging" sound, like striking iron, but it could only leave shallow white spots on his skin, making it difficult to truly break through his defenses!

"Storm Kick - Kaito!"

Zefa's moves were incredibly fast; his finger pistol failed, and his right leg swept across like a battle axe.

A highly refined, azure-blue vacuum slash roared out, aiming for Barrett's waist!

"Moonwalk: Instant!"

Barrett's massive body displayed astonishing agility, his feet moving with moonwalk-like grace, his form blurring into nothingness.

He narrowly avoided the slash, while simultaneously unleashing his left fist like a cannonball towards Zephyr's face! "Beast King Fist!"

"Paper Painting: Martial Arts!"

Zefa's body swayed like a willow catkin in the wind, narrowly avoiding the punch.

At the same time, his right hand formed a blade, as black as ink, thrusting straight into Barrett's exposed ribs! "Hand Blade - Pierce!"

boom! boom! boom!

The two figures flashed, collided, separated, and then collided again at the edge of the huge crater!

The dull thuds of fists and feet clashing were like the beating of drums, shaking one's very soul.

Every encounter was fraught with danger, yet each was defused by the opponent's exquisite martial arts or formidable defense.

Zefa grew increasingly alarmed as the fight progressed.

Barrett's fighting style remains wild and domineering, but after bloodline optimization and the development of Mythical Zoan Devil Fruit, his speed, reaction, defense, and even combat intuition have been comprehensively improved!

In particular, his monstrous physique and regenerative abilities greatly reduced the effectiveness of many of Zephyr's moves that would normally be enough to severely injure or even kill his opponents.

and,

Barrett seems to be intentionally not using the Devil Fruit's power, relying purely on his physical body and Haki to fight against himself. This is more like a... test?

"Are you using me as a whetstone?!"

Zephyr roared, punching Barrett away, his face turning ashen.

"Haha! You figured it out?"

Barrett licked his lips, his eyes gleaming with even greater fighting spirit.

"Let's test the strength of my new body with you, this old whetstone!"

Don't worry, when you're done for, I'll naturally use my Devil Fruit power to send you on your way!

"Arrogant!"

Zephyr was enraged, and his domineering aura surged once more.

"Then let this old man see if your knife is hard enough!"

Black Arm - Ultimate Technique - Mountain Crash!

Zephyr crossed his arms in front of his chest, and the jet-black Armament Haki flowed and gathered like liquid, brewing a destructive wave.

This is one of the profound techniques he has mastered by combining his lifelong physical skills with his domineering cultivation. He concentrates all his power into a single point and unleashes it, enough to shatter mountains!

Seeing this, Barrett was not afraid at all.

Instead, it let out a low growl of excitement, and the phantom of the white tiger flashed past behind it.

His fists clenched, assuming a similar posture of gathering power, and his aura surged wildly.

The white animal markings seemed to come alive, swimming across the skin!

"Come on, Zephyr! Let's see who collapses first!"