One Piece: The Strongest Trait System

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FWOOSH!

Wrapped in a terrifying wind pressure, the Merry shot into the airspace of Thriller Bark.

"Why are we landing like this??" Nami shrieked, clinging to Rowen who stood at the front of the deck. The Merry, propelled by its Thunder-Burst, had hurtled through the sky and now made its dramatic entrance onto Thriller Bark—

"Shishishi! This is how our pirate crew should make an entrance!" Luffy cheered excitedly, grinning broadly.

"Hmph. An Emperor-level crew can't just make a boring landing, can they?" Zoro and Sanji also grinned.

"My skin is going to get blown off... Ah, though I have no skin, only a pile of bones! Yohohoho!"

Brook clung to the Merry's mast, his afro whipping wildly in the wind. This novel experience thrilled Brook immensely—It had been years since he'd had an adventure with comrades like this.

Rowen, the instigator of it all, looked down at the gloomy environment of Thriller Bark below, a smile playing on his lips.

VMM! BOOOOM!

Crimson-black lightning instantly roared out from Rowen's eyes, materializing in the atmosphere!

The moment this violent, tyrannical crimson-black lightning appeared, the entirety of Thriller Bark began to tremble faintly.

The dark clouds perpetually blanketing the Florian Triangle roiled violently, trembling before the power only a true King could possess—the full might of Haōshoku Coating!

VMM!

The raging crimson-black lightning coiled around Rowen's right fist, forming a thin cloud of Haōshoku Coating!

WHOOSH!

Rowen leaped from the deck of the now-slowing Merry, appearing high above Thriller Bark.

Countless arcs of crimson-black lightning enveloped his body.

"GALAXY IMPACT——!!!" Rowen roared with powerful laughter, his coated fist slamming downwards!

VMM!

BOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOM!

Terrifying Haōshoku energy erupted from the air itself, blasting the very center of Thriller Bark. A horrifying shockwave of crimson-black Haki lightning tore through the heart of the massive ship-island!

This shockwave was pure, violent Haōshoku Coating energy—infused with a portion of Rowen's physical energy and his newfound Martial arts prowess!

Yes—

This technique was inspired by Hero Garp's signature attack, the Galaxy Impact!

That devastating move from the original story that obliterated numerous buildings and pirates on Hachinosu Island with a single punch!

And Rowen, using his Asura Aura and the power of Hakoku Sovereignty, could now manifest his physical energy, infusing it into this very attack!

Furthermore, he was beginning to display the power of True Martial arts!

After his battles with Aokiji and Akainu, Rowen truly understood the power of Martial arts and had since begun training.

His training method was simple, as shown in the original story:

Pummeling discarded steel warships with his bare fists, without using Haki or Devil Fruit powers—

—Water 7 had plenty of scrap steel ships.

Rowen used his Smoke-Smoke and Munch-Munch abilities to easily carry these massive ships for his training. He could even use the Munch-Munch ability to fuse various hard materials with steel, creating even stronger training materials.

This training was similar to a swordsman's—every punch was like a sword swing. Even when Zoro became a Great Swordsman—his basic training still involved endless repetitions of fundamental sword motions with heavy weights.

Fundamentals were key to mastering powerful Martial arts.

And simply punching steel, unless you were a natural-born monster like Big Mom, would injure even an Apex Gold physique.

When his physique reached Pale Gold, Rowen understood that at the Gold tier, the amount of physical energy contained within was the key determinant of its rank.

Humans were carbon-based; punching steel with enough force to shatter it would also cause terrifying damage to oneself.

And this 'Damage' was the point of training 'Iron Fist'.

The skin, muscles, even bones of the fist would be severely damaged, even fractured. The body's natural repair mechanisms would then kick in—After recovery, the fists would become stronger!

Repeating this process over and over, continuously tempering the fists, until they reached the state of Iron Fist—

—This process was like a smith forging a Famous Blade! For a Martial arts master, their fists were like a Famous Blade to a swordsman!

Garp's 'Iron Fists' had undoubtedly reached a level equivalent to a Supreme Grade Sword, granting him a terrifying boost in combat power.

Rowen's previous fighting style, though using fists, was only using them as a medium. At his level, they offered no combat enhancement.

He fought purely with energy attacks—combining Haki and Devil Fruit abilities and simply blasting his enemies. Such a method was very wasteful in terms of energy.

After his fight with Aokiji, Rowen hadn't felt the urgency. But after his life-or-death struggle with Akainu—Rowen had a profound awakening.

He absolutely could not underestimate the true top-tier powerhouses of this sea, those forged through countless life-or-death battles!

He had to begin training in Martial arts—

For a combatant of Rowen's level—to start training Iron Fist from scratch should have been impossible. An Awakened Zoan's physique was already enhanced by their Devil Fruit.

Punching steel with that enhanced skin, muscle, and bone would be like using a Devil Fruit ability, not meeting the conditions for true Iron Fist training.

But Rowen's Devil Fruit abilities—existed as Traits. Rowen could directly detach all his Devil Fruit Traits from his body.

In this state, Rowen's body was devoid of any Haki or Devil Fruit power—he could use his pure, physical fists to pummel steel ships, training a pair of Iron Fists.

After training until his fists were battered and broken, even the bones fractured—only then would Rowen begin to recover. And his recovery method was a complete BUG—he could simply re-equip his Devil Fruit abilities!

As an Awakened Zoan user, his regenerative capabilities were terrifyingly powerful.

Re-transforming into an Ultimate Human, his shattered fists, under the effect of the Human-Human Fruit and Superhuman Demonic Physique (Apex Gold) Trait, would rapidly heal—and become even stronger!

This BUG-like method—only Rowen on these seas could achieve it!

Using his pure fists for tempering, yet enjoying the terrifying regenerative power of an Awakened Zoan!

Combined with his Superhuman Demonic Physique Trait, which allowed recovery and strengthening even from completely shattered bones.

Rowen's training efficiency reached an astonishing level—

And with each punch, Rowen's control over energy deepened!

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And at this moment—it was time for Rowen to display his Martial arts!

BOOOOOOOOOOOOOOOOOOOOOM!!!

A terrifying energy shockwave instantly erupted!

The violent, tyrannical energy instantly shredded the countless plants on Thriller Bark.

Thriller Bark was a special ship, the world's largest pirate ship, practically a small island with large patches of land—

—And this land, under the violent energy shockwave, instantly fractured... Countless terrifying fissures appeared across Thriller Bark.

The numerous zombies hidden within the earth stared in terror at the approaching energy shockwave, then were utterly annihilated, reduced to ash under this Ridiculous power.

BOOOOOM!

CRACK!

Even the world's largest pirate ship couldn't withstand a single blow from Rowen's current power.

WHOOSH! BOOM! CRACK!

Thriller Bark broke into countless fragments.

The shockwave also slammed into the gloomy castle at its center. A horrifying fissure spread from beneath the castle; the entire structure began to tremble violently, cracks appearing everywhere!

The vibration caused Moria, who could no longer control his own strength, to fall flat on his backside, staring in horror at the scene before him.

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"No Devil Fruit power... Pure Haōshoku Coating and Martial arts..." Kuma's voice also held a violent tremor.

The World's Strongest Devil Fruit user... without using any Devil Fruit abilities—still possessed this fearsome combat power.

And this attack... though not yet at the same level—already possessed the nascent Form of Hero Garp's Iron Fist!

Before this, Marine HQ and the World Government's assessment of Sky Sovereign Rowen was of a Super-powerhouse of Haki and Devil Fruits—whose Martial arts skill was near zero.

But now... he was even beginning to display the power of Martial arts...

Was this scary man beginning to evolve again??

THUD!

Rowen landed on a fragment of Thriller Bark, clenching his fists, producing a sound like popping beans.

"HAHAHAHA! My martial arts training still has a long way to go," Rowen declared with a powerful laugh.

"A-Are you kidding me???" Moria sweated profusely.

One blow... and his Thriller Bark was completely destroyed. And he still felt his power wasn't strong enough???

At this moment, Moria's eyes began to fill with terror.

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WHOOSH!

The flying Merry now landed on the sea, amidst the fragmented pieces of Thriller Bark.

"M-Mr. Rowen... so strong."

"Is this the strength of a top-tier powerhouse?" Brook was completely stunned, almost in a daze.

What kind of power was this??

Brook, whose crew perished in the Florian Triangle, had never witnessed combat strength of this caliber...

"The Head of a Warlord!"

Luffy, Zoro, Sanji, and Vivi now all cracked their knuckles, looking towards Moria in the gloomy castle.

"Moria-sama! What happened??" Just then, Moria's three main subordinates—the Surgeon Hogback, the Hollow-Hollow Fruit user Perona, and the Clear-Clear Fruit user Absalom—all rushed frantically to Moria's side.

"You're—Tyrant Kuma, one of the Seven Warlords?" Perona shrieked upon seeing Kuma, immediately hiding behind Moria.

But Perona quickly noticed something was wrong with Moria's mood.

'Moria-sama afraid??'

"Moria-sama?" Perona blinked her doll-like eyes, feeling flustered.

"Wh-What happened?? A shockwave came from the sky, and the entire ship was destroyed!" Absalom sweated profusely.

"My zombie army... suffered countless casualties, Moria-sama!" Hogback was also incredibly panicked.

Then, their gazes, following Moria's, fell upon the figure standing on a fragment of Thriller Bark.

"D-Did he do that?" The three subordinates broke out in cold sweat.

"Moria. Kuma. Two Warlords gathered here," Rowen commented with a smile.

Rowen had sensed Kuma's presence long ago. He had also used his Devil Fruit ability to warn Kuma—trying to use the Paw-Paw Fruit to escape before him was impossible.

"Moria. Your pirate career—ends here," Rowen stated calmly.

"MY PIRATE CAREER ENDS??" Moria's eyes instantly turned bloodshot.

"Brick Bat——!" A spear-like shadow rapidly extended, shooting towards Rowen.

But Rowen didn't even move...

CLANG!

The Shadow-spear instantly shattered.

"How could we let you directly attack our King?" Zoro grinned fiercely.

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