One Piece : Rise of Thunder King

You can read the advance chapters here : patreon.com/Vigilante04

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In a room filled with a large table, a dozen Den Den Mushi were set out, and one of them, marked with the Marine logo, began to ring incessantly.

Click~ 

The microphone of the Den Den Mushi floated into the air.

"Hello? King Arthur, this is Sengoku! I need your help with an urgent matter!" Sengoku's voice came through clearly.

"Yes, I understand. This is related to you as well. Kaido is hesitant to return to the first half of the Grand Line due to potential attacks from the rear. To lure you out, he has attacked the G-5 branch, which is under Major General Jessica's command."

"The situation is critical! Admiral Kizaru is en route, but we've just received intel that Big Mom is also heading to the G-5 branch! The two of them… they're coming for you!"

"Hello? King Arthur? Can you hear me? Are you there?" Sengoku's voice trailed off as he realized there was no response.

Arthur had harnessed electromagnetic force to simulate his voice and communicate via radio waves while walking toward the room.

Standing firm, Arthur's eyes widened with fury, his killing intent palpable enough to shake and crack the ground beneath him. 

"Damn them! How dare those two idiots!" 

With a crackle of electricity, Arthur vanished.

High above the Isle of Gods, he reappeared on a flowing cloud, quickly retrieving five weather orbs from his satchel.

Huh~

With his wings unfurled and crackling with electricity, Arthur declared, "Two hundred million volts, fast!"

Buzzing~

A formidable electromagnetic force field took shape in the air, visibly morphing from a spherical form into a cylindrical electromagnetic field with a diameter of three meters and a length exceeding ten kilometers.

Hum~

A colossal hum resonated, as if the sky itself was tearing apart. An orange-yellow beam of high-temperature light burst forth, stretching hundreds of kilometers as it rapidly expanded.

Then came a series of thunderous noises, too rapid to distinguish individual sounds.

In an instant, Arthur flew fifteen kilometers!

Moving at about forty times the speed of sound, even he struggled to maintain control at such an extreme velocity. However, thanks to his Observation Haki covering a radius of over 400 kilometers, he was able to initiate an emergency stop in advance.

The spectacle drew everyone's attention, and they rushed outside to see what was happening.

"What is that? It's incredible!"

"Is this a miracle? Has God descended upon us?"

"Did King Arthur do this? He's too powerful! He truly seems like a god!"

"Isn't he a Logia Thunder Fruit user? His movements resemble those of Admiral Kizaru."

"What's going on? It feels like King Arthur is furious."

"It seems like something big is about to happen!"

These discussions spread not only through the newly sealed entertainment area but also throughout the heavens above.

On the Grand Line, all the inhabitants of the islands that Arthur passed over were equally astonished by the phenomenon.

At this extraordinary speed, a beam of light shot out from the Calm Belt in the first half of the Grand Line, extending thousands of kilometers into the New World.

The G-5 branch was positioned at the entrance of the New World, roughly seven to eight hundred kilometers from the Red Line.

Thanks to Jessica's life card, Arthur wasn't worried about flying off course. As he sensed the proximity of the Red Line, he prepared to brake sharply to avoid overshooting.

Huh?

As he approached at supersonic speeds, Arthur detected two familiar auras ahead, each as powerful as his own—Admiral Kizaru and Kaido.

Even at a distance of hundreds of kilometers, Arthur locked onto Kaido's presence and began to slow down to twenty times the speed of sound.

Meanwhile, the G-5 branch building had been completely destroyed, reduced to rubble scattered across the ground. Jessica and four other elite lieutenant generals were fighting fiercely against the flames and each other.

Admiral Kizaru, with a rare serious expression, was engaged in a battle with Kaido. Despite the ferocity of his attacks, Kizaru found it challenging to make a significant impact on Kaido, whose abnormal resilience allowed him to recover swiftly even after sustaining damage.

"Oh~ This resilience is terrifying," Kizaru remarked, a hint of seriousness creeping into his tone.

With a sudden surge, a laser beam shot from Kizaru's eyes, striking Kaido's head. Kaido howled in pain but continued his assault, his armed mace swinging down with tremendous force.

When~

"Sky Cong Yunjian!"

A long sword made of golden light appeared in Kizaru's hand, intercepting Kaido's mace. Kizaru felt his body sink slightly under the pressure, his expression growing grave beneath his glasses, though he maintained a casual demeanor. "Oh~ This is troublesome. Such strength. Oh? It seems we have a helper~"

Kizaru turned to look into the distance, sensing the impending arrival.

"Kaido!!!" Arthur roared, the sound trailing behind him as the speed of his approach exceeded that of sound.

Boom~~~

A deafening roar shook the air, causing everyone present to feel a prickling sensation on their skin.

Bang~bang~bang~

Though Kaido sensed Arthur's approach, he couldn't react to the incredible speed of twenty times the speed of sound. Arthur barreled into him, rolling across the island and carving a deep scar into the ground.

"Kaido!!!" Arthur's earlier roar echoed through the air.

Zi Zi Zi Zi~

As Kaido tumbled, the remnants of the beam of light coalesced into a storm of thunder and lightning, from which Arthur emerged like a tempest.

"Oh~ This attack is terrifying! Faster than me!" Kizaru observed with wide eyes before vanishing from sight.

"Come on!" Arthur floated in the air, casually glancing at Jessica. Seeing she was unharmed, he let out a sigh of relief.

He then surveyed his two legions and found them mostly unscathed, although some had suffered injuries from the aftermath of the battle.

Zi Zi Zi Zi~

In an instant, Arthur disappeared again.

Bang!

Yan Calamity Cinder was sent flying, his teeth shattered and blood spurting from his mouth after Arthur's fist struck his head with bone-crushing force. Even the ancient Zoan user, awakened as the Wind God Pterosaur, felt his will wavering under such overwhelming power.

"Unexpectedly, you're here! King Arthur!" Kizaru remarked from a distance, perplexed as to why Arthur had arrived.

Arthur met Kizaru's gaze, understanding that he was preoccupied with the battle and likely unaware of Big Mom's imminent arrival.

"Sengoku informed me that Big Mom was also coming. I was concerned that the other admirals wouldn't arrive in time, so I took matters into my own hands."

"What?" Kizaru's eyes widened in disbelief. The corners of his mouth twitched. Without Arthur's intervention, he would have faced severe injuries or worse.

"Angel kid!" At that moment, Kaido roared from the sea dozens of kilometers away, propelling himself toward Arthur with a furious swim.

"Hmph!" Arthur snorted, casting a glance at Kaido before focusing back on Jessica.

"Jessica, evacuate the base and get everyone away from the island! We're about to have a high-level battle here!"

"Understood! Be careful!" Jessica replied, activating her Ability 0.

The island shifted like plasticine, quickly mending itself as wounded soldiers were carried away on waves of earth toward the small town nearby.

Soon, much of the island's foundation was gone, leaving only what was necessary. 

Rumbling—

With a mighty shake, the entire island transformed into a vast flatland, compressing further. Jessica was preparing a solid battleground for Arthur and the others!

Bang bang bang bang~

As the ground settled into a hard surface, a series of roars erupted. Arthur turned toward the source of the noise and saw Kaido land on the island, charging toward him with his massive mace.

"Angel kid! This time, let's have a proper fight! Try to kill me!" 

Boom!

Kaido soared into the air, hurtling straight toward Arthur.

"I can't wait! I'll defeat you!" Arthur declared softly.

"Blade of the Thunder Spirit!"

Zizi~wing~

With a crackle of electricity and a buzz as the air vibrated, a blue-violet lightsaber materialized in Arthur's hand.

"Oh~ Has the Thunder Fruit been developed to this level? Impressive," Kizaru remarked, surprised by the lightsaber that mirrored his own Sky Cong Yunjian.

"Repulsion, Wu Zhan!"

Like the last time Arthur appeared here over six months ago, the electromagnetic force field surged outwards, now affecting a radius of three kilometers and proving even stronger than before.

Empowered by the repulsive force, the Blade of the Thunder Spirit, cloaked in an invisible layer of Haki, flashed forward and collided with Kaido's mace, which was also enveloped in a dense, pitch-black Armament Haki.

BOOM!

The collision was akin to an atomic explosion. For a moment, sound was suppressed by the sheer force, then unleashed in a deafening roar.

The entire island trembled violently, with the ground beneath Arthur splintering under the immense power.

Booming—

A powerful earthquake rocked the island, sending massive waves crashing into the surrounding waters.

Kizaru's expression grew serious as he realized the magnitude of the clash. "This is troublesome—Big Mom is on her way too."

"It's getting more intense, angel kid! Bring it on!" Kaido's eyes were bloodshot with excitement, swinging his mace wildly.

"Hmph!" Arthur didn't reply. Instead, he unleashed another series of relentless strikes against Kaido.

"Oh~ This is a brutal fight." Though Kizaru had previously witnessed their savage battle from afar, seeing it up close left him bewildered. The power displayed was extraordinary. Even Sakazuki, the strongest of the admirals, would find it hard to contend with a Logia user like Arthur fighting Kaido. *I need to consult the doctor about this later.*

As Arthur and Kaido clashed, the island groaned under the pressure, while Kizaru adopted his usual aloofness. Instead of intervening in their epic showdown, he sidestepped to engage with the still-injured Yan Calamity Cinder.

In a high-stakes battle like this, only time could reveal the victor.

Two hours later, a massive pirate ship adorned with a huge clown face and crowned with a crown approached the scene.

"Well~ Well~ They've started fighting. What a tough battle, well~ well well well~" 

Big Mom's laughter echoed from the ship, accompanied by the cheers of her numerous Homies.

"That angel kid! You must teach him a lesson this time! Well~ well well well~"