One Piece : Marine Scientist

"How dare you cause trouble in my territory!"

"And with only two Admirals at that…" Kaido's eyes were fierce, his expression twisted with rage.

Previously, he had wreaked havoc at Marineford and managed to escape even when the three Admirals, Sengoku and Garp all joined forces against him.

Two Admirals were nothing to him.

"Boss, the two Admirals also brought a young man who looks extremely similar to Akainu—almost like a younger version of him!"

"Not only that, but he also has the same racial traits as King-sama and a pair of dragon horns just like yours!"

Kaido froze for a moment, then sneered.

"So, another new Seraphim! Just another Humanoid Weapon—what of it?"

"Do they really think the Beasts Pirates are easy to push around?"

Fighting on his own turf versus fighting on the enemy's turf was a completely different matter!

And there was a world of difference between him charging into Marineford alone and them barging into his stronghold…

"Kaido!"

Doflamingo's expression shifted before he finally gritted his teeth and spoke up…

From the description given by the Beasts Pirates' members, he had already figured out who the person brought by Akainu and Kizaru was.

It was the Marines' latest invention—a new model of Seraphim, Admiral-class Seraphim: Sakai!!

"Hmm?"

By now, Kaido had already hoisted his kanabo onto his shoulder.

"What is it?"

"That Seraphim was developed by the Marines' Dr. Leon! It was created using a combination of your and Akainu's lineage factor…"

"Its strength is extraordinary—you must be careful…"

Doflamingo's face turned grave as he added.

"I heard it even defeated Bullet!"

Hearing this, Kaido narrowed his eyes.

He was deeply wary of Leon.

Back when the mass-produced Warlord-level Seraphim were unveiled, he had already sensed how terrifyingly smart this little man was.

And now, with his own bloodline incorporated into the mix… It went without saying that this Seraphim was no ordinary weapon.

As for Bullet…

"Hmph, Bullet is just a washed-up loser from roger's crew!" Kaido face was full of disdain.

What kind of a joke was Bullet?

How could he even compare to Kaido himself?

Kaido had lost to the Marines multiple times, yet he still roamed free to this day!

Unlike that guy, who had been rotting in prison for who knew how many years.

Shaking his head, Kaido turned and strode away!

His body transformed into a massive azure dragon as he swiftly flew towards the location his subordinates had reported.

***

Soon, he could see the situation unfolding in Wano from afar.

"BOOM!!"

The sounds of destruction echoed relentlessly.

Dust filled the air and ruins stretched as far as the eye could see.

"Damn Marines…"

Clenching his teeth, he focused his gaze.

There, he saw only a young man wreaking havoc.

The two Admirals stood coldly to the side, watching without intervening.

And before the young man… Was a colossal eight-headed serpent!

A monstrous sight.

It was none other than Wano's shogun, Kurozumi Orochi—Kaido business partner!

Orochi had already activated his Devil Fruit ability, the Hebi Hebi no Mi, Model: Yamata no Orochi!

The eight ferocious serpent heads lunged wildly at the young man.

Yet, the young man dodged with agile grace, evading every strike.

"Hmm?"

High in the sky, Kaido's eyes sharpened.

His flight instantly accelerated!

The Seraphim right foot stomped the ground, launching him forward like a cannonball.

With a thunderous punch aimed at the central head of the Eight-Headed Serpent!

"BOOM—"

Instantly, the colossal force twisted the serpent's head grotesquely.

Blood sprayed in arcs, splattering across the ground.

The entire massive form of Yamata no Orochi was sent flying backward, crashing violently into his own shogun palace!

"CRASH!"

Buildings collapsed, the earth split apart!

A thick cloud of dust erupted from the devastation.

Amidst the settling debris, Kurozumi Orochi had reverted to his original form—eyes rolled back, unconscious from the single blow.

Just one punch had defeated Kurozumi Orochi!

"Hmm?"

Kaido's eyes flickered with surprise as he observed the Seraphim from afar.

An instinctive sense of threat prickled his senses.

That Kurozumi Orochi couldn't withstand even a single strike from this being... This spoke volumes about its terrifying combat prowess.

"To create such a monstrous Humanoid Weapon... Could an eight-year-old truly accomplish this?"

Wariness flashed through Kaido's gaze as he felt unprecedented pressure.

Historically, every formidable warrior had required years of relentless training to reach their peak.

Yet now, someone had engineered this abomination outright... If mass-produced... Even he might struggle against such forces.

"WHOOSH—"

In the blink of an eye, Kaido stood at the ground.

"Kaido. Finally showed yourself."

Akainu's lips curled into a cold smirk.

"After all your raids on Marineford, it's our turn now."

"I want you taste what it's like—having your stronghold razed to the ground!"

The destruction of a faction's headquarters wasn't merely about material losses.

It struck at the very dignity of the organization.

Exploiting his near-immortal body, Kaido had repeatedly mocked the Marines' authority.

Now, Akainu would repay him in kind!

Let the Emperor witness his own domain annihilation!

"Hmph. With this ragtag bunch?" Kaido sneered, looking down upon Akainu trio.

"Heh..." Akainu's face brimmed with triumph.

"Allow me to introduce—"

"Our newest Seraphim: Sakai!"

"Forged from the lineage factor you so generously donated last time. Admiral-class combatant, without question!"

Every word dripped with venomous sarcasm.

This was psychological warfare—forcing Kaido to confront his own blunder.

That reckless assault on Marineford hadn't just ended in humiliating retreat... It had gifted the Marines his precious bloodline.

"SILENCE!!!"

As predicted, Kaido's expression darkened like a thundercloud at Akainu's taunts.

A suffocating aura erupted from his body.

Killing intent crystallized the very air!

His bloodshot eyes locked onto Seraphim Sakai—This abomination carrying his lineage factor represented his greatest shame!

A living insult witnessed by the entire world!

This Seraphim had to be erased!

"CRACKLE—"

Lightning arced as Kaido's form shifted.

Instantaneously morphing into his hybrid dragon form—optimal for close combat!

Raised high, his spiked club crackled with electricity, swirling with supreme Haki!

"RAGNARAKU!!!"

"ZZZT—ZZZT—"

Kaido intended to obliterate this Seraphim with his signature technique!

Yet before the strike could land—Sakai suddenly pulled out a massive club...

In an instant, arcs of electricity and an overwhelming aura erupted!

It was none other than Kaido's signature move, Thunder Bagua!!!

[Sakai is made from kaido and akainu lineage factor, so basically he is kaido and akainu's child]

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