One Piece : Marine Scientist

"MARINES!"

Kaido thunderous voice echoed across the sky.

Below, countless Marines stood ready, their eyes fixed warily on the dragon-transformed Kaido looming above them.

Despite their numbers, the sheer presence of this colossal creature looking down upon them still instilled an overwhelming sense of dread.

"Hand over Jack! Or I'll wreak endless havoc on Marineford!" Kaido roared. "For every building you rebuild, I'll destroy another!"

Sengoku expression darkened at the threat.

This was nothing short of Kaido slapping the Marines across the face—and the worst part was, he could back it up.

"That damn Kaido…" Sengoku gritted his teeth.

Kaido had rampaged through Marineford before.

The madman cared for nothing, leaving only destruction in his wake.

Yet even when captured, no method of execution—burning, drowning, blades, or bullets—could kill him.

The title "Strongest Creature" was well-earned, making him a perpetual headache for the Marines.

"All hands, prepare for battle!" Sengoku commanded.

Soon, elite Marines gathered at Marineford, including Garp and the three Admirals.

"Kaido, do you really think the Marines are pushovers?" Sakazuki eyes blazed with fury the moment he spotted Kaido.

How dare a mere pirate act so brazenly, threatening them and trampling on the Marines' honor?

He wouldn't stand for it.

Without hesitation, Sakazuki stepped forward and unleashed his strongest attack.

"Meteor Volcano!"

His fists transformed into molten rock, launching massive magma fists skyward like a meteor shower, raining down upon Kaido.

"Boom! Boom! Boom!"

The scattered magma splashed everywhere, collapsing buildings across Marineford.

Yet Sakazuki remained resolute, his expression unyielding.

When dealing with pirates, he spared no means—what did a few buildings matter?

Besides, they'd be destroyed in the battle anyway.

His only thought now was defeating—or capturing—Kaido.

"SAKAZUKI!" Kaido roared, dodging midair or spinning to unleash razor-sharp wind blades from his body.

Sengoku clenched his teeth. "That hothead! At least lure him further away!"

Watching the destruction, he couldn't help but complain, but there was no turning back now.

Transforming into his golden Buddha form, he rushed forward to block the shockwaves from their clash, hoping to salvage what remained of Marineford key structures.

Amid the chaos, Leon stood motionless, his gaze fixed on the battle.

Suddenly, his eyes lit up.

Wasn't he after Lineage Factors? He'd already collected samples from most of the Marine's top brass.

Now, here was one of the Four Emperors—Kaido lineage was more potent than an Admiral!

Without delay, Leon stepped forward and shouted toward the fray.

"Fleet Admiral Sengoku! The bottleneck is Kaido! We need Kaido current blood samples, the more the better!!"

In the distance, Sengoku, who had already transformed into his golden Buddha form, suddenly froze.

Then, a smile spread across his face.

"Hahaha, good, I understand!"

With that, Sengoku prepared to step forward.

Leon quickly added "The more blood samples, the better!"

"No problem!" Sengoku replied with full confidence, waving his hand at Leon.

Killing Kaido would indeed be extremely difficult.

But simply drawing some blood from him... For the Marines, it couldn't be easier!

Meanwhile, in the distance, Kaido heard Leon loud shout.

His brows immediately furrowed.

He had previously heard that the creator of the Seraphim was just an eight-year-old child.

Now it seemed, it was this little brat before him.

He really was only eight years old!

A flash of surprise crossed his eyes.

However, Akainu, who was in the midst of battle, also brightened upon hearing this.

"Seraphim at Admiral level..."

"Perfect for me!"

With a furious roar, Akainu right fist turned into molten rock as he charged forward!

"Great Eruption!"

With a deafening shout, Akainu leaped into the air.

His massive magma fist, resembling a volcanic eruption, suddenly slammed toward Kaido!

At the same time, Aokiji and Kizaru eyes also gleamed with excitement.

Exchanging a glance, they wordlessly advanced! Launching relentless attacks at Kaido!

Aokiji swung his arm, and several ice spears abruptly materialized in the air.

In the next moment, they all shot toward Kaido!

"Hah!"

Kizaru, meanwhile, simply conjured a mirror light in his hand, instantly shooting it behind Kaido.

In the next moment, his body followed the path of the light... Arriving right behind Kaido!

This was none other than his "Yata no Kagami" technique.

Immediately after, he unleashed "Yasakani no Magatama," countless dazzling light bullets exploding and pouring onto Kaido massive frame!.

A barrage of attacks rapidly pummeled Kaido!

"Too weak! Are you Marines just tickling me?!" Kaido sneered, his dragon scales shattering to reveal grotesque flesh.

But for a monster like Kaido, such injuries meant nothing.

However, the next moment, he noticed Kizaru swiftly collecting his blood from his enormous dragon body.

Instantly, rage surged within him.

"BORO BREATH!"

Without hesitation, he opened his maw and unleashed a scorching blast straight at Kizaru.

But Kizaru speed was unmatched.

His form flickered repeatedly, effortlessly dodging the attack. No sooner had he evaded than he transformed into a golden streak of light.

Flashing to another spot, he seamlessly continued gathering Kaido blood!

"Damn it!"

Kaido face twisted in fury.

His massive dragon claws swiped wildly, but Kizaru dodged every strike mid-air with effortless grace.

With the coordinated efforts of the three Admirals, Kizaru lightning speed allowed him to gather a substantial amount of blood, driving Kaido into a frenzy.

"Damn you, Marines!"

Kaido expression turned savage, his eyes burning with fury.

Then, his gaze fell upon Leon again.

"It's all because of this little brat..."

Boundless wrath flooded his face.

His figure surged forward, the massive dragon claw reaching out to grab Leon!