One Piece: My Crew is from Other World

Originally, Najenda had been aimlessly searching for something worthwhile to do.

That changed the moment she stumbled across a secluded cave—and an even more shocking discovery within it.

A powerful presence. Unrefined, chaotic… but undeniably dangerous.

"Well then," she murmured, eyes gleaming with interest. "Looks like things just got interesting."

In response to her intent, a towering Susanoo materialized behind her, its glowing form roaring to life.

From within the cave, a man slowly stepped forward—Carlos. His expression twisted into a wild grin as he met her gaze.

"Wanna fight me?" he asked, voice dripping with deranged excitement. "Hehehe…"

A sinister aura surged around him. "I've finally mastered that power. Even your captain hasn't managed it yet."

He chuckled darkly, raising a hand as the ground beneath him cracked.

"Using the Dragon Hunter Pirates as my test subjects… not a bad way to begin."

He pointed at her, an accusing finger cloaked in arrogance. "After all, you're the ones who gave me the intel in the first place!"

A wave of destruction exploded from his body, a tangible pressure that made the air vibrate. Najenda eyes narrowed. This energy… it was familiar.

It reminded her of the Infinity Stone Ryuunosuke had once sought. Similar—but not the same. Where Kuina's aura was calm and balanced, Carlos's power was unstable, ragged like an out-of-control beast.

He had tapped into something unnatural… and it was tearing at him from within.

"Boom!"

With no hesitation, Najenda launched Susanoo forward. The massive avatar's strike tore through the air, leaving a trail of glowing afterimages.

But Carlos didn't flinch. He roared, power bursting forth, and caught Susanoo's descending fist with one hand. A violent shockwave rippled out, cracking the cave walls.

Carlos smirked wider. "Is this all the Dragon Hunter Pirates have to offer? How disappointing."

He took a step forward, still holding the giant fist aloft. "If that's all you've got—"

"Bang!"

Before he could finish, Najenda vanished and reappeared right in front of him, her entire body cloaked in Armament Haki. Without a word, she brought her fist down on his head.

"BOOM!"

The impact detonated like a bomb, sending debris and dust in all directions.

—Meanwhile—

Back in Foosha Village, night had settled over the sea, and business at the bar was booming.

Ryuunosuke, wiping sweat from his brow, handed drinks across the counter. But suddenly, he froze mid-pour.

A fierce tremor in the distance. A clash of powerful Haki—and something darker.

"…That's Najenda's aura," he muttered. "She's fighting seriously?"

Another presence pulsed faintly. Unfamiliar… and warped.

"Hey! Where's my drink?!"

A patron barked impatiently from across the bar, completely unaware that the man he was rushing was none other than the captain of the Dragon Hunter Pirates.

Ryuunosuke slid the mug across the table. "Coming right up."

Without another word, he disappeared into the back and approached Makino.

"Sis, I've got something to handle. Kuina, Akame—help out here for a bit."

Before Makino could respond, he vanished into the night.

—Back at the cave—

Carlos's laughter had grown increasingly unhinged. His twisted ambition filled the area like poison. And Najenda, calm as ever, stood ready to strike again.

Ryuunosuke landed nearby just in time to witness the madness.

He frowned. "Carlos…? What the hell are the Red Hair Pirates thinking?"

He hadn't seen Carlos in battle before—but this… this wasn't just combat. It was mania.

Carlos turned, eyes gleaming.

"Well, well, look who joined the party!"

He spread his arms wide, power bursting from him like an explosion.

"Perfect! Now I can capture both of you and dissect what makes you so special!"

"Dissect this," Ryuunosuke said coldly.

He vanished, reappeared behind Carlos, and with a single palm strike, knocked him unconscious. The sheer force shattered the surrounding rocks.

Carlos hit the ground like a broken puppet.

Even so, the twisted energy still clung to his unconscious body.

"Captain," Najenda called. "You need to see this."

She quickly explained everything: the cave, the battle, and Carlos's obsession.

Ryuunosuke's expression darkened as he approached the half-devoured corpse of a Sea King nearby.

"The same Sea King… the one that bit off Shanks's arm," he muttered.

Pieces were missing, carved with surgical precision. Carlos had been experimenting on it.

"And for what?" Ryuunosuke narrowed his eyes. "He knew Shanks already got the Infinite White Stone intel from Koshiro. Why stay here?"

No sign of the rest of the Red Hair Pirates. Carlos was alone.

He pulled out his Den Den Mushi.

Beru beru… beru beru… click!

"Ryuunosuke?" Shanks's voice came through. "Something wrong?"

"Carlos attacked my crew," Ryuunosuke replied bluntly. "Thought you should know."

Shanks's tone instantly sharpened. "Did you kill him?"

"Not yet," Ryuunosuke said coldly. "But if you don't give me a damn good reason why he's here, I will."

Silence.

"…He insisted on studying that Sea King," Shanks finally replied. "He's our ship's head scientist. I allowed it. But I didn't expect him to go this far."

"He nearly leveled Foosha Village," Ryuunosuke said flatly. "If I hadn't stopped by Makino's today, the whole island might've been destroyed."

Shanks sighed heavily.

"If you can… don't kill him. I'll take full responsibility. I'll come get him myself."

He paused.

"As a gesture of goodwill, I'll give you exclusive intelligence on the World Government."

That got Ryuunosuke's attention.

He weighed it for a moment. Carlos was unhinged—clearly affected by the White Stone's residual energy. But if Shanks was willing to make a trade…

"Fine. We're heading to the Grand Line soon anyway," Ryuunosuke said. "Meet me in Whiskey Town."

He ended the call and turned to Najenda.

"Take him back to the ship. No special prison needed."

"Treat him as a training dummy for the crew. Let them beat the crazy out of him."

She smirked slightly. "Understood."

Ryuunosuke stepped into the cave one last time.

There, scattered across a table, were Carlos's research notes—pages filled with diagrams, theories, and madness.

To Ryuunosuke, it looked like ancient gibberish. But Dr. Asiya might be able to make sense of it.

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