One Piece: One for All

The Rocketman screeched to a halt, its wheels grinding against the tracks as steam hissed into the air. The towering gates of Enies Lobby loomed ahead, a stark reminder of the immense challenge awaiting them. Jiro stepped off the train, his heart pounding. Around him, the Straw Hats, Franky Family, and Galley-La workers were already springing into action, their battle cries ringing out as they charged forward.

This was it. No turning back.

Jiro adjusted the bandana around his head, trying to look more confident than he felt. 'What am I even doing here?' He glanced around, watching as Zoro unsheathed his swords, Sanji lit a cigarette with a calm smirk, and Luffy stretched his arms, ready to slingshot himself into the fray.

Meanwhile, Jiro had... nothing. No swords, no guns, no Devil Fruit powers. Not even a proper fighting stance. He had spent years learning about this world, but knowing about pirates and Marines didn't translate into combat skills.

As the Marines charged toward them in droves, Jiro froze. His feet felt like they were glued to the ground.

"Oi, Jiro!" Luffy called out, grinning. "What are you waiting for? Let's go!"

Before Jiro could respond, a Marine lunged at him with a spear. Instinct took over. Jiro dodged to the side, stumbled on a loose rock, and accidentally slammed his knee into the Marine's groin.

The man crumpled to the ground with a high-pitched squeal.

"MY BALLS!!! AHHHHHHHH"

Jiro blinked, stunned. He looked down at the groaning Marine, then at his own knee. "Uh... did I just win?"

Another Marine rushed at him, sword raised. Jiro panicked, flailing his arms wildly. His fist connected with the man's nose, sending him staggering backward. Before he could recover, Jiro kicked him square in the stomach—and then, just to be safe, followed up with another kick aimed lower.

The Marine collapsed, clutching his... sensitive area.

"UGH... I think I saw my life passing through my eyes"

A grin spread across Jiro's face. "Oh, this might actually work!"

He turned to face the next wave of Marines, adopting a "fighting stance" that was really just him bouncing awkwardly on the balls of his feet. "Alright, who's next?"

The Marines hesitated, clearly confused. "What kind of fighting style is that?" one of them muttered.

Jiro smirked, twirling a discarded mop he had picked up from the ground. "It's called... Survival of the Shameless!"

Meanwhile, the Straw Hats were tearing through the enemy ranks with their usual flair. Zoro sliced through Marines with precision, Sanji's kicks sent them flying, and Luffy bulldozed through the crowd like a force of nature.

Jiro, on the other hand, was carving his own unique path.

A Marine swung a sword at him, but Jiro ducked under it and jabbed the man in the ribs with the mop handle. Another tried to grab him from behind, only for Jiro to elbow him in the stomach and follow up with his knee bursting the Marine's balls.

It wasn't pretty. It wasn't graceful. But it worked. If you don't know how to fight, then you don't need martial ethics.

The Straw Hats, however, were starting to notice.

Sanji glanced over, lighting another cigarette. "What the hell is he doing?"

Zoro, slicing through a group of Marines, spared a glance at Jiro. He grimaced as he saw Jiro deliver yet another groin kick. "That guy's got no shame."

Usopp clutched his own groin instinctively. "I don't know about you guys, but my balls feel cold just watching him."

"Same," Sanji muttered, wincing as Jiro took down another Marine with a well-placed kick.

"Oi, Jiro!" Usopp called out from a distance, aiming his slingshot. "What the heck are you doing?!"

"Winning!" Jiro shouted back, dodging a punch and retaliating with a swift kick to his opponent's shin.

The battlefield was pure chaos. Marines and Cipher Pol agents poured out from every corner, their numbers seemingly endless. But the assault force was relentless. Franky and the Galley-La workers took down the monstrous dog-riding guards, while the Franky Family battled the giants Oimo and Kashii.

Jiro found himself face-to-face with a particularly burly Marine, his muscles rippling as he cracked his knuckles. "You're going down, kid," the Marine growled.

Jiro gulped. 'Okay, think. What would Luffy do?'

Before he could come up with an answer, the Marine charged. Jiro sidestepped clumsily, tripping over a fallen sword and accidentally swinging the mop into the man's nose hole. The Marine staggered back, crying in pain. Seizing the opportunity, Jiro dropped the mop and delivered a swift kick to his balls.

"You... Shameless!! AHHH!!!" The Marine let out a strangled yelp and collapsed.

"Man, I'm on a roll!" Jiro said, wiping sweat from his brow.

As the battle continued, word of the chaos reached Spandam inside the courthouse. He lounged in his chair, smugly sipping tea. "They won't get past our defenses," he said confidently.

"Sir!" a Marine burst into the room, panting. "We've got a situation!"

Spandam raised an eyebrow. "What is it now?"

"Over 2,000 of our men have been taken out!" the Marine stammered.

Spandam leaned back, unimpressed. "Straw Hat Luffy, I presume?"

"Yes, but there's another one... a man fighting alongside him. He's... um..." The Marine hesitated, unsure how to phrase it.

"Well? Spit it out!" Spandam snapped.

"He's attacking people's... uh, sensitive areas," the Marine muttered, blushing. "They're calling him the Ball Burster."

Spandam's teacup slipped from his hand, shattering on the floor. "WHAT?!"

Back on the battlefield, Jiro was in his element. A Marine swung a sword at him, but Jiro dodged and retaliated with a poke to the man's armpit, causing him to drop his weapon. Another Marine tried to flank him, but Jiro spun around and jabbed him in the ribs, tickling him until he fell over laughing then beat him up black and blue.

Jiro laughed, exhilarated. "I don't need fancy techniques! I just need to survive!"

But deep down, he felt a pang of guilt. This wasn't what he wanted. He wanted to fight seriously, to stand shoulder to shoulder with the Straw Hats as a true comrade. Instead, he was flailing around, using dirty tricks to stay alive.

'This can't be my fighting style,' he thought, kicking another Marine where it hurt most. 'I need to come up with something better. Something I can be proud of.'

By the time the sun began to set, the battlefield was littered with groaning Marines clutching various parts of their bodies. Luffy stood on the steps of the courthouse, calling out to Jiro. "Hurry up! We've got to save Robin!"

Jiro jogged over, still holding the mop. "I'm coming, I'm coming! Jeez, do you know how many balls I've had to kick today?"

"Whatever you're doing, it's working!" Luffy said with a laugh.

For the first time, Jiro felt a flicker of pride. He might not have a fighting style, but he had determination and a knack for thinking outside the box.