A/N: Is one piece world 20 times bigger? Yeah don't mind the world of one piece logic, their sailed boat moved even faster than nuclear ship on modern world.
While Strawhat Pirates and Revolutionary Army went to Little Garden, Garp just arrived on Whiskey Peak
Vice Admiral Garp expression were heavy and no one talk with him after seeing his scary face, Sengoku told him to negotiate with his son to bring back Akainu to marine force.
Earlier report said that they are still on whiskey peak but his ship arrived too late. There are several marines who are still alive, some was heavily wounded and some are helping their comrade.
They didn't left the island because their ship has been destroyed by the Iron Legion, so they are waiting here for reinforcement. It was different for Baroque Works and Pirates who left the island because they are afraid more marines would come to this island.
"Vice Admiral Garp!" one of them shouted, voice cracking. "You came…!"
Garp didn't answer. His eyes scanned the coastline, half of the island had become wasteland and they are active volcano on that side.
As they dropped anchor, Garp leapt down to the beach, the ground shaking as he landed. The remaining marines reported to him.
"Vice admiral, we lost so many soldier and even admiral akainu had been captured by them."
Garp nodded. "How many still alive?"
"There are more than 70% marines still alive," replied the Marines.
"Give them food and bring doctor to check their wound," ordered Garp before boarding his ship and take den den mushi.
After a few seconds Sengoku answered the call.
"Sengoku, they are many marines who are still survive on whiskey peak, my ship is too small bring more ship here," said Garp.
"Ok, I will," replied Sengoku. "How about Akainu?"
"I am too late, I will go to the next island to find him," said Garp.
After he ended the call, Garp asked Bogard which island that his son would go next.
"Vice Admiral, the next island is a little garden but I believe we should go to Drum Island because if we wanted to intercept them it was best on that island instead of little garden," answered Bogard.
"First make sure all the marines on this are saved then we will go to drum island," ordered Garp.
***
The Revolutionary Army had no choice but to follow the Straw Hat Pirates after their ship was destroyed at Whiskey Peak. Jack had promised them that he will build something better for them and as of now, they didn't have any transportation so they decided to board going merry with Strawhat Pirates.
Luffy didn't care and he feel happy especially now Sabo is boarding his ship. For now RA shared the same router and the same meals aboard the going merry. While waiting for Jack to build a new ship for them.
Jack, however, was overloaded. Not only did he promise Dragon a replacement ship, he also wanted to build something far superior, a flying carrier inspired by the Helicarriers he once saw in the fictional Marvel Cinematic Universe. It wouldn't be finished overnight; even for Jack, such an engineering feat required days of nonstop work.
And that wasn't all. Jack was already juggling multiple inventions, one of them being his newest creation, the Devil Fruit Radar.
Like the name, It could detect Devil Fruits within a hundred-kilometer radius and mark them as blue dots, while Devil Fruit users appeared as red dots. Better yet, it had a memory function, Jack could label anyone previously scanned for example Luffy, Robin, Kuma and Bonney. But just than he thought of something why not a radar for everyone so he added new function, a normal person is white dots while robot is yellow dots. No marine, pirate, or assassin could ever sneak up on them again.
But the most absurd part on his technology, is Jack previous experiment was finally complete. He had achieved something even Vegapunk declared impossible.
He cloned a Logia Devil Fruit.
A feat the world's smartest scientist, rumored to possess the intellect of someone 500 years ahead, couldn't replicate. That man is Vegapunk, in the original series he had once told the Straw Hats pirates that Logias were effectively impossible to recreate or duplicate Zoans were the easiest, Paramecia came next and Logias were out of reach.
And yet Jack made one in a matter of days. Dragon watched silently, barely hiding his astonishment.
He had heard the same thing directly from Vegapunk. The idea that someone surpassed that limit so casually… was almost frightening and that man boarded the same ship with his son.
That night, they all gathered around the dinner table as Jack placed a strange, swirling fruit on the plate.
"This," Jack announced, "is the Magu Magu no Mi. Eat it, and your body becomes magma. Anyone interested?"
"Me! Me! I want it!" Luffy jumped to his feet instantly.
Usopp bonked him on the head. "You idiot! You already ate the Gomu Gomu no Mi!"
Everyone burst out laughing as Luffy rolled on the floor, holding his head.
"You can't eat two Devil Fruits," Jack reminded him, amused. "Your body would explode."
Luffy deflated like a popped balloon, sulking dramatically while Usopp teased him.
"Hahaha! You can't eat it~!"
"Usopp…" Luffy growled before punching him.... only for Usopp combat suit to absorb the blow.
"Both of you, knock it off!" Nami snapped, bonking them both with a single punch.
Jack lifted the fruit again.
"Bartolomeo. This one for you."
Barto froze. His eyes watered. "J-Jack-senpai… is this… really for me?"
"Yeah," Jack said with a small smile. "After seeing how hard you fought, you earned it."
Bartolomeo burst into tears and lunged forward, hugging Jack like a koala hugging a tree.
"Stop crying and eat it before it rots," teased Jack.
Bartolomeo nodded vigorously and took a huge bite.
"Bleeeeergh! Why does it taste like burning garbage?!"
"Hahaha! I forgot how nasty Devil Fruits taste!" Luffy laughed loudly.
"Finish it," Jack said mercilessly.
Bartolomeo forced himself to swallow every last piece, trembling dramatically.
"Good. Now focus.... imagine your hand turning into magma."
Bartolomeo took a breath, concentrated…
and his arm erupted into bubbling molten lava.
"It's... hot! But it doesn't hurt!"
"Exactly," Jack nodded, satisfied.
Everyone stared, stunned, as molten magma dripped from Bartolomeo's fingers. The former power of Akainu... one of the most fearsome Admirals was now in the hands of Luffy most loyal fanboy.
Bartolomeo turned to Luffy, tears of joy streaming down his face. "Luffy-senpai!!! I can help you even more now!"
"I'm counting on you, Barto," Luffy grinned widely.
Bartolomeo flexed his magma-coated fingers, which dripped molten rock onto the ground. Each drop hissed like acid eating into the deck, but before it could cause serious damage, Jack pressed a button on his wrist.
A shimmering blue barrier formed under Bartolomeo's hand, preventing the magma from burning through the wood.
"Careful," Jack said. "Your body can handle it, but the ship can't it wasn't vibranium metal but just a simple wood."
Bartolomeo sniffled, half crying, half laughing. "Jack-senpai… you even protected the deck for me… I—I don't deserve you!"
"Guys who cry while setting things on fire are scary," Nojiko muttered while smirking a bit.
Robin, who quietly observed everything from the side, narrowed her eyes. She had only joined recently, but every hour around this crew made her question if her previous understanding of "pirates" even applied here. The chaos, the absurdity, the sheer unpredictability.... they were nothing like his past crew who she had betrayed.
Kuma stood beside her, arms crossed, watching Bartolomeo test his powers like a toddler playing with matches. "It is… impressive," Kuma admitted.
Bonney leaned forward with her chin in her hands. "Y'know… if Jack can copy Logias, maybe I should ask him to make me the Munch-Munch-Munch-Magma-Magma-Fruit."
"No," Jack said instantly, not even looking at her. "Absolutely not. Your original fruit is already dangerous."
Bonney pouted and chomped on a piece of meat aggressively as protest.
"What do you mean dangerous?" asked Bonney.
"Wasn't your power comes from imagination that is why you are dangerous," replied Jack.
"You know my daughter power?" asked Kuma.
The other also wanted to know what Bonney power really is, what they know is she can turn someone into old person or younger version. Is there any secret to her devil fruit power.
"Yeah, but that was for later, I wanted to test something to Bartolomeo first," said Jack. He then signaled Bartolomeo to go training room, that room has a best wall to defend against heat.
***
Bartolomeo raised both magma-covered hands triumphantly.
"LUFFY-SENPAI!!! LOOK!!! I'M LIKE A WALKING VOLCANO!!!"
"THAT'S SO COOL!!!" Luffy shouted back, vibrating with excitement. "Your punches must feel like super spicy meatballs now!"
Sanji glared immediately. "My cuisine has NOTHING to do with molten rock!! Idiots!"
Zoro crossed his arms, unimpressed. "Fire, magma, lasers, electric armor… tch. Everyone's getting flashy powers. What about good, swordsmanship?"
Jack patted him on the shoulder. "Your swordsmanship is basically a natural disaster already. You don't need upgrades."
Zoro smirked slightly. "Heh. True."
Jack stood up and gestured them to go outside.
"Alright, Bartolomeo. Let's do a safe test."
"YES, JACK-SENPAI!!!"
"Try to launch a small magma fist into the sky. Not too big. Don't melt the clouds."
"Melt the WHAT!?" Koala choked.
Before anyone could respond, Bartolomeo concentrated. His right arm turned entirely into molten magma, then he punched upward.
A blazing pillar erupted from his fist, ripping through the clouds like a volcanic eruption spearing toward the heavens.
A sonic boom followed.
Everyone's hair blew back. Vivi clung to Nojiko. Usopp screamed.
Sabo and Koala stared in disbelief. Even Dragon raised an eyebrow.
From the crow nest, Robin murmured softly, "Amazing…"
Jack nodded, impressed. "You're adapting pretty fast, Bartolomeo."
Bartolomeo fell to his knees again, crying waterfalls. "JACK-SENPAI!!! YOU TRUST ME WITH SUCH POWER!!! I WILL GET HURT FOR YOU!!! NO— I WILL GETTING HURT TWICE!!!"
"Ok but," Jack said flatly. "That's not helpful."
***
Later that night, Jack remained awake as usual. His cyborg-enhanced body no longer required melatonin or natural rest, instead of sleeping, he used the quiet hours to run diagnostics, refine blueprints and improve the Devil Fruit Radar. The soft hum of machinery filled the small room, illuminated by the pale glow of holographic screens.
Knock. Knock.
Jarvis voice echoed gently through the speakers. "Sir, Dragon and Sabo are at the door."
Jack blinked, surprised. "At this hour?"
Still, he walked over and opened it.
"May I help you?" he asked.
"Can we come inside?" asked Dragon.
"Yes, sure," replied Jack.
Dragon stepped inside first. His eyes immediately latched onto the Devil Fruit Radar on Jack's workbench, studying it with the calculated intensity of a man who'd spent decades fighting the world government.
"Can I request one Devil Fruit from you?" Dragon asked directly.
Jack raised a brow. "You want magu magu no mi too?"
Dragon nodded. "Yes. I want Sabo to eat it."
Jack turned his attention to Sabo. "Are you sure you want a Devil Fruit? You'll lose the ability to swim. That's a big sacrifice for someone in the Revolutionary Army."
Sabo didn't hesitate. "If it makes me stronger, strong enough to protect others, then it's worth it. I'll give up swimming."
Jack nodded. "Alright. Wait about thirty minutes. I can prepare a clone version for you."
Sabo relaxed a little, but Dragon remained deep in thought.
"I met Vegapunk once," Dragon said slowly. "He claimed cloning a Logia was impossible. He said no one, not even him, could replicate the core properties of such fruits."
Jack shrugged lightly. "That's because Vegapunk relies strictly on Lineage Factor. His science is brilliant… but limited. He's trying to replicate nature. I don't follow nature's rules."
Sabo and Dragon exchanged a glance before nodding.
Dragon spoke again. "What other fruits can you copy?"
Jack tapped his chin. "Logia is the hardest, but I managed it anyway. Zoans are the easiest. Paramecias is in the midle, with enough samples, I can duplicate those too. In short, if any Devil Fruit is in my possession, I can clone it."
Silence filled the room for a moment.
Then Dragon exhaled slowly. "Jack… you truly are a variable the world government never predicted."
........
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