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  Arthur held the Devil Fruit Encyclopedia, nodding to Aurora. "I'll take this book. As for killing e Bege, I won't go bay word."

  His solemn tone finally eased Aurora's ay. Her cold, tense expression rexed, and a faint, forced smile appeared on her face.

  The two boarded a rge ship, with Aurora's trusted fidant ag as helmsmaing course for the isnd that served as e Bege's headquarters.

  The ship cut through the waves, sailing swiftly across the vast, boundless sea.

  In his , Arthur toyed with the Castle-Castle Fruit, his eyes glued to the Devil Fruit Encyclopedia.

  The book tained detailed information on thousands upon thousands of fruits with firmed records.

  Fruits like the Logia-type Dark-Dark Fruit, Magma-Magma Fruit, and so on were described i detail, with clear dires for development. Following these instrus would lead to great power.

  However, for some reason, the entry for the Rumble-Rumble Fruit arse, with only a few lines and a picture.

  Perhaps the fruit had been lost in Sky Isnd for so long that information about it had bee scarce.

  The entry for the Paramecia-type Op-Op Fruit was even more bare-bones, with only a picture and a single sentence, possibly due to iional cealment by the Wover.

  They were likely afraid that knowledge of its effects would incite worldwide chaos.

  Eternal youth, after all, was the ultimate dream of tless people.

  And it wasn't just the immortality surgery. The ability to switch minds was enough to drive ah ambition wild with desire.

  For example, the Wover could capture a powerful pirate, switch their mind with someone loyal to the Wover, and instantly create a top-tier fighter.

  It was a truly terrifying ability.

  "I remember the Op-Op Fruit won't appear for at least aen years, on Minion Isnd in the North Blue, in the year 1509! If things haven't ged by then... I'll be sure to cim it!" Arthur's eyes fshed as he made his decision.

  He would never allow such a dangerous fruit to fall into another's hands. Only in his possession would it be truly safe.

  Who knew if the person beside you had their mind sed, being someone else's pawn, ready to stab you in the back at any moment?

  Arthur even decided to find a Devil Fruit that could see through minds iure...

  ....

  "Boom!!"

  The weather at sea was uable. One moment it was clear skies, the , dark clouds gathered, and thunder rumbled.

  Torrential rain poured down, and waves crashed against the ship, making it rock violently, as if it would be swallowed by the sea at any moment.

  "Arthur!" Aurora pushed open the door, her face urgent. "The weather has ged. We should turn back. The return journey is shorter tharip to e Bege's headquarters..."

  "No need. Keep going!" Arthur's expression was calm. He wasn't afraid of the storm. He tio peruse the Devil Fruit Encyclopedia.

  With his inhuman Observation Haki, how could he not sense something as simple as the movement of the wind and the shifting of clouds?

  He had already sed the surrounding dozens of miles.

  Besides, even if the ship capsized, he could transform into Lightning and fly.

  "Fine!" Aurora could only trust Arthur. She gritted her teeth and gave the order to her fidant.

  Seeing her rush out, Arthur waved his hand, closing the door. He closed his eyes, carefully sensing the ges in the surging Lightning within the clouds.

  Why was a natural Logia called a natural Logia? Because it was attuo a partiatural phenomenon.

  Therefore, in Arthur's view, the person who could teach you how to perfectly develop a Logia fruit was nature itself.

  Arthur's Observation Haki "watched" the Lightning in the clouds, paring it to his own, searg for differences or different paths of development, to chart his future course.

  "Zzzzzzt!"

  Lightning surged wildly within his body. Every inch of his skin, his muscles, even his hair, was charged with electricity, making the room glow blue.

  Under Eleagidu, all metal objects began to float.

  "How I overe the two hundred million Volt limit?" Arthur sehe Lightning in the sky, stantly paring it to his own.

  He had been stuck at two hundred million Volts for quite some time, uo surpass this limit no matter what.

  "In nature, Lightning reach over one billion Volts. That means my Rumble-Rumble Fruit is only a fifth as powerful as natural Lightning. There's still a vast potential for improvement!"

  Arthur frowned, p how to catch up to the power of nature.

  "Could it be a limitation of the human body? The human body 't pare to nature?" He sidered this possibility.

  Humans were born from nature. To surpass nature was easier said than done, but not impossible.

  Because, his current body could transform into Lightning at any time, the same as the Lightning in nature!

  Right now, Arthur's Rumble-Rumble Fruit had passed its period of rapid development. To develop it further, vertically, to increase the Voltage, would require time. He could only develop it horizontally, expl Eleagism, heat geioric light movemeric waves, and other abilities.

  His power was far beyond Enel's two hundred million Volts. His maximum destructive force should be parable to, or even surpass, the stro fighters in the Marines.

  A single Raigo could easily destroy an isnd and wipe out a try.

  Of course, destructive power dide tth. Enel could do the same. But Arthur's Lightning was far more powerful than Enel's, and his physique had reached the peak of the Grand Line, not far from those legendary figures.

  "It's alright. Laying a solid basis is essential for further progress," Arthur soled himself, his mood improving.

  ....

  The wind stopped, the rain ceased, and the sky was clear, a brilliant blue, almost indistinguishable from the sea.

  Arthur and Aurora stood side-by-side on the deck, enjoying the sea breeze and admiring the sery. She kept chattering endlessly about the affairs of e Bege's Mafia.

  Arthur, naturally, couldn't be bothered to listen. Right now, he was daydreaming, thinking about how to develop the Rumble-Rumble Fruit's abilities horizontally.

  He sidered his electric light movement to be no worse than Kizaru's, perhaps even stronger. After all, he could ge dire, while Kizaru couldn't.

  So he didn't o develop that further, because there was no need. In terms of movement ability, he was sed to none on the Grand Line, unless a legendary space-type fruit appeared.

  As for heat geion, Arthur's Voltage could instantly melt dozens of tons of gold into liquid, several times hotter than ordinary magma. He wouldn't be afraid to go head-to-head with Akainu's magma, and might even vaporize it.

  He had reached a limit of two hundred million Volts with his Lightning. He couldn't surpass it for now. Although his attack power was strong, it was far inferior to a monster like Whitebeard.

  Only the electric field enha of his physique was ongoing, ceaseless.

  So, after thinking it over, it seemed that oromagism had room for further development.

  Moreover, Eleagism could almost be sidered a cheat, an all-purpose ability, an abnormal level. If he could truly develop it, he might even be able to call himself invincible.

  Arthur had already tried usiromagism to trol metal on Sky Isnd, with remarkable results. But his uanding of how to use Eleagism for attacks was still rudimentary.

  He had only developed the ability to use magic force to propel metal to kill enemies, or to trol metal. And there was the Eleagism - Iron Sand Sword, and usiromagism to create a full-body defehese were all the most basiderstandings and applications.

  Thinking of this, Arthur couldn't help but feel a headache. "Developing a fruit really requires imagination or knowledge, doesn't it? Damn it, it's so annoying!"

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