Ronan opened his eyes, a faint trace of lightning flickering within his pupils.
"So this is it… the qualitative change of Vajra inner energy into lightning-attributed power?"
As Nami slowly lowered her golden staff, the cascading wall of thunder finally dissipated.
Four figures opened their eyes almost simultaneously.
In that instant, the aura they released blew away the lingering magnetic clouds around the Merry.
Ronan exerted force with one hand, pulling back the long spear that Luffy had been clutching.
The Seastone tip sliced through the air, crackling with electricity.
He lowered his stance, and with a simple horizontal sweep—
The spear moved like a golden dragon's tail.
"BOOM!"
A crescent-shaped shockwave, dozens of meters long, tore through the air.
Unlike before—
This strike was wrapped in thick blue plasma.
As it cut across the sea, it not only raised towering waves but also turned the surrounding waters into a massive electric field.
Luffy leaped up excitedly, clenching his fist.
His Armament Haki instinctively fused with the lightning-infused inner energy.
A storm-like aura gathered around his knuckles.
"This feeling… I'm overflowing with power!!"
He punched into the air.
"Gomu Gomu—Thunder Vajra Punch!"
Without even making contact—
The pressure alone crushed the sea into a massive hemispherical depression.
Then—
Lightning detonated beneath the surface, sending a pillar of water skyward.
Zoro slowly drew Wado Ichimonji.
The blade no longer carried just cold steel—
A thin, high-frequency electromagnetic layer shimmered along its edge.
With a slight shift of his body, he swung.
"CLANG!!!"
The flying slash streaked across the ocean.
The heat and speed prevented the water from closing immediately—
Instead, a mist formed along the cut, leaving behind a long, scorched blue trail stretching for miles.
Sanji stomped the deck, instantly igniting Diable Jambe.
But this time—
Within the blazing red flames flickered silver-blue lightning.
Fire and thunder merged into a near-purple plasma.
"Try this!"
He leaped into the air and unleashed a ranged kick.
A massive crescent-shaped blade of spiraling fire and lightning shot forward.
Upon impact—
It exploded like a deep-sea bomb.
Flames and electricity intertwined, forming a dazzling mushroom cloud.
—
On the deck, Nami and the others stood frozen in shock.
Robin closed her book, eyes filled with amazement.
"With just one training session… their inner energy has fused with lightning."
"This has surpassed ordinary physical techniques… it's evolution into a higher form of power."
Usopp clutched the railing, eyes shining.
"That's so cool… I need to master Vajra Body too!"
"If my ammo gets lightning effects, I'll be the 'Thunder Sniper'!!"
—
Meanwhile—
The source of all this power—
Nami—
Was on the verge of tears.
"You… you bunch of bandits!"
She gritted her teeth, jamming her golden staff into the ground like a stick.
"I JUST got the Rumble-Rumble Fruit!"
"I didn't even get time to show off yet—and now EVERYONE has lightning effects?!"
She pointed at Luffy's electrified fist, then at the sparks dancing on Zoro's blade.
Her face collapsed in despair.
"This kind of power… you can TRAIN into existence?!"
"The Rumble-Rumble Fruit… the Rumble-Rumble Fruit isn't even worth it anymore!!"
"My uniqueness is gone!! Waaaah!!"
—
"Nami, don't say that."
Ronan stood calmly, feeling the vibrant lightning energy flowing through his body.
"The fruit is the source. We're just borrowing your light."
"Without your precision control, we'd all be burned to ash."
He looked at Luffy and the others, confidence in his voice.
"Now we have the hardness of Armament Haki…"
"The resilience of Vajra inner energy…"
"And the destructive force of lightning…"
"This trinity of power will let us tear through any darkness ahead!"
—
"Finally… Nami. Robin."
Ronan turned to them.
"You two are the only ones left who haven't trained the Thirteen Guardian Body technique."
Nami stiffened slightly, hesitation in her eyes.
"But… Ronan, won't that kind of training turn me into a muscle monster like you guys? I don't want to become some brute…"
Ronan smiled gently.
"Nami, you have the Rumble-Rumble Fruit."
"That's the purest form of energy."
"You can use lightning to refine your body from the inside out."
"It won't bulk you up—it'll make your body more toned, more agile…"
"And even more beautiful."
—
Then he turned to Robin.
She stood there, composed and elegant, but her gaze ran deep.
"Robin."
"You chose to join us. This is your home now."
"We're your most reliable companions."
"The past… the World Government… none of that should stop you from growing stronger."
"In this sea, strength is freedom."
Ronan raised his hand slightly, a faint arc of energy trailing through the air.
"Train with Nami. Use her lightning as a catalyst."
"When every arm your Flower-Flower Fruit creates gains Vajra-level strength…"
"That will be true 'blooming of a thousand flowers.'"
Robin paused—
Then smiled.
A genuine smile.
For the first time, a flame of determination lit within her eyes.
—
"And Usopp—you need to step it up too."
Ronan glanced at him.
"A sniper with an indestructible body becomes the hardest target in the world."
"Of course! I'm going to be a brave warrior of the sea!" Usopp puffed up proudly.
—
Finally—
Ronan looked at Chopper.
"Chopper, come here."
He took out a book.
On the cover were bold words:
"Thirteen Guardian Body: Beast Adaptation Edition"
"This is…?"
Chopper's eyes widened as he shuffled closer.
"Your body is different from humans. You have multiple forms."
Ronan crouched down, gently patting his fluffy head.
"I modified this specifically for you."
"If you master it…"
"Even your medical skills will be supported by an indestructible body."
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