One Piece: The user of the Nen-Nen Fruit, who overturned the sea.

Three days later, at dawn.

The Ark Maxim and the Beasts Pirates' speedboat sailed away from the treacherous waterfall of Wano Country, one after the other.

Head towards Thor's Isle, towards the entrance to the new world.

The golden ship gleamed in the morning light, while Kaido's fast ship followed closely behind like a ghost, the two ships with very different styles forming a stark contrast.

On the deck, two groups of people each occupied one side.

Most of the Roy Pirates members looked relaxed, while Bullet stood at the bow with his arms crossed, his eyes full of anticipation.

Hawkeye wiped the black blade Night, while electric arcs danced at Tesoro's fingertips.

The fish-man boy Charon popped an E.X. poison into his mouth, then clenched his fists, clearly excited about returning to Thunder Isle.

Stella was steering the ship from the wheelhouse, while Savi, Enel, and Pea huddled together by the railing.

Making faces at the people his age on the Clippers behind him.

Moria, pale-faced from having a large amount of blood drained due to his weakness, leaned against the ship's railing.

Vera, who boarded the ship at the same time, stood quietly behind Roy.

His eyes held a mixture of curiosity and nervousness about going to a new environment.

On the Clippers, the atmosphere was much more serious.

Kaido's massive body occupied the bow of the ship, with King standing beside him, the flames behind him swaying in the morning breeze.

Jack, Maria, Rumti, and Page stood ramrod straight.

Yamato excitedly leaned on the ship's railing and waved towards the Ark Maxim.

"Roy! Wait for me!"

Roy stood on the deck of Proverbs, smiling and waving at her.

Kaido glanced at his daughter and snorted.

"That girl is closer to Roy than to me."

"Miss Yamato has learned a lot from Captain Roy, and she has made rapid progress these past few days," Jin said calmly.

"Hmm...that's true."

Kaido took a swig of his drink and glanced at the young men under his command.

Since being knocked unconscious by Barrett's punch, Jack has indeed been training much harder.

Runti and Peggy Wan are talented, but they need more experience.

Maria… Kaido’s gaze lingered on that tall figure for a moment.

This girl is deep and thoughtful, and her strength is quite good among young people, but she lacks the ruthlessness to fight to the death.

"You all better train hard this time we go to Thunder Island!"

Kaido's voice was like muffled thunder.

"Anyone who slacks off will be personally disciplined when they get back!"

"yes!"

The group responded in unison, with Jack clenching his fists even tighter.

------

The voyage lasted two days.

As they drew closer to Thunder Isle, the clouds in the sky grew thicker and darker, and a muffled rumble of thunder could be faintly heard in the distance.

The concentration of ions in the air increased significantly, causing the hair to stand up slightly.

"We're almost there."

Roy stood at the bow of the ship, gazing at the area on the horizon shrouded in purple lightning.

Even from this distance, one can feel the raging power of nature.

Tesoro took a deep breath, and arcs of electricity involuntarily crackled around his body.

"The lightning here... is more active than when I last came."

Barrett grinned.

"Isn't that even better? The more ferocious the training, the stronger the effect!"

Hawkeye stroked the hilt of Black Blade Night.

"Sever the lightning... Perhaps we can give it a try this time."

Roy clapped his hands, drawing everyone's attention.

"We anticipate staying on the island for quite some time this time, so you should prioritize cultivating 'Life Return'!"

A glint of light flashed in Roy's eyes as he became increasingly adept at 'internal forging' Zephyr's Armament Haki.

The continued development of his Devil Fruit abilities has made Roy's mental strength increasingly powerful.

This time, it might be possible to directly guide others' Armament Haki through the "internal forging" process.

"Roy, have you found anything?"

Aside from Moria and Vera, everyone on the ship, except for Roy, was extremely envious of his mastery of Armament Haki's "Internal Forging."

It can constantly enhance physical fitness and the quality of Armament Haki.

Who wouldn't want to master such a skill?

Roy extended a finger, black Armament Haki coiling around it, gave Barrett a look, and pointed his finger.

"laugh!"

Barrett's Armament Haki-wrapped hand touched Roy's fingertips, producing a soft sound.

Barrett withdrew his hand, looking at the red dot that had appeared in his palm, a hint of surprise flashing in his eyes.

"Roy, your Armament Haki level has increased so quickly!!"

"hey-hey!"

A smug look flashed across Roy's face as he looked at the shocked crowd.

So that's why!

"You should quickly return your lives to your own control, and then I will guide you through the technique of 'internal forging'."

"That way, your cultivation progress can be greatly improved."

"Boss! Can we try it now?" x2

Tezzolo and Savi, who had already mastered the art of Life Return, had their eyes light up; they had made significant progress in their Life Return skills during this period.

"Okay! That works!"

"But let's wait until we get to Thunder Isle to talk about it!"

Roy pondered for a moment. Tesoro and Savi's physiques were clearly not as formidable as Barrett's and Hawkeye's.

Roy wasn't entirely confident in guiding others through "internal training."

After all, this process is extremely dangerous, so we have to try it slowly.

On the Ark Proverb, everyone became highly motivated after eating Roy's "big pancake".

Meanwhile, on Kaido's speedboat behind them, the young members of the Beasts Pirates, seeing Raijin Island for the first time, all showed expressions of shock.

"That's... Thunder Island?"

Peggy Van murmured, even from this distance, he could feel that heart-palpitating pressure.

Runti's face, visible beneath her mask, was somewhat pale. She grabbed her younger brother, Peggy Wan's, arm.

"Hey, feed me...!! Little Pei!"

"Is it really possible to cultivate in a place like this?"

Maria looked up at the area of ​​thunderstorm, her hands unconsciously clenching into fists.

She had heard of the infamous Thunder Island, but it was only when she saw it with her own eyes that she truly understood the meaning of the word "dangerous".

Jack's eyes burned with fighting spirit:

"This is the kind of place... only fit for my cultivation!"

Yamato's eyes widened, and her small mouth slightly opened:

"Wow...that's amazing! Roy, are we really going up there?"

Roy's voice was transmitted to the speedboat via mental power.

"Of course. But remember, everyone must follow the instructions."

"The lightning on Thunder Isle is divided into three areas: the outer layer, the inner layer, and the core. We will adapt to the outer layer first, and then gradually delve deeper according to our individual strength."

"It can be very dangerous to trespass into an area that exceeds your personal capacity."

Roy spoke calmly, yet it sent a chill down everyone's spine.

"Understood!" everyone responded in unison.

The two ships continued forward, and the entire view of Thor Island gradually came into view.

The entire island was bare, with only the deep purple rocks reflecting an eerie luster in the lightning.

At the center of the island, lightning cascaded down like a waterfall, forming a blinding pool of thunder.

Despite the great battle between Roy and his companions and the Golden Lion, the island remained remarkably unchanged.

It is evident how resilient Thunder Island is, having withstood the relentless onslaught of lightning over the years.