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

That day, Roy gathered everyone together.

"Next comes the final training."

Roy held up one index finger. "Someone once said that this is combat, non-stop combat."

"I will use peas to rapidly ripen food, attracting sea kings. This mission will be called 'Island Defense'."

Yes, the seeds brought from the Boeing Islands (Baron of the Stomach) after the peas had cultivated their little garden.

After the peas mature quickly, they also become very attractive to sea monsters.

A year ago, after Roy discovered this, he asked Pea to study food seeds in order to make them more attractive to sea kings.

"A good plan."

Barrett crossed his arms. "I can't wait!"

Pea nodded, took out a handful of seeds from her storage bag, and pressed her hands to the ground.

The entire island began to tremble violently, and countless strange plants sprouted from the ground, emitting an alluring fragrance. These plants, cultivated through the second generation, had a fatal attraction for the sea kings.

"Alright... everyone in position!"

Roy leaped to the highest point of the castle, while the islands floating in the sky and the seawater slowly receded into the sea.

"Barrett, you're in charge of the east coast! Tezzolo, Stella, and Savi, you're in charge of the west! Mihawk, the south is yours! Pea and I will handle the north!"

"Remember, this time we're honing our dominance."

"Yes, boss!"

After everyone agreed, they each went to their assigned areas.

"Boom!"

The sea began to churn, and dozens of sea kings that had been lurking in this area were drawn to the island from all directions by the fragrance.

Its massive size, comparable to a small mountain, creates towering waves on the sea with every tumble.

"They're here!"

Barrett roared, his Armament Haki covering his entire body, and charged directly at a giant octopus that had landed. His fists whistled through the air, and each strike left a dent on the octopus's body.

On the west coast, Stella used her magnetic field combined with her Observation Haki to predict the Sea Kings' movements, while Tesoro and Savi engaged in close combat, unleashing the Six Powers Secret Techniques and physical techniques in succession, along with their Haki. The group managed to defend the west coast flawlessly.

In the south, Hawkeye's fighting style was the most elegant. Each strike left a deep, bone-revealing wound on the Sea King's body. Combined with his Observation Haki, he seemed to be handling the Sea Kings with ease.

north coast,

As Roy and Pea arrived at the shore, several sea kings leaped out of the water as the waves surged, including a giant sea king that was over a thousand meters long.

Roy patted Pea's head and took the 'Frost' that Pea handed him.

"Pea, use your vines to restrict their movement!"

"Okay, Roy."

Pea nodded, and countless vines burst forth from the ground, weaving a towering net behind him. With the resilience of these vines, even the power of a sea king would not be able to easily break them.

Roy's eyes sharpened, and Armament Haki flowed over the blade like water as he leaped into the air.

The frost in his hand sliced ​​through the sky, and a crescent-shaped slash flew out, directly hitting the eye of the giant sea king.

"Roar~"

The injured sea king roared in anger, the pain in its eyes causing it to shake its head wildly, its massive body twisting and turning, which made the surrounding sea kings even more ferocious.

Seeing this, Roy smiled and rushed forward, unleashing a series of abilities: swordsmanship, Haki, gravity, and mental shock, which directly immobilized the giant sea king, rendering it unable to move.

Barrett on the East Coast laughed heartily, "Too weak! Isn't there anything stronger?!"

Barrett was riding on the head of a sea king, his iron fists raining down like raindrops.

Over the past three years, his Armament Haki has reached a new level, capable of causing internal damage.

This skill is currently only mastered by Roy and him; among the others, only Hawkeye is still a little lacking.

As Roy's mental strength grew stronger, he developed his Observation Haki to the point of being able to foresee the future. Although it only lasted for a few seconds, Roy was already very satisfied, after all, he was only fifteen years old.

"Six Styles Secret Technique: Maximum Wheel!" x2

Tesoro and Savi simultaneously unleashed the Six Powers Secret Technique, sending a Sea King flying back into the sea, while Stella restrained it from the side. Their teamwork became increasingly refined.

Hawkeye, to the south, was completely absorbed in comprehending the way of the sword; the black sword Yoru seemed to come alive in his hands.

Each slash carried the will to sever everything; with each strike, the surrounding sea kings were wiped out.

"Almost there...but almost there!" Hawkeye muttered to himself, his eyes gleaming.

The battle lasted for five days. When they had slaughtered all the sea monsters in this area, the sea surface was stained red with blood.

The group gathered in front of the castle. Although they were all injured, their faces were filled with the joy of breaking through.

Seeing everyone's condition, Roy nodded in satisfaction.

"It seems everyone has gained something."

Barrett flexed his wrists, seemingly still enjoying himself: "It's a pity these sea kings aren't strong enough, and there aren't enough of them."

"Don't worry, I'll beat you until you're sick of it."

Roy walked up to Barrett with a smile and patted him on the shoulder, teasing him.

The next day, after discussing the next plan with Saga, the group flew off into the distance under Roy's control.

------------

One year later, on an uninhabited island deep in the doldrums...

Roy and his group stood on the shore, gazing at the sea before them, stained crimson with blood.

Hundreds of sea monster carcasses floated on the surface of the sea, creating a horrifying scene.

"The three thousand two hundred and tenth head."

Tesoro stood beside the carcass of a sea king, his voice filled with astonishment.

"This is the eighth super-large sea king killed this month."

"Haha~ That's more like it!"

Barrett jumped off the Sea King's corpse, came to Tesoro's side, and burst into laughter.

During that year, they underwent hellish training in the Calm Belt.

Every day, they face hordes of sea kings, constantly pushing their limits on the brink of life and death.

Hawkeye's progress is the most remarkable. His Black Blade Night can now easily cut through the scales of a super-large Sea King, and his swordsmanship has reached a whole new level.

"Everything can be cut," Hawkeye gently stroked the blade, a glint of enlightenment in his eyes. "This is my way of the sword."

Stella's Observation Haki has improved rapidly through countless battles, and she can now sense the movements of creatures throughout an entire sea area.

Savi, on the other hand, had complete mastery of Life Return and could skillfully use both types of Haki.

The peas' abilities also underwent a qualitative change.

The plants he cultivated could grow on the sea surface, forming temporary battle platforms. Even more surprisingly, he had cultivated special plants capable of absorbing the blood of sea kings.

"These bloods contain powerful life energy," the pea explained. "They can be used to cultivate even more powerful fighting plants."

Roy stood on the shore, feeling the surging power within him.

After a year of training, his swordsmanship has reached the pinnacle of swordsmanship. The combination with his Devil Fruit ability has made his swordsmanship even more unpredictable. The next step is to fight against even stronger opponents in order to break through to the level of a great swordsman.

His fruits have covered the entire sea area, and his mental power has reached an unprecedented level.

"It's time."

Roy turned to face his companions.

"Our training is complete. Now, it's time to let the world witness the strength of the Roy Pirates."