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

Remaining in the stadium:

Roy, Barrett, Hawkeye, Tesoro, Crocodile, Kuma, Kaido, King, Queen, Yamato (barely holding on).

"50 times!" Roy's voice echoed in the gravity field.

Boom! ...

This time, even the alloy walls at the edge of the field groaned under the strain.

50 times the force of gravity!

Yamato let out a muffled groan, finally unable to hold on any longer, and knelt down on one knee. Ken inserted himself into the ground to support his body.

"I...can't go on..." she gasped for breath, but her eyes were full of resentment.

"Yamato, step back," Roy commanded.

Yamato struggled to climb to the edge, where the gravity was adjusted to 40 times.

She immediately felt much more relaxed, but the pressure was still immense.

Nine people remain in the arena.

Tesoro's entire body crackled with golden arcs of electricity, stimulating every cell with lightning to forcefully maintain his movements.

Crocodile's body has begun to partially turn into sand in an attempt to reduce the burden of weight.

The dark gold flames around Jin fluctuated violently, seemingly resisting gravity.

Xiong, a special member of the Bakania tribe, was also sweating.

Quinn's cyborg body emitted an overloaded hum.

Hawkeye stood as straight as a pine tree, holding Black Blade Night, but the ground beneath his feet had already caved in.

Barrett and Kaido were the most outrageous – not only were they standing ramrod straight, but they were even trying to spar!

"Hehehe! 50 times gravity! That's more like it!" Kaido laughed wildly and punched Barrett.

Barrett neither dodged nor avoided the punch, and met it head-on.

boom!

The fists clashed, creating a surge of air, but the movements were noticeably slower than normal, yet the power transfer was more solid.

"Again!"

"You think I'm afraid of you!"

The two battle maniacs engaged in a clumsy yet powerful hand-to-hand combat under 50 times gravity, with each punch shaking the ground.

Roy watched this scene with a sense of satisfaction.

The fact that they could maintain this level of combat strength under 50 times gravity shows that Bullet and Kaido's physiques have reached a terrifying level.

As for himself...

Roy was sensing his body's condition.

He remained completely at ease even under 50 times the force of gravity.

The improvement brought about by optimizing his bloodline is comprehensive, and with the assistance and regulation of the Mind-Mind Fruit, he feels that he can withstand even greater things.

"So... 60 times!"

Om-! ! !

Gravity spikes again!

This time, even Tesoro and Crocodile's expressions changed drastically.

The arcs of electricity around Tesoro began to flicker erratically, and his body trembled slightly.

The sandy parts of Crocodile began to collapse uncontrollably.

"60 times...that's my limit," Tesoro said through gritted teeth.

"Me too." Crocodile's face darkened, but he had to admit it.

"Me too!" Xiong chimed in.

"Step back." Roy nodded.

The three retreated to the edge, where the gravity was adjusted to 50 times. The pressure was still immense, but much better than 60 times.

The remaining characters on the field are: Roy, Hawkeye, King, Queen, Barrett, and Kaido.

Quinn's mechanical body was emitting a piercing alarm, and sparks were beginning to fly from some of its joints.

"60 times... the mechanical structure is nearing its limit..." Quinn's face was grim. "I'm retreating!"

The dark golden flames surrounding Jin had compressed to a thin layer on his body. He remained silent for a moment before speaking.

"60 times the strength, I can barely stand, but I can't train. I'm quitting."

The two men withdrew.

The remaining four people on the field are: Roy, Hawkeye, Barrett, and Kaido.

Hawkeye held Black Blade Night, fine beads of sweat appearing on his forehead, but his eyes remained sharp.

"60 times the force of gravity allows you to swing a sword, but not at full power. Suitable for basic swordsmanship training."

"I can train here."

Barrett and Kaido continued their exchange of blows, their movements becoming slower but each strike more concentrated.

"70 times!" Roy increased the speed again, wanting to see the limits of these two.

boom!!!

The moment the force of 70 times gravity descended, Barrett and Kaido froze in their tracks!

Their fists were locked in mid-air, their muscles trembling violently, and their veins bulging like earthworms.

The ground beneath their feet suddenly exploded, and the two of them sank half a meter underground!

"Ugh... ugh..." Kaido gritted his teeth, trying to push his fist forward, but his arm trembled violently.

Barrett also had a ferocious expression, with all his muscles bulging to the limit.

Three seconds later—

boom!

Both of them collapsed under the weight of gravity, kneeling on one knee and gasping for breath.

"70 times... that's the limit of the battle..." Barrett said, panting heavily.

"I can barely fight, but... it's too strenuous..." Kaido also panted.

"Alright, then your training gravity will be set at 60 times, and occasionally try to push the limit to 70 times," Roy decided.

He looked at Hawkeye: "Mihawk, what about you?"

"60x, suitable for basic swordsmanship training. 70x, only allows standing, unable to wield a sword," Hawkeye replied calmly.

"Then 60 times."

Finally, Roy also chose to begin training under 60 times the gravity.

The enhancements from optimized bloodline, combined with the subtle adjustments to gravity provided by the Mind-Mind Fruit, all contribute to this improvement.

This allows him to withstand pressure far exceeding that of ordinary people.

hum-

Gravity returned to normal, and everyone immediately felt a lightness in their bodies, as if they were about to float away.

"This is the limit of everyone's ability to adapt to gravity."

Roy concluded,

"For the next three months, we will undergo brutal training in this trial ground."

Each person trains under their own limits of gravity, unlocking their bloodline potential.

He looked at everyone, his gaze resolute.

"In three months, we'll take our strength to the next level!"

"Yes!" the crowd responded in unison, their eyes burning with fighting spirit.

Three months passed in the blink of an eye amidst the relentless, day-to-day training.

Inside the gravity test arena, every day is filled with sweat, panting, and the clanging of metal.

Under the immense pressure of gravity, the powerful members of the Roy Pirates and the Beasts Pirates are undergoing grueling training.

Barrett and Kaido, these two battle maniacs, truly embody the belief that "fighting is the best form of training."

The two fight for at least eight hours a day under 60 times gravity, with every punch landing hard and showing no mercy.

At first, they also needed to control their strength to avoid serious injury.

However, as time went on, the two discovered that the restorative power gained from optimizing their bloodline was extremely astonishing.

Ordinary skin injuries can stop bleeding and scab over in a few minutes, but serious injuries like fractures...

With proper medical care, you can recover completely in one or two days.

As a result, the battle intensified.

"White Tiger - Overlord Fist!"

"Thunderous Eight Trigrams!"

boom--!!!

The full-force collision under 60 times gravity caused shockwaves that even shook the alloy walls of the entire testing ground.

After three months, both Barrett and Kaido clearly felt that their control over their power had become more precise.

Their explosive power is greater, and their endurance has reached an unbelievable level.

Even after ten hours of continuous high-intensity combat, it can still maintain 80% of its combat effectiveness.

Hawkeye, on the other hand, honed his swordsmanship fundamentals under 60 times the force of gravity.

Every sword strike strives for perfection: speed, angle, power, timing... Under the pressure of gravity, any slight flaw will be magnified.

Three months later, his sword became more concise, efficient, and deadly.

"How fast would a sword that can be perfectly swung under 60 times gravity be under normal gravity?"

Hawkeye occasionally ponders this question, but he's in no hurry to verify it—the more solid the foundation, the higher the potential for the future.