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

"That's great!"

Roy muttered to himself.

He could feel as if several unexplored "springs" had appeared deep within his body.

It contains vast amounts of energy of various natures, waiting to be discovered and guided.

This is the potential of the fused bloodlines.

"Captain Roy, you're awake!"

Behind the observation window, a researcher exclaimed in surprise, then pressed the communicator.

"Notify the Doctor, Captain Roy has awakened!"

A few minutes later, Dr. Gracia strode in, holding the latest test report in his hand, his face full of smiles.

"Congratulations, Captain Roy! The transplant was a complete success!"

All optimized bloodline factors have been 100% fused, with no rejection reaction whatsoever!

Your current physical constitution, theoretically speaking, has already surpassed the limits of ordinary humans, reaching the level of a 'special race'!

"You will need to test the specific improvements later to find out."

But one thing is certain: your stamina, resilience, defense, and strength foundation will all be significantly enhanced.

Moreover, with further training, the special traits of those bloodlines will gradually emerge.

Roy nodded and stepped down from the platform.

After adjusting to his seemingly more "sensitive" body, he asked.

"Where's Kaido?"

"Captain Kaido is undergoing a transplant, and the process is going smoothly; he is currently in the middle of the fusion phase."

It is expected to be completed by tomorrow morning.

"Okay. I'll go out now, so as not to disturb you. Doctor, thank you for your hard work."

"It's what I should do!"

Dr. Gracia solemnly said,

"It is my honor to witness and participate in such an evolution of life!"

Roy changed into the clean clothes that had been prepared and left the core laboratory.

When his figure appeared in the outer passage of the base, Barrett, Hawkeye and others who were waiting there immediately surrounded him.

"Roy! How's it going?"

Barrett looked Roy up and down, his eyes sharp as knives, as if trying to see something different.

"It feels great."

Roy smiled and patted Barrett's arm.

"My body feels much lighter, and my strength is more concentrated."

We'll have to wait for the tests to know the specifics.

But one thing is certain: the doctor's technique was successful.

Upon hearing this, everyone's eyes lit up with excitement and anticipation.

"Captain, do you have any particular feelings? For example...?"

"Want to breathe fire? Or suddenly become stronger?" Enel asked curiously.

Roy chuckled.

"It can't be that fast."

"The doctor said that these are 'potentials' that need to be awakened through training."

It's like giving you a better sword blank; to forge it into a divine weapon, it still needs countless hammer blows.

He looked at the crowd.

"Please wait patiently."

Once Kaido and his crew have finished and everything is stable, it will be your turn soon.

During this time, maintain your fitness and be well-prepared.

"Yes!" everyone responded in unison.

Roy returned to the main island palace but did not immediately begin intensive training.

Instead, they first engaged in some simple adaptive activities and carefully observed every subtle change in their bodies.

He discovered that his five senses seemed to have become more acute.

The cries of seagulls in the distance, the shouts of port workers, and even the movement of dust particles in the air became clearly audible.

The control over one's own muscles, bones, and blood has reached a new level, almost microscopic.

He tried to draw upon the fire-like energy hidden deep within his body.

At first, he could only feel a warm sensation in his chest, but as he concentrated,

Guided breathing, a faint, almost invisible, pale golden flame actually rose from his chest!

The flame had no heat, seemingly illusory, yet it was truly real.

"As expected... it has already begun to sprout." Roy extinguished the flames, realizing the truth in his heart.

The awakening of this potential may happen faster than he imagined.

Roy walked to the training field,

A gravity field was set up for basic physical training using only physical strength.

Push-ups, squats, running, sword swings...

Sweat quickly soaked his clothes, but Roy didn't feel tired at all; instead, he felt a sense of exhilarating comfort.

Muscles recover incredibly quickly after exercise; the slight soreness that just started disappears almost instantly.

"Amazing resilience... and this is only the beginning." Roy was full of anticipation for the future training.

……

The next day at noon, Kaido's loud laughter once again echoed throughout the research base.

He also completed the transplant and successfully regained consciousness.

Unlike Roy's reserved nature, Kaido's behavior after awakening is much more "flashy".

He rushed straight to the test field outside the base, looked up at the sky and roared, the sound shaking the clouds apart.

Immediately, he faced the giant alloy target used for testing, without using Haki or Devil Fruit abilities, and simply threw a punch!

Boom!!!

With a loud bang, the solid alloy pillar that required Barrett's full strength to leave a fist imprint on...

It was so badly dented and deformed by Kaido's punch that even a tiny crack appeared in the center!

"Ooh lol lol lol!!! Awesome!!!"

Kaido looked at his fist, feeling the seemingly endless power surging within him, and burst into wild laughter.

"I feel like... I could beat ten of my past selves now!"

This is certainly an exaggeration, but his significant improvement in physique is undeniable.

Jhin and Quinn also completed their transplants in the following two days.

The flames of the embers became more concentrated and profound, their color shifting from orange-red to dark gold;

Quinn discovered that his mechanical modification interface had a higher compatibility with his body tissues, and the upper limit of energy output he could withstand had increased.

Thus, the first batch of bloodline transplants was a complete success!

It is highly effective and has no serious side effects!

When the news spread, the core members of the entire Roy Pirates were thrilled.

With Roy and Kaido's joint decision, the second batch of transplant recipients was quickly finalized.

On Roy Pirates' side, the priority combat order includes Bullet, Hawkeye, Tesoro, Crocodile, Kuma, Kyros, and others;

On the Beasts Pirates' side were Jack, Ulti, Page One, and other members of the Flying Six.

The transplantation work proceeded in an orderly manner.

Beehive Island has entered an era of "evolution" for all its inhabitants.

After all of Roy's crew members had undergone bloodline transplants

Roy also had Barrett, Hawkeye, Tesoro, and Crocodile select a group of loyal subordinates to undergo bloodline transplantation.

Roy naturally couldn't treat his rank-and-file combatants and officers the same way he treated his core partners.

A top-tier, perfectly integrated "optimized bloodline transplant" that consumes massive resources.

Not only are they costly and time-consuming, but more importantly, they involve issues of trust and controllability.

His core partners are his family, who have fought alongside him, gone through trials, and share a common goal and deep bond.

Even the most loyal combatants under his command need to undergo a longer period of observation and selection.

However, the physical improvement brought about by bloodline transplantation technology is real.

If this technology could be extended to the core members of the crew, it would undoubtedly greatly enhance the overall combat strength of the Roy Pirates.

Thus, these selected members, like the experimental subjects sent by Kaido, began a simplified version of bloodline transplantation.