One Piece: Pirate King? I just want to kill all of you

The East Sea, an unnamed island.

A tranquil and serene beach stretched out, seamlessly merging with towering cliffs. Dense jungle covered the cliffs, its foliage casting intricate patterns of light and shadow on the forest floor as the sun filtered through the leaves.

A narrow, man-made path cut through the jungle, leading toward the cliff's edge. Along this path, a tall, powerfully built man with black hair and dark eyes moved steadily forward. Dressed in a short-sleeved shirt and loose-fitting pants, his striking features exuded both composure and strength.

He carried a fishing boat single-handedly, balancing it effortlessly on his arm. Despite the boat being several times larger than him, it seemed weightless in his grasp, as if he bore no burden at all.

Will came to a halt beside a thick, ancient tree. Gently, he placed the boat down beside it with meticulous care. His gaze fell upon the trunk, where three letters were carved: "Ast." Below the tree lay a fresh grave.

His expression grew complicated.

He turned, bent his knees, and slowly sat down, leaning against the tree trunk. Picking up a bottle of liquor placed before the grave, he uncapped it, pouring a small portion onto the ground before taking a deep swig himself.

"Old man, I found you a good spot, didn't I?"

"You won't have to suffer under the scorching sun, yet you're still close enough to the sea. On quiet days, you can sit up here and watch the waves roll in."

"I even brought your boat—the one you spent half your life fishing in—so you won't feel lonely."

"Now you can rest in peace."

Will rested his forearms on his knees, the liquor bottle still gripped in his hand. He spoke softly, as if his words could somehow reach the depths of the grave, whether the one buried there could hear him or not.

When he finished speaking, his eyes flickered with memories. He took another deep drink.

It had been more than two years since he arrived in the world of One Piece.

Once, he had been a martial artist, devoted to the pursuit of combat. His first trip to Southeast Asia for a free-fight tournament had ended in championship victory. From there, he steadily rose through the ranks, eventually becoming the undisputed champion of Southeast Asia's underground fighting scene.

Now, unexpectedly, he found himself a fisherman at sea, reduced to nothing more than a common fishmonger in the eyes of others.

Will's thoughts drifted back to that fateful day. He had been competing in a high-stakes cage match—an ultimate test of his limits. Ten elite fighters, all at once. A battle of pure endurance and skill.

He had fought with everything he had, overcoming all ten opponents. But before he could even celebrate his hard-earned victory, fate intervened.

A stroke of enormous luck—or perhaps misfortune—found him.

Even Southeast Asia has fate's will?

That was his last coherent thought before losing consciousness.

When he opened his eyes again, he found himself stranded on a deserted island.

Before he could even process the situation, a robotic, emotionless system interface emerged in his mind. That was when he realized the reality before him was far more bizarre and complex than he could have imagined.

Thinking back to that moment, Will instinctively opened his system interface and checked his skill panel.

[Skill: Language Mastery]

[Language Mastery: Grants proficiency in the common language of the One Piece world.]

This skill had been one of the system's initial rewards. Because of it, Will immediately understood that he had been transported into the world of One Piece.

Though he had always been passionate about combat, he had also spent his free time consuming battle-related films, series, and anime—including One Piece.

To him, One Piece was an extraordinarily dangerous world. Enormous beasts roamed the land, monstrous sea creatures lurked beneath the waves, and ruthless pirates ruled the open ocean.

Even the so-called enforcers of justice—the Marines—turned a blind eye to the atrocities of the Celestial Dragons, choosing instead to uphold a twisted system of power. Then there were the so-called revolutionaries, whose vague ideals made them just as unpredictable.

In such a chaotic world, even ordinary civilians struggled to survive. For an outsider like Will, the odds were stacked against him.

To make matters worse, he hadn't even possessed the same physicality as the average person in this world.

Luckily, the system's initial rewards included an opportunity for Body Reconstruction—a process that would enhance his physical capabilities and talents to align with the standards of the One Piece world.

Without hesitation, Will activated the process.

His body underwent a dramatic transformation.

He became taller, stronger, more refined. His physique reached near-perfect proportions, with sculpted, lean muscle rather than excessive bulk. His height surged to nearly three meters, and his powerful legs remained well-balanced—none of the exaggerated disproportions that plagued certain characters in One Piece.

Additionally, the system had detected two natural talents within him, further amplified by the reconstruction process:

[Iron Will – Unshakable Determination]

An indomitable mind, highly resistant to external influence. Exceptional defense against mental, emotional, and spiritual manipulation.

[Born to Fight – Combat Mastery]

Possesses an extraordinary aptitude for battle. Rapidly learns and adapts to combat techniques. Exhibits remarkable stamina and resilience.

After his reconstruction, Will's strength increased dramatically.

He could snap thick tree trunks with a single punch. Crush solid rock with a casual strike. Even the massive beasts inhabiting the island stood no chance against him, swiftly becoming a consistent food source.

Brimming with confidence, Will spent his sixth day on the island cutting wood and building a raft, eager to find civilization.

But he had underestimated the unforgiving nature of this world's ocean.

The moment he set sail, a sudden, violent storm engulfed him. His makeshift raft shattered almost instantly, leaving him to cling desperately to a single piece of driftwood as the sea swallowed him whole.

Had it not been for an old fisherman named Ast, who found him unconscious and adrift, he would have surely perished.

Though Ast never once asked for repayment, Will stayed by the old man's side.

Partly to repay the debt of his life.

Partly to gradually adapt to this dangerous, yet strangely familiar world.

That shipwreck had humbled him, forcing him to acknowledge his own limits. His initial arrogance, born from his newfound strength, quickly faded.

Over the next two years, Will spent his days fishing and selling his catch alongside Ast. Through their conversations, he learned that he was in the East Blue.

In his spare time, he trained relentlessly. Drawing upon his knowledge of combat and the martial arts principles he had once studied, he experimented, refined, and developed new techniques.

And the results spoke for themselves.