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One Piece: Shinobi of the Sea

Kora_Joshua
14
chs / week
The average realized release rate over the past 30 days is 14 chs / week.
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Synopsis
Rokuro died saving a girl and was reborn in the One Piece world, gaining a bizarre power: by fishing, his body and skills grew stronger. Using sealing scrolls, he stored weapons and gear like Alvida’s iron mace and ninja tools. After meeting Luffy, Rokuro joined the Straw Hat crew, blending in with his odd mix of ninjutsu and fishing-based techniques. Though not the strongest, his unpredictability and humor made him a perfect fit. Between battles, he enjoyed quiet moments—fishing with Usopp, cooking with Sanji, or sparring with Zoro. In a world of chaos, Rokuro brought peaceful absurdity.
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Chapter 1 - CHAPTER 1

East Blue — the sea of beginnings.

The morning breeze rustled the palms gently as the sun rose above the turquoise waves. Foam crested the ocean in delicate curls, whispering along the white sands of an uninhabited island. Amidst the rhythmic sound of nature, a young man stirred.

On a mossy clearing surrounded by wild hibiscus trees, Rokuro slowly opened his eyes. His memory was fragmented, but he remembered a moment — the screech of tires, the rush of blood, and the face of a child he shoved out of danger.

"…Am I dead?"

His voice cracked as he sat up, staring at a sky too blue and a forest too vibrant to be anywhere near his old world.

"Is this heaven?"

[This is both heaven and not heaven. Perhaps it's paradise… for a fisherman.]

The voice echoed directly in his mind.

"What the hell?!"

[I am the Heaven System. Your act of self-sacrifice caught my attention, so I brought you to this world.]

"System? Did I just… transmigrate?"

[Haven't you dreamed of this happening countless times, between boring commutes and daydreams at work?]

Rokuro blinked. It was true — he used to joke that if he died tragically, he better wake up in a fantasy world. He never thought the universe would take him seriously.

"Wait… what world is this?"

[This is the world of One Piece. The sea of adventure. The protagonist is Monkey D. Luffy.]

Rokuro froze.

"The One Piece world?! As in the Luffy, Zoro, Grand Line, Yonkō One Piece?!"

[Correct. A world of Devil Fruits, Haki, and endless oceans.]

Rokuro's heart skipped a beat. He was just a normal office worker — an orphan who barely scraped by. But now… now he had a chance. A system. A second life.

"Okay, let's go! What abilities do I get?"

[This system is omnipotent — but you're not.]

"…What?"

[You're not the chosen one. You were randomly selected. Consider this divine recycling.]

"You're kidding me."

[However, the Paradise System will assign you three abilities based on your earthly 'hobbies' — and integrate them to enhance your survival in this pirate-infested world.]

Rokuro sighed. "Only three?"

[I'm a busy system. You want more, earn it. Initiating ability extraction…]

[Gold… Gold… GOLDEN LEGEND!]

Three golden cards manifested in his mind, emitting an obnoxiously bright light that made him cover his eyes.

Congratulations! You have drawn the following:

Profession: Fisherman

You gain the Supreme Big Fast Rod — a multifunctional, energy-conducting, retractable fishing rod that never wears out. Training through fishing will increase your physical strength. No limit cap. Yes, it works like a cheat.

Ability Template: Uchiha Itachi (from Naruto)

You possess all of Itachi's dojutsu, bloodline, and ninjutsu traits, starting at 10% power. Chakra pathways unlocked. Some memory restrictions apply — sealed techniques will be unlocked as your physical and mental stats improve. Amaterasu may burn ships, use with caution.

Summoned Beast: Pokémon — Murkrow

This mischievous Dark/Flying-type Pokémon lays 10 unique bait items per day. The baits enhance your fishing yield and spiritual training. Increase your bond with Murkrow to unlock further rewards.

Rokuro stared blankly at the rod in his right hand — black with silver veins, humming with strange energy. In his left arm was a dark-spotted egg, warm to the touch.

[Abilities integrated. System out. Goodbye, insignificant soul!]

"BOOM!"

The voice vanished in an instant with a mental pop — like someone hanging up mid-call.

"…What the hell just happened?"

Rokuro looked at the rod and egg in disbelief. "People are training with swords or Haki, and I'm supposed to fish for gains?! What is this, a gacha life simulator?"

He sighed, half-laughing and half-despairing.

Still… he could feel it. Chakra flowing through his tenketsu. A strange, smooth hum from the rod. His hands buzzed with untapped power. He reached into his mind — some ninjutsu names floated there: Clone Technique, Fireball, Crow Genjutsu — but most were locked away in cloudy memory.

At that moment, the egg in his arm began to tremble.

"Ding! Ding! Ding…"

Rokuro raised the egg instinctively. A bright crack spiderwebbed across the surface.

"Dumb, dumb!"

With a final crack, a small bird-like creature popped out. Black feathers, red eyes, and a crooked yellow beak. Its head was shaped like a pointed hat, its tail resembling a broom.

"Murkrow…"

The Pokémon looked at him with disdain and promptly hopped onto his head, tapping its foot as if judging him.

"Hey! Don't step on my—ouch! Okay! You're the boss!"

"Dumb, dumb!"

Rokuro tried not to cry. "Use Wing Attack!"

"Dumb."

"…I'll take that as a no."

He recalled what the Heaven System said — build rapport with Murkrow to get stronger baits. So, he tried to play along.

"Okay! Okay! We'll go fishing first. I get it."

"Dumb!"

The bird squawked approvingly.

Sighing, Rokuro headed for the shore. The island wasn't large — a few hundred meters wide — but it had clear water, wild fruit trees, and enough fish jumping out of the tide to make his new job viable.

He cast the Supreme Big Fast Rod effortlessly — the line extended like a whip, slicing the sea spray as it sank.

Rokuro settled down cross-legged like an old monk. Meditation… chakra… bait. Was this his new cultivation path?

He was so focused that he didn't notice the creaking of wood on sand behind him.

A ship had arrived — elegant but strange. The figurehead was a swan. Its black sails bore a pirate flag unlike any Rokuro had seen — a skull fused with a heart at its center.

The Heart Pirates.

"Hey! Who are you?"

A voice startled him. Rokuro turned to see several pirates surrounding him. Among them was a young man with shaggy black hair, a sword on his back, and a distinct tattoo on his hand — a crewman of Trafalgar D. Water Law.

Rokuro blinked. "Uh… I'm just here to fish. Do you believe me?"

The pirates raised their weapons. One of them chuckled.

"Fishing, huh? You look suspicious. You got some nerve setting up camp on our island."

"This… is your territory?"

"Yeah," another said. "And since you trespassed, maybe Law'll let us make you his errand boy."

Rokuro looked at the glinting steel, then back at his fishing rod.

He cracked a grin.

"Want me to fish you out a Sea King to prove my worth?"