onepiece

"With the goal of hunting Celestial Dragons, using dual identities to rise through the ranks at Navy Headquarters, becoming the youngest Admiral in history!" "Sharingan + Ice Release + Devil Fruit - is this viable?" "Navy Admiral" "Lifelong Enemy of the Celestial Dragons" "Ancient Species - Snowfall White Wolf!" "The Navy's Most Handsome in 800 Years!" Borsalino: Compared to that kid, being called monsters makes us ashamed. Sakazuki: I can feel this guy's Burning Justice! Kuzan: My fighting style seems crude and clumsy compared to his... Sengoku: He will be the future of the Navy! A pillar of the Marine forces! (Most importantly, his face alone has boosted recruitment numbers by several points) Garp: I have a feeling... this guy will cause as much trouble as Roger...

Raiver Sky crossed over into the One Piece world and started by consuming the Paramecia Type·Space Fruit, thus becoming a god who controls space.   Many powerful figures' evaluation of Raiver Sky: That year at God Valley, that man was simply terrifyingly strong!   【Space Buoyancy】 makes the space in a designated area weightless, causing objects to float without falling! (Golden Lion: This is my ability)   【Space Gravity】 manipulates the gravity in the surrounding space! (Fujitora's eyes widen in shock)   【Space Oscillation】 releases powerful spatial tremor waves, causing destruction to everything in the vicinity! (Whitebeard: Quite interesting)   【Space Leap】 allows instant short-distance teleportation through will, accurately landing at any designated point within sight!   【Escape into the Void...

Meiser, a mixed-blood descendant of the Uchiha and Senju clans, rose to prominence during the Second Shinobi World War. While on a mission to the Land of Water, he unexpectedly crossed over into the world of One Piece and encountered the sea train heading to Enies Lobby! On this speeding train, Meiser met the boy who carried fate on his shoulders. Luffy: You're a ninja? Meiser: Yes. Luffy: Join my crew! Meiser: Sure... Since I'm here, I might as well settle in. Invited by Luffy, Meiser chose to join the Straw Hat Pirates and embark on adventures with them. Using his powers, he helped his crewmates rescue Robin and save the ship spirit Merry! Merry: Meiser, what's that? Glancing at Moria, Meiser replied: That's a loser who's lost his spirit and only knows how to rely on external things. ...At the Marineford War, a colossal Susanoo wreaked havoc across the battlefield...

Want to live a laid-back life? From the start, he gets a Paramecia-type Devil Fruit, the Sloth Fruit, and becomes instantly invincible! Sleeping on the job? His Observation Haki trains automatically! Slacking off? His Armament Haki maxes out on its own! Conqueror’s Haki? Who needs it anyway! His furious superior, Akainu, roars: “Renzo! If you slack off one more time, I’ll send you to the New World!” Renzo rolls over and mutters: “Fleet Admiral… such a hassle… too far… don’t wanna go.” During the Marineford War, as the world shakes and the sky collapses, he’s peacefully napping beneath the execution platform. A deadly attack sweeps toward him; he turns over in his sleep… BOOM! The attack disappears! Fleet Admiral Sengoku clutches his head in despair: “Quick! Wake Renzo up! Let him finish the fight before he sleeps again!!”

A half-Uchiha, half-Senju ninja crosses worlds and awakens in One Piece. Picked up by Luffy on the sea train to Enies Lobby, he joins the Straw Hats and brings shinobi power onto the Grand Line. When forbidden eye techniques awaken at Marineford… the era of pirates begins to tremble.

Noyer transmigrates into the world of One Piece, is adopted by Bell-mère, and becomes Nami's older brother! He awakens a Talent Copy System that allows him to freely copy any aspect of anyone's talent! What would it be like when Noyer has Shanks' Haki talent, Kaido's physical constitution talent, and Mihawk's swordsmanship talent? Even the abilities of Devil Fruits can be treated as talents and copied by the system! Many years later, Noyer, with talents surpassing everyone in the world, turns the seas upside down. (Slow-burn story, slow development in the early stages, then let loose afterwards)

[Soul Transmigration | The Rocks Era | 53 Years Before Luffy] I transmigrated into the world of One Piece… But I arrived 53 years too early, in the chaotic age of Rocks D. Xebec. No Straw Hats. No Worst Generation. Only monsters ruling the seas. By pure luck, I obtained a Devil Fruit. It looked like a pomegranate, so obviously it couldn’t be something useless like the Human-Human Fruit, right? I thought destiny had finally chosen me. Then I took a bite. Human-Human Fruit. Ranked #1 among the “Three Useless Fruits of Sea, Land, and Air.” I stared silently at the neighbor who ate the Human-Human Fruit and shed tears of sympathy for him. …Wait. Why is his fruit suddenly looking better than mine? Fine. If I can’t become the Pirate King, then I’ll become something even better. The most dazzling man on the seas. From the era of Rocks, through the rise of Roger, all the way to the dawn of the Great Pirate Era— A strange pirate crew begins to spread their name across the oceans. The Jellyfish Pirates. Masters of chaos. Specialists in dealing with every kind of flashy nonsense on the seas. And when their captain finally reveals the true power of the Human-Human Fruit.… The entire world will realize— Even the most “useless” Devil Fruit can become a nightmare for the seas.

He awakened the Multiverse Video System, and from then on, he reached the pinnacle of life. No. 10: Flame Dragon King Natsu. No. 9: The Gentle King, Shu Ouma. No. 8: Glory to Lelouch. No. 7: Naruto Baryon Mod (PS: You can start reading from any chapter.) (Daily Updates!) All Chapters @Patreon.com/cw/Gooberilla, (Please ask if u paid :D)

He shouldn’t exist. In a world ruled by talent, bloodlines, and destiny— he has none of them. Only one thing: A system that makes effort infinite. Train once—get stronger. Train forever—become unstoppable. When he joins the Straw Hat crew, even monsters like Zoro and Luffy don’t realize: They just accepted someone who will one day surpass them all. This is not a story about talent. This is a story about breaking limits until the world itself can’t keep up.

In the swirling currents of time and fate, one soul was cast into a world it was never meant to be in. Karl D. Sephiroth-a name unknown to history, yet one that would soon shake the very foundations of the world. He is not a pirate. Nor a marine. He is a time traveler-an outsider who gained the Batto Batto no Mi Devil Fruit at the wrong time... and in the wrong place. With a power that blurs the line between life and death, Sephiroth seeks only one thing: A peaceful and beautiful life in this chaotic and disordered world of One Piece. But this world does not allow anyone to live in peace so easily. Position? Justice and evil? "The winner is the king... and the loser is just a bandit." In these seas, it is not principles that shape history-but power. Justice and evil are mere concepts... privileges that belong to the victors. And Sephiroth? He has no problem being called a hero, as long as he is the one who wins. Those who have witnessed his existence say: Boa Hancock, Pirate Empress: "Sephiroth... as long as you wish, I will do anything for you!" Kozuki Hiyori, Princess of Wano: "For the sake of our master, Brother Momonosuke... I beg you, die!" Sengoku, the Legendary Admiral: "I could never tell if Sephiroth is a righteous man... or not." Monkey D. Dragon, Leader of the Revolutionaries: "Friend... could you help me revise the revolutionary program of this world?" Sora Cyborg, Supreme Commander of the World Government: "This man... Sephiroth... he is truly insufferable!" And so... begins the story of a man who refuses to follow the tide. A victor who rewrites the meaning of 'justice' with his own hands.

Transmigrated into the turbulent world of shinobi, Ikki found himself thrust into the heart of the bloody Warring States period. He was no ordinary ninja; he had awakened a "system" that granted him the legacy of a legend—an enhanced version of the "Iron Fist," Monkey D. Garp. Unlike the common shinobi whose prime withered with time, Ikki defied the laws of nature. Age was not a burden to him, but a catalyst; the older he grew, the more his monstrous strength intensified. In an era defined by bloodlines and ocular jutsu, he had relied on nothing but his bare, iron-hard fists to beat both the Senju and Uchiha brothers into submission. His intervention brought the chaos of the Sengoku era to a definitive end, earning him the title of the world's greatest "Shinobi Hero" and the undisputed top rank among the Three Great Masters of the age. However, as the era of warring clans transitioned into the age of Hidden Villages, Ikki chose to fade into the shadows. Disillusioned by the endless cycle of conflict between ninja and samurai, he retreated to the secluded back mountains of Konoha. There, he lived as a forgotten relic, an old man whose name had slipped from the pages of history into the realm of myth. Peace, however, was a fragile thing. The Third Shinobi World War erupted with a ferocity that threatened to consume everything. The "White Fang" of the Leaf had fallen to his own blade, and the legendary Sannin were pinned down on foreign fronts, leaving the village vulnerable and desperate. With Konoha standing on the brink of ruin, the village leadership—the council of four led by the Third Hokage, Hiruzen Sarutobi—was forced to make a desperate pilgrimage. They went to the mountains to plead with a legend they had hoped never to disturb. After decades of silence, the Hero of the Sengoku was coming out of retirement.

In a world ruled by pirates, where legends like Monkey D. Luffy chase freedom and the power of Devil Fruits decides fate… He awakened something different— A system that generates infinite Beli. At first, it seemed useless. No haki. No powers. Until he realized… Money can build fleets, buy weapons, and even influence the World Government. While others chase treasure… he creates it. And soon, the world learns one truth— The most dangerous pirate isn’t the strongest… It’s the richest.

In the world of One Piece, a Sky Screen suddenly reveals the future— But every vision is a lie. Buggy destroys the Red Line. Chopper becomes a god. Momonosuke rises… then dies. Impossible futures spread across the seas, yet no one can ignore them. Because what if they’re real? Fear takes hold. Pirates and Marines alike begin to act. Wars ignite over events that haven’t happened. And behind it all— One man smiles. For in this world, a perfect lie doesn’t just deceive… It becomes reality.

Framed and discarded to protect the Navy’s “golden boy,” Leno is thrown into the depths of Impel Down—his six years of loyalty worth less than a rookie’s future. Betrayed by the justice he once believed in, he awakens a terrifying power. He won’t join the Straw Hats. He won’t serve the Navy. He’ll build his own empire. From Vice Admiral to Yonko to Pirate King, Leno rises—crushing Luffy, shattering Garp’s ideals, destroying the Navy, and claiming multiple Devil Fruit abilities. The pawn they sacrificed becomes the king who rules the world. 【No Joining the Crew + Crushing Luffy + Crushing Garp + Destroying the Navy + Building His Own Power + Multiple Devil Fruit Abilities】

“This is the story of The Adventure of a Cat Slave, and of course, a group of kittens.” For 30 advance chapter : patreon.com/DaggerTranslates

[Light screen exposure + Rocks Pirates + True “God Valley Incident” + Weak male protagonist, strong main storyline! ] [Already played through the Summit War of Marineford, Roger ushering in the Great Pirate Era, the Admiral contention, the decisive battle between Whitebeard Pirates and Blackbeard, the strongest enemy “Z”! Operation Z, Red-Haired Shanks' songstress! True God Valley, Harald's death! ] The world-wide light screens descend, the true God Valley Incident is completely exposed, the World Government collectively breaks down! Extending from the Summit War of Marineford to Roger ushering in the Great Pirate Era, from the Admiral power struggle to the fall of the Whitebeard Pirates, from Z's revenge to the frenzy of Red-Haired Shanks' songstress, all the earth-shattering secrets of the future pirate world are laid bare for all to see! The secrets hidden by the World Government are revealed to the public, everything will come to light…… === Advance chapters: patreon.com/ReruoIzayoi

With only one month remaining before the legendary Summit War, Xia Te finds himself mysteriously transmigrated into the most feared prison in the world—Impel Down, Level 6. A place reserved for the worst criminals in history. Just as he struggles to grasp his situation, he notices a half-dead old man chained beside him… only to realize the shocking truth—this is none other than the infamous “Golden Lion” Shiki, a monster once defeated by Luffy himself. Before panic can set in, a cold mechanical voice echoes in his mind— [Sign-in System Activated] [Sign in with Golden Lion Shiki to obtain his full inheritance] In that instant, fate changes. Power, legacy, and a chance to rewrite destiny now lie within Xia Te’s grasp. Two seconds later, with a faint smile, he turns to the legendary pirate beside him— “Old man… lend me your strength.” From the depths of hell, a new storm is about to rise.

(One Piece x Mahoraga OC) [I obviously don't own One Piece and JJK assets or characters, this is just a fanfiction :D]

On his sixteenth birthday, Adam Varen got the Bazaar. A system that sells abilities, drops you into random worlds, and doesn't care if you come back. Everyone gets the same deal. But Adam has something nobody else does: he remembers his past life. Every anime. Every movie. Every world the Bazaar is about to throw him into. He knows how they end. He knows who dies and why. He knows exactly which powers to buy and which worlds to fear. The knowledge is an edge. It is not a guarantee. Because the worlds aren't stories anymore. They hit back. The people in them are real, and the plot doesn't wait for him to be ready. One wrong call and the Bazaar doesn't send a rescue team. It just stops paying out. Twenty-five years ago, something came through from the other side. It killed three hundred thousand people in a week. Humanity built academies, trained Explorers, and started fighting back. Adam is one of them — but he's playing a longer game than anyone knows. That part costs blood. Updates daily. No harem. Smart MC who bleeds. [Tags: Reincarnation, Multiverse, System, Progression Fantasy, Fanfiction, Solo Leveling-adjacent, No Harem, Smart MC, Dark]

I transmigrated into the worst possible world of One Piece: a Celestial Dragon slave, a mermaid hybrid, and marked on my collarbone. But I know that in the West Sea, there is a blue-eyed girl on the run. So when I was twelve, I found ten-year-old Robin, gave her a bag of bread, three Berries, and a sentence she spent her whole life proving: "Knowledge is innocent." Then I turned around and joined the Navy. I was taken away by Vice Admiral Tsuru to become his disciple, trained by Vice Admiral Garp, and nurtured by Fleet Admiral Sengoku. I climbed to the position of general, my hands stained with countless lives, and built my web of power. I thought I could control everything, until the peacock died in my arms. From that day on, something shattered completely. His naval colleagues began privately referring to Admiral 'Cloud Fox' as "the silver-haired mad dog." It doesn't matter. I would rather become a disciple of the Five Elders, the Financial Martial God, and become Im's sharpest proxy, than hide my ambitions and purposes in the vortex. Hancock loves me, Vivi falls for me in a political marriage, Nami says my embrace is the only safe haven, Perona only stops having nightmares in my arms, and Reiju chases me from dreams into reality. But every night, I still touch the burning mark below my collarbone and think of those pale blue eyes in the granary. Robin, wait a little longer. Wait for me, this mad dog, to... tear the old world apart for you.