In a world of Devil Fruits and Haki, a new power has awakened. When the might of Marvel's greatest heroes is placed in the hands of a child bent on revenge, the Grand Line will never be the same. Riven, a young survivor with a two-billion Berry bounty, has declared war on the World Government. Backed by an army of resurrected legends and armed with powers the world has never seen, he will carve a path of destruction straight to the One Piece. But will this new power save the world, or shatter it?

After dying in his sleep, a modern-day anime fan isekai as a child, crewless Monkey D. Luffy. No crew. No Haki. No Gum-Gum fruit... yet. Just pain, awkward child limbs, and a system that turns life into a grindfest. Then the Partner System kicks in. To grow stronger, Luffy has to power up others first, because apparently being the main character wasn't hard enough. Each buffed-up partner boosts his own stats and unlocks powers from across the anime multiverse. Fairy Tail magic? A one-hit kill blade? A soul-cutting sword that speaks? Absolutely. Now armed with grindable friendship, hellish Garp training, and a suspiciously game-like UI, Luffy's ready to recruit his way to Pirate King. A dark, reimagined One Piece universe.

Everyone knows that luffy have 2 older brothers Ace D Portgas and Sabo But what if luffy had another brother (Y/n) Natsu D (l/n) who is 1 year older then luffy. And he is the only brother who didn't eat The Devil fruit but still have a very strong ability.

Y/n who has been reincarnated in the chaotic world of One Piece knowing everything that is to happen. I do not own anything except the plot.

Y/N meeting the strawhats a life changing moment Will there be love or ships we may never know 😉

(One Piece x Female! Reader) (The reader in this story has a set body shape, but everything else is left ambiguous) Reborn in the stars, time and time again, her knowledge and power has made the world government feel threatened just by her existence. With the passion of fire, grace of the wind, beauty of the water, and power of the earth, she vows to make him the King of Pirates.

Meet Nico Kai, the son of Nico Robin. At a young age he was taken by Crocodile and used to force Robin to work for him. Years later he is free and now searching for his mom. What will happen when this boy witnesses the crazy world of One Piece.

Y/n is the adopted older brother of Monkey D. Luffy. Before he became Luffy's adopted brother Y/n had a dark past. When he was just a little boy his parents were killed by a marine but not just any marine the admiral Akainu. Now he has the burning rage of revenge, he swore to get stronger and revenge his parents. So he and his brother both wanted to become pirates to achieve their goals. Since Y/n is one year older then Luffy he set sail a year before him and told Luffy to meet him at the Grand Line so he could join his crew. Read to see Y/n's long journey to revenge. *I do not own One Piece it all belongs to Eiichiro Oda*

What if Luffy wanted to be a marine instead of a pirate?

What if Luffy snuck on Shanks'boat while they were going to Elegia? What if Luffy grew up with Uta? What if they agreed to become co-captains of their own crew? What if they were both trained by Shanks? All these questions will be answered. This is the story of the greatest pirate duo ever! This is the story of The New Era Pirates!