Penniless man died and reincarnated in the world of Naruto. But he becomes Roronoa Zoro from One Piece instead. Living his new life in the dangerous world with his swordsmanship talent. How will his life goes? Read chapters ahead in p@treon

After a final battle with Sasuke, Itachi Uchiha awakens in the vibrant city of Water 7 in the One Piece world. Meeting Iceberg and learning about the city's shipbuilding fame, Itachi soon encounters the Straw Hat Pirates, led by Monkey D. Luffy. Intrigued by this new world, Itachi joins the crew, bringing his Mangekyo Sharingan and ninja skills to their adventures. Together, they f

Returning home stronger than he had left, Izuku no longer fits in the world he once called home. Both heroes and villains view his power as a threat and work to remove him. Faced with bending himself to his world's norms or breaking them, Izuku embarks on his journey to become the number one hero, while a world-ending disaster lingers in his shadow. Sequel to IMEA.

After being transported to a world where Marines and Pirates fight on the sea, Naruto joins the adventures of the Straw Hat Pirates. Let's see what he gets up to. Rated M to be safe. Naruto/Harem. NOW IN WANO!

What happens when events deep in the Department of Mysteries on Halloween 1988 causes changes that will bring both the Magical and Muggle worlds into the new era, an era that Harry will fight to thrive in as threats new and old arise as a result of the eras new powers, known as Devil Fruits.

Mario thought that today he'd only eat cake with the princess, but bet he was wrong! he believed this was just poor luck, but little did he know that this was the beginning of a huge adventure. rated T for violence, swearing, and stuff!

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Now that Connors secret has been relieved the Straw Hats continue their adventures, but will he stay with them? With the East Blue behind them and the Grand Line in front of them the journey to find One Piece continues. -The Sequel to Straw Hats Creed-

Naruko Uzumaki is the granddaughter of Vice Admiral Garp but was trained by Admiral Akainu

"Destiny. Fate. Dreams. So long as people cling onto these words? They shall not vanish." A new age of heroism begins when two children are lost at sea and wash ashore, befriending others like them and moving the change the world no matter what. Rated for Bakugo language. TVTROPES page underedo! FINAL REVISONS DONE!

what if luffy died at the end of one piece and was transfered into a new Original world of mine to defeat a certain man. What if luffy was in an isekai. luffy is the only non original character in this story and this is a story based on luffy fans if you want one with other characters please tell me. (Mention of rape so if you feel uncomfortable in the subject don't read)

An Arisaka employee gets predictably backstabed, events play out, leading said employee Alex to get isekaied into the Naruto verse with some advantages.

What if Ace was raised by Rayleigh instead of Garp? What if Ace grew up hearing about Roger's adventures rather than how he shouldn't have been born? Roger decides that in order to give his son the best chance at becoming Joyboy, he will entrust his future to Rayleigh and Shanks. (AU, Harem-crew, Gum-Gum Fruit Ace, Anime X-Overs)

Una serie de eventos ocasiona que All Might decida aprovechar la llegada de unos piratas del pasado para realizar un viaje hacia las ruinas de la Gran Linea.El joven grupo de héroes involucrados se entera de sus planes decidiendo traerlo contra su voluntad quedando a merced del tempestuoso mar, obligándose a cooperar con los piratas, descubriendo así en el camino...Un mundo perdido

Percy is sent to Tartarus by Zeus for daring to ask the gods to swear an oath on the River Styx. To stop another war from breaking out, Zeus agrees to send Percy on a quest to 'earn' his freedom. Percy agrees and finds himself in another world with only one way home; Find the One Piece!

Naruto and Sasuke wake up as little kids in another universe with knowledge and wisdom they normally would not have and have a tailed beast that they didn't originally have, why are they in the One Piece universe, and what will happen now that they're there this is an Au Harem story.

El mundo es un lugar enorme, que está repleto de islas como de misterios que nadie puede cuantificar, pero el mar es el único que vio cómo fue creado y es el único que sabe cómo terminará. Mientras permanezcamos en este mundo, el mar siempre nos mantendrá conectados. [Sinopsis completa adentro]

When a secret organization makes its move Naruto of the Ninja World and Luffy of the Straw Hat Pirates and their friends must unite to take out this evil group The longer they're together the more the horrible truth of the relationship between the World Government and Ninja World becomes clearer and on top of that the leader of this organization knows them all personally.

Mario and Luigi are on a multiversal adventure to find the missing power stars. Will their actions have dramatic changes to these worlds and will it have unforeseen consequences. Only time will tell.

Grand Jipang is welcoming a famed Summoner to the city where he'll protect it along with Boss Luffy. As the Summoner adjusts, Nobles will be on the hunt for him and his new friends.

(Inspired by The Crimson Yinglet stories) After a conflict that caused the Power Stars to be transported to other universes, it is up to Mario, Luigi and his friends to find them. New friends and foes will come, but they all will learn a very important lesson: These plumbers are NOT like the others! Arc 1: One Piece

What if Frisk from Undertale went to the world of One Piece? See what happens as Frisk goes on a new adventure!

Et si certains personnages de One Piece se retrouvaient réincarnés dans le monde d'Harry Potter ? ou plutôt... Usopp ne pensait pas qu'en se réincarnant il garderait tous ses souvenirs ni même qu'il finirait par jouer le rôle d'un sauveur pour le monde sorcier. Publié aussi sur ao3.

Heavy One Piece Au-SI: Due to the desires of a Goddess, Monkey D. Reina replaces Monkey D. Luffy as the protagonist in a much harder setting, and with fists of lightning and her massive Futa Cock, she shall dominate the seas. SI/Harem, Tags: Futa, Harem,

The Straw Hat Pirates are blasted into another adventure, this time through the periling world of Sand Land! In a desolate land filled with storming politics, demons, angels, and monsters as far as the eye can see; will this pirate crew be able to help their new friends overcome it all? "It's not my problem? Of course, it is! We're friends, aren't we!"