Rena led a simple, boring, lonely life until one day she met a being from another world. A Guardian who protects the Realms, and she needs Rena's help to save everyone. She had always wanted to travel the world, but now, she is traveling between worlds. Who will she encounter along the way? Multiple crossovers: Fairy Tail. MHA, One Piece, and more.

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

The last thing Midoriya remembered was being overwhelmed by a crowd of civilians that were being controlled by the third assassin sent by All for One. But suddenly, he found himself in the middle of a bloody battlefield, surrounded on all sides. Whitebeard had no idea who this new arrival was, but he wasn't going to complain as the stranger defended his son from Akainu.

(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

In a world where heroes with extraordinary powers protect society, a young man named Ace, with the mysterious ability to control fire, finds himself thrust into the ranks of heroes-in-training at UA Academy. Struggling with amnesia about his past life, Ace forms friendships with fellow students, including Itsuka, Mirio, and Nejire, as they navigate training, classes, and life.

The Straw Hat Pirates have arrived in a world of dragons, and making friends with Spyro, they embark on a journey together to save the world from evil.

Luz is the new blackbeard

After a final battle with Sasuke, Itachi Uchiha awakens in Water 7 of the One Piece world. Discovering its shipbuilding renown, he joins the Straw Hat Pirates, led by Monkey D. Luffy, bringing his Mangekyo Sharingan and ninja skills to their adventures across the Grand Line. [itachi x robin] .

The Straw Hat Pirates come across a mysterious island in the Grand Line which has been isolated from the rest of the world. There, they meet a young man who calls himself a 'Pokemon Trainer', and throw themselves headfirst into a world-changing new Pokemon adventure.

Instead of summoning a college student with little to no combat experience, Melromarc summoned an infamous pirate captain as their Shield Hero. Armed with a legendary weapon and an innate distrust of any kind of government, how will this newcomer fare in a world where everyone hates him?

She's now the Mistress of Death, she leaves her old world and living on the new world. But she must fight once again, she won't stand seeing people suffering and she will break their chains as she is the Phoenix Queen. FemFutaHarry x Harem.

All vessels are destined to one day break. Alexander the Warrior Jar, passed away in peace comforted by the fact that he lived and died by his warrior creed. His friend, the new Elden lord whom he fought for the last time, gave him his blessings so that one day he'll rise again as the warrior he once was. Elden Ring X One Piece FanFic

"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!

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 has met them all before..

Mew get's pull through a dimensional portal one day, ending up on the same boat as Monkey D Luffy as he sets out on his adventure. The pair quickly bonding over their zest for life. The only result can be chaos. Skirts the border of crack.

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

The Straw Hat Pirates show up at Destiny Islands from Skypiea and meet Sora and his friends. But when the Heartless invade, they are all separated. Now Luffy and Sora must join forces to find their friends, and defeat the darkness. KH/One Piece crossover. Cover image by Kiyomisa on Deviantart.

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!"

What is a monster? We use the term so often nowadays, in so many ways, it's long since lost any meaning. At their core, Monsters are that which evoke horror, and horror is the violation of that which is 'normal'. They are rejected by society, hated, abandoned. How could I hate a child for wanting to be more than 'normal? I refuse! Narutoxharem. Surprising pairing. Read and see!

A Ben 10/One Piece crossover; I woke up this morning with this on my mind, and I had to share it with you all! I hope you enjoy. It's going to be a task I hope you'll enjoy. [Bonus: Ben will have the Ultimatrix (Well an O.C version called the M-Model; He also has the Haki's; all three. but he'll have to get training to access them full time)]

A Crossover Story between Zaru and Juubi-k. As Yamato, Son of Kaido, heals from her wounds from a battle against her tyrannical father, a chance meeting with a injured boy in green opens her world. And that world, will change. The boy's name? Midoriya Izuku. For Questions, refer to FAQ in story(after Chapter 15)

A month after the surrender of the Empire of Japan the American first fleet commanded by Scott Duncan Hazard was ordered to return home to San Francisco and fate says otherwise and sends them to the unknown To the world of one piece where democracy isn't present, freedom shall reign as the land of the free, frees the world Mostly WW2 x One piece with battlefield elements

In this crossover story, the wacky world of Bobobo collides with the adventurous universe of One Piece. Monkey D. Luffy and his crew will meet Bobobo and his team of hair warriors. Together, they must navigate through the zany hair-based obstacles and defeat the evil Hair Hunters. Prepare for some hilarious antics, over-the-top battles, and plenty of hair-raising moments.

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

Reboot of The Delta Saga: Team Natsu, Happiness Charge/Tropical Rouge Precure, students from Academy City, and Symphogear users wound up stuck in a world of pirates. They have to rely on the Straw Hat pirates and an young boy labeled as the Ultimate Plague.