(Cross Posted on AO3)(Rated M) It's time for Hadrian to return to Hogwarts only this year he has a chamber and a sociopath to contend with. How bad will this year go that he needs to continually hide from his peers and his guard?

Ben Tennyson and his team are in for the adventure of a lifetime when Professor Paradox sends them on a mission to aid the Straw Hat Pirates in finding the legendary treasure One Piece and help Monkey D. Luffy achieve his dream of becoming the Pirate King. But, old enemies plot their return.

Held high as the God of Shinobi in the world of Ninjas and Samurais, Hashirama Senju's powers now traverse space & time to reach the world of Pirates and Marines. A young man from Earth, reincarnated into this world, now had this power that can reshape the entire world. With such powers, he reckoned he had a goal to fulfill. SI, Harem, R-18

Lincoln begins acting strange one day when he finds out that his middle name is D. Things take a drastic turn when Lincoln and several of his friends, family, and associates follow him to the adventure of a lifetime to the Grand Line! Now Lincoln and his ragtag crew set out through the dangerous seas to search for the treasure of the King of the Pirates, the One Piece!

"¿Quién es el más fuerte?, ¡claramente soy yo!", gritan al mismo tiempo un Pirata, un Shinigami, un Saiyajin y un Shinobi. Atrapados en un mundo aparte, estos cuatro universos chocarán ... ni el Big Bang sonó tan fuerte ni fue tan llamativo, como este choque. (Fanfiction sólo me dejó poner dos crossover, pero esta historia es un crossover entre cuatro animes).

A brief little One-Shot about Naruto Uzumaki and Miss Valentine (Mikita) as they carry out a mission as agents of Baroque Works.

Summary: A world where pirates, marines, shinobis, co-exist but are forever divided. Separationism breeds inequality and hostility and the world is in constant strife. But there are rumours of an individual, 'Hidden in the Wind', who can change the very fate of the world, ushering in a time of peace. (Full summary inside)

On a small Island called peach creek three boys are going to go on an adventure that they will never forget. Join Ed: The lovable oaf, Edd: The sockhead genius, and Eddy: The cunning scammer on there quest to set sail on the open sea!

What if the One Piece and the Great Pirate Era really happened, but the evidence was erased? If the most respected person in the world were to discover what the history hides… Would he reveal it to the world even knowing the consequences?

One fateful day Jaune Arc decides he doesn't want to be a huntsman anymore. Instead, he wants to set sail to the Grand Line, find the One Piece, and become King of the pirates. Most of his friends may think he's crazy, but that's okay. At least some of them are willing to join along on his quest.

One piece belongs to Oda and Naruto belongs to Kishimoto. It is a story about Shanks being reincarnated as female Naruto.

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. Re-upload

Luffy & Co. Finally got Sanji back from the clutches of Big Mom, and rush forward Wano too meet up with the rest of the crew. During the trip they get a well deserved break from everything, Luffy suddenly disappears without a trace and the crew panic finding about his disappearance. Meanwhile Luffy is transported too a world where Demons and Demon Slayers exist.

When Jaune Arc was kicked out of Beacon, he had no idea what to do. However, when Monkey D. Luffy gives Jaune an offer to become a pirate, Jaune takes. Along their journey, Jaune and Luffy set for wealth and adventure in order to find the elusive One Piece. Look out Remnant! The Straw hats are coming.

Jump into the fun as Straw-Hat Pirates Luffy and Zoro travel to a new world to stop an evil Warlord from taking over the world

"You really want to go through with this? I'm a confident medic, but even I'm not sure what will happen here." "Oh come on, just get it over with!" Never been the best at thinking things through, but I haven't come to regret this, and hopefully won't.

When Luffy went to Impel Down to save his brother, he met the strangest guy ever, who decided to help him out just for the hell of it. Watch as the world is turned upside as the stranger named Danny joins Luffy on his journey. Disclaimer: I don't own anything. Rated T for blood, swears, harems and innuendos. No lemons, but there will be mentions of them.

There are many universes which contains different powers and people in multiverse. One day a mysterious guy named Zenex invited people from these universes to his tournament. Can someone from our heroes can win this tournament or is there a darker secret behind all of this?

After the events of Egghead Island, the straw-hat pirates have the mission to take Dr. Vegapunk with the Revolutionaries, but someone gets in their way. Meanwhile, in the outskirts of U.A. academy, the principal of the school along with one of the teachers see their walk interrumpted by an...unexpected visit. Hints of Eraserhead x President Mic Pairing. Nothing rated above K

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

Esmeralda, 18, lives with her father in South Central Los Angeles, California. She and her father are poor but work to get by. One day, she meets playboy Sosuke Aizen who witnesses her dancing and takes an interest in her. However, Sosuke is not the only one interested in her. Esmeralda will be taken into a world that is a matter of life or death.

When a witch or wizard turned fifteen, they began the process of sharing dreams with their soulmate. This process was marked with their a tattoo forming on their bodies, the only problem for Bronwyn Potter is her Soulmate is in another world and doesn't exactly believe she's real. She doesn't believe he's entirely real either.

During the Fall of Beacon, Jaune sacrifices his life on Beacon Tower and through a twist of Fate he ends up in Wano, serving Kozuki Oden after he saves his life. After Oden's death, Jaune is sent twenty years into the future and through another twist of Fate ends up back on Remnant. Now Jaune journeys through his old world with the intention of going back to Wano to avenge Oden!

Haki sounded interesting.If it meant knocking out others without fighting,Naruto was in.Get ready to for the journey as Naruto masters all forms of haki and take down powerful enemies

Thank you Emma Iveli for your permission to create this story. I'm doing my best to make it fun and twik it a little. it's basically my hero academia watching my heroes reborn in a theatre similar to all those watch movies or alternate universe stuff...