I was sent to the One Piece world, great. Ended up in an island in the middle of nowhere for a year without any human contact, terrible. Have a somewhat unique Celestial Forge, Great. Kaido decided to jump from a sky island right on top of the island and now wants me to join his crew... interesting. (Celestial Forge, Harem, dark gray-MC, OP)

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

What happens when one of the four emperor's of the sea decided to visit his wife in a world of hero's what would be the outcome of this find out

He's clearly human, just a fresh seed in the eyes of the adults. Yet his physique is what made others call him a monster, a beast, a fighting maniac, even to such an extent, a demon! "It doesn't matter what they call me, as long as I can fight then it's all good!"

Yukari in her daily travel's to the outside world, stumbles upon a place she finds Interesting. In this place pirates across all Places come from the seas, in search of the treasure of a deceased man called Gol. D Roger. The One Piece. Yukari then decides to throw the hakurei miko In this place for her own amusement. now Reimu has no choice but help Luffy become the pirate king.

It was Marco who took the blow to save Luffy's life, not Ace. Even if the risks are great, he took it regardless. To save everyone, he is willing to end his current existence and wait to be reborn once more. This isn't his first rodeo after all and yet the world he woke up with isn't what he expected. Why would he want to be a ninja, is he insane? MarcoXFem!Naruto Slight!AU

So, after defeating Kaido, Luffy stumbles upon a mysterious portal. turns out that portal is unstable and it makes Luffy go to the top of the UA building where he has an encounter with a... mink? and a middle aged business man. and by sheer luck Luffy now attends UA school, with his new friend Momo.

Naruto was born and raised on Konoha Island where he was trained to become a powerful shinobi, the combination of an assassin and a warrior. Now his latest mission will prove to be the biggest challenge in his career and naturally presents him with a new set of obstacles. Not only that, something strange is happening in the background which has massive implications for the world.

What if Naruto was the grandson of Whitebeard. What if he was death incarnated. What if he cold hearted. What if for once he didn't like the straw hats. What if he wasn't so nice. What if he was cold hearted? This is the story of Naruto Uzumaki Newgate grand son of Whitebeard and death incarnated. Dark at times.

Fate was a cruel mistress. Just as they thought that they had defeated Kaguya, she pulled one last trick out her sleeve. In a new world full of pirates, marines, nobles, and revolutionaries, he'll fight against the corrupt system that plagues this world. Despite being lost in a different world, with new challenges and enemies, his Will of Fire will not be extinguished

"Live as long as possible, if you lose your life again, there will be no possible resurrection." This is the ordeal that Being X imposed on Tanya during her second life. And that's exactly what she will do without asking for help from the individual she considers an impostor, despite all his schemes.

After a light shines across Alucard's eyes, he is sent to a strange world, beyond imagination, and what will he do to affect it with his presence... [Set in the beginning of the Thriller Bark Arc]

Sakura just wanted this war to end, for her teammates to be able to smile together again. Instead, she wakes up in another dimension, loses her ability to swim, and becomes shrouded in more mystery than she cared for. Now she aims to travel the Grand Line, with the oddest crew mates and their eccentric straw-hat captain, in hopes of uncovering answers.

Our favorite Greek demigods and gods are doomed to see the adventures of Monkey D. Luffy! With the company of Themis, the ancient goddess of justice and the flamboyant pirate captain Rapidfire Junior, you will see the craziest story ever told, about of the future Pirate King!

Where he was once a legendary, feared pirate formerly known as the Yonko Whitebeard, Edward Newgate now has a more mundane live, living day to day in the exciting world of DC while doing what he does best. Being a father for those who need it. Slice-of-life story miniseries FOR PEPPY

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.

Ash Ketchum hails from another continent where 900 years ago devil fruits were brought into existence due to mysterious circumstances. Now wanting to travel the world he sets off as a pokemon trainer with the powers of the Gomu Gomu no mi.

"Whose voice was that?" Monkey D. Luffy heard someone calling out to him and felt the urge to reach back out yet found it impossible to do so. "Shishishi! Like that'll stop me from helping you." Once again, Luffy and his ties with destiny has dragged himself along with the StrawHat Pirates into a journey crossing the very fabric of reality as two worlds collide. Post Wano Arc*

When Ace falls out of the sky with no memory of his past life, he meets a nice family who helps him to get back on his feet. He didn't expect that staying with the Kurosakis would throw him into a crazy other world with shinigamis and huge monsters. But he's definitely along for the ride with his new friends, and people he sees as a new family.

No Set Timeline: When 7-year-old Luffy meets 6-year-old Princess Usagi, he declares that she'll be his Queen while on his journey to become King of the Pirates. Now, as Usagi is turning 21, a 22-year-old Luffy & his surprised crew will travel to Luffy's wedding. What will happen before & during the wedding? -A LuffyღUsagi Pairing- Alive Sabo&Ace- Very very slow updates/hiatus ㅠㅠ

The Supernovas all get sent to a world full of heroes, how will this go? The Supernova are just after Wano and before Egg-head so don't try to say that didn't Luffy meet Bonney? Or something. In MHA we'll see Class 1-A in USJ. T for mild swearing

Después de no poder apoyar durante la lucha contra Overhaul y perder a su amigo en batalla, All Might cae en depresión al sentirse un estorbo donde una vez fue el número uno. El trauma le trae memorias de un viaje increíble en un mundo donde los poderes pueden ser vencidos con una fuerza llamada Haki, lo que no sabia era que revivir esos recuerdos repercutiría con su presente.

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.

"¿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).

His business in the Elemental Nations concluded, Natsu and his allies now find themselves embroiled in the second half of the Realis Grail War set amidst a world of Pirates, Marines and Servants. Threats from past and future alike collide as a plot eight hundred years in the making threatens to put all of existence itself at the mercy of the Antiverse.