Becoming a pirate captain in a fantastical world was never in Ranma's life plans. But when magic strands him in the Grand Blue, he has no choice. With an impish wizard as a guide, Ryoga as his navigator, and a crew made of unwanted fiancees (plus Nabiki), Ranma sets out to find the One Piece and return to Nerima!

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.

Destiny always has a unique way of leading each person to reach the peak, but not all humans can reach that peak even though fate has shown the way. Zen'in Maki never thought she would be thrown into another world when she felt death would come to her. However, is it just a coincidence? Or is it the Destiny of the Universe that will guide her?

Modern!AU Naruto and Sakura decided to throw a party on their last Christmas before graduating. They invited the other straw hats to celebrate and they hope Luffy and Nami get together. The questions is will they be strong enough to confess their feelings?

Long ago A girl was saved by a straw hat wearing boy only for him to disappeare as soon as he appeared Now 12 years later he appears again. Will they remember each other ?

After the great escaped of Egghead Island. Luffy and his crew were sailing thru the seas, just after another day in the seas... Until one night... it was stormy, cold, dreadful night that no pirate, sailor, or marine can survive. Luffy was unfortunate in this dead night of the storm he slip during the storm as he fall into a portal as where Luffy takes him... so does other souls

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.

After sailing for some new waters around the New World, the Straw Hats pirates find themselves stuck in a new modern world full of technology and super power individuals all calling themselves heroes .Now while stuck they have to do some things not heroics to get back to their world.

Luffy is a young boy who wants to join an adventure guild. Once he turns 17 he joined one where he meets a girl named Rebecca and a little bot named Happy, he joined them to go into some space adventures. He meets a bunch of cool new people like Shiki, Weisz, and Homura. Along the way they meet strong and smart people like Zoro, Nami, Usopp, and Sanji. On the search for Mother!

D&D AU. The Straw Hat mercenary group are a band of merry do well that are all together thanks to a weird 19-year-old who is actually really powerful. One night they meet up with another really weird mercenary group called Vox Machina, the two make an alliance so they could destroy a mystical creature, win riches, have adventures, and win the respect of the entire kingdom.

I let this AI generated fanfic here. I hope someone will be inspired to continue.

Itachi Uchiha, on his death throes, is given a new life, in a new place. Awakening in an unknown place following his battle against his brother, he finds himself with an opportunity to try again. What will he do with this new life?

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

When Team 7 is confronted with a Road-Poneglyph and a little surprise left by a previous user of the Paw Paw Fruit, they are forced into an adventure that just doesn't compare to any mission they ever had to face. A story in which the Elemental Nations are just another humongous Island on the grand Line, and extreme isolation is caused by the surrounding watercurrents.

8 Universos. Solo un ganador. Los guerreros más adecuados han sido juntados en equipos de 10 para un combate campal. 80 Luchadores, solo un ganador. Quien gane tendrá un deseo capaz de darle todo, quien pierda lo perderá todo. ¿Podrán nuestros héroes sobrevivir a este conflicto...? ¿O Cederán ante el poder de los más fuertes? ¡Descubrelo!

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

During an attack from the LOV a group did a sneak attack on Izuku. When Izuku was attacked and disappeared from that earth. About a month later he returned. But for Izuku it was longer. Join Class 1-A and Izuku's friends as they discover how Izuku has changed. (MHA X One Piece X Seven Deadly Sins)

Nika, seeing how messed up the Worm universe is and how it's under the control under a powerful being, decides to send some chaotic freedom to that world in the form of Devil Fruit.

No Summary yet, ABANDONED MAYBE REWRITE LATER!

Times of old are passed. The age of pirates is the now. One special child holds the blood that is connected to the time of old. In her blood she can save the world or destroy it. With the blood of the greatest of all warriors flowing thought her veins can she live up to her legend of old and rock this world to the core? Female-Luffy

Ash Ketchum finds the Gomu Gomu no mi and eats it.

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)

Naruto and Sakura were on a mission to find the missing scroll. It is at a mysterious River. It led them to an incredible world filled with Pirates. One in particular... a rubber man one.

(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

After dying you get reincarnated into weird crossover between one piece and pokegirls. this will be a gamer / system story with plenty of lemons.