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 adventures of the Dallon's favorite Uncle.

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.

Upon arriving on an island Luffy is sent to a new world where there are creatures called Demons, Angels, and Fallen Angels. While there he meets a girl named Rias and joins her club. Now Luffy needs to find a way home while making new friends and maybe find the way to some girl's hearts. Luffy x Harem. Future Lemons. A bit OOC Luffy

Living with a facade is easy for Usopp. He has done it all his life. Hiding his real personality and restraining himself from being stronger that he appears to be. Until, he finds himself stuck in another world, with no possibility to return.

Hachiman Hikigaya, a recently promoted soldier within the Marine ranks, suffers the misfortune of being chosen as one of the combatants at Marineford. However, as they say, miracles can happen in the midst of a storm, and Hachiman manages to attain a power that changes his life forever.

A self-insert lands in the MHA world, only to think she's in the One Piece one. She proceeds to bring the latter's insanity to the former by copious amounts of Devil Fruit jailbreaking. Watch as the Copy Woman turns logic upside down and makes you question everything you knew, or her name isn't D (it isn't, she just calls herself one). Semi-Regular weekly updates on Sundays

Thanks to an act of revenge against Kuroinu, Luffy who is close to completing the two years of his training ended up being summoned to another world. For the Warrior Princesses this could be a salvation from a tragic end, for Kuroinu the bane of her dreams. After all, Luffy possessed great power.

The Straw Hat Pirates team up with Team Natsu, Team RWBY, the Karasuno first-years and the eight best Totsuki first-years in the New World against an organization that seeks to create an empire to rule over all!

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

To keep this simple this is simply a Tenshinhan harem adventure in One Piece.

Amidst an enigmatic island's ancient statues and the flames of destiny, Roronoa Zoro discovers a guardian from ages past. As swords clash and mysteries unravel, a new companion joins the Straw Hat crew, setting the stage for an uncharted journey into the heart of the Grand Line.

Killed by Kaguya, Sasuke deemed his darkness to be no more. He wished he could have another chance at life. Luckily, his world changed with the words 'Start Game.' Gamer Sasuke

Desert Destiny:The Tale of Yamcha in Alabasta" follows the incredible journey of a young boy, Yamcha, who loses his family and finds himself in a world he could never have imagined. In the mysterious Alabasta Kingdom, Yamcha's natural warrior talents and newfound friendships with Princess Vivi

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

In a world unfamiliar to him, Koby, a former marine captain from another realm, finds himself in the midst of the ninja village of Konoha. Tasked with adapting to this new reality, he becomes an unassuming hero to the people, earning respect through his honesty and dedication.

Todos saben en el mundo que la sangre Hanma es una de las más extrañas y más poderosas, ¿Pero qué pasaría si a eso le agregamos la voluntad D. que también es temida por el mundo? Está es la historia de Hanma D. Yuichiro, un chico problemático que llega a la academia Kuoh, donde conocerá a demonios, ángeles, dragones y muchas otras criaturas y seres

From Worlds Apart to United Paths: Follow the extraordinary journey of Sanji Vinsmoke, a young boy with a mysterious past, rescued by legendary shinobi Jiraiya. As their lives intersect, a unique bond forms, merging the expertise of two vastly different worlds. Hope you enjoy feel free to leave a review

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.

Harry knew he should have ignored the mysterious fruit. But it was right there! So what if it looked a little weird? He was starving and food was food. He didn't expect to find a spirit or set himself on fire, though. Whoops?

Monkey D. Luffy has long since become the King of the Pirates, and has been yearning for his next big adventure. It's time to tackle the greatest threat to the Multiverse... the Justice League.

Before Fire-Fist Ace could be executed, he's saved by an old childhood friend of his, Sunset Shimmer. She's been watching and learning from the shadows, ready to show what she learned. One Piece World infused with magic from Equestria, that allowed all the strange and weird things to happen in the first place. As I really can't explain how a world like One Piece can work.

In a second, the shinobi world vanished, revealing that it was just one more island within the new world. Alone and devastated, in a world where her existence could be a danger to the global order, Sakura let herself go, waiting for her death until fate led her to certain pirates who gave her hope and a reason to live. Sakura embarks on a journey in a new world.

Someone who died and was reincarnated into a fictional world, but he also got the Mission to purify the Hollows who escaped from Hueco Mundo.

I had a pretty average life. Next thing I know, I'm in a world I've only ever fantasized about being in. Now I'm sailing with the craziest pirate crew there is. What could go wrong? (Self-insert) First fic... mostly One Piece with x-over elements.