Ron finds himself reborn in the world of One Piece, stranded on a remote island in the East Blue. But he's not just any ordinary child-he's bonded to a mysterious sign-in system that grants him powers with every new location he visits. At his first sign-in, he unlocks the legendary Sun Breathing Technique, along with a boost to his vitality. From Shitmotsuki Village to Skypiea, Enies Lobby to Marineford, Ron travels the world, collecting extraordinary rewards that make him a force to be reckoned with. The Raikiri, one of the 21 Great Grade Swords, Armament Haki, Observation Haki, and more fall into his hands. As Ron steps onto the battlefield of Marineford during the legendary Summit War, the mightiest warriors-Four Emperors and Marine Admirals alike-pause, stunned by his presence. But Ron merely waves them off, "Don't mind me. I'm just passing through." Join Ron on his journey across the Grand Line as he signs in at iconic locations, growing stronger with every step. This is not just an adventure-it's a legend in the making. ........... This is a multiverse fanfiction starting in One Piece, transitioning into Demon Slayer, then to One Punch Man, and more. If you're only here for One Piece, feel free to stop when that arc concludes. If you love crossovers, you can continue reading :) .......... Access further chapters on my Pat reon: Elvenking20 (One Piece arc is already completed on pat reon [250+ chapters])

Azalea Potter's life was marked by pain before it had even truly begun. At the tender age of three, the scars of her relatives' cruelty caught the attention of magical authorities, leading to her swift - and legal - removal from the Dursleys' home. Whisked away across the seas to Japan, Azalea discovers a family she never knew she had: the proud and ancient Yukishiro Clan, a lineage of powerful Kitsune who have lived hidden from the wider magical world for centuries. Under the care of her formidable grandmother, Yukishiro Sayuri, Azalea's dormant bloodline awakens in a dazzling storm of magic, revealing her true heritage - and her first two gleaming fox tails. As Azalea grows, she learns to embrace the strength, cunning, and magic of her Kitsune ancestry. But destiny calls her back to the land of her birth, and when Hogwarts sends its letter, Azalea must walk a path few have ever dared: blending the trickster spirit of the Kitsune with the heavy legacy of the Girl-Who-Lived. In a world that sees only what they expect of her, Azalea Yukishiro Potter will teach them that a fox is never to be underestimated.

Harry Potter gained a new friend just before the start of his third year at school, how will his story change when a symbiote has been added to the mix?

I was reincarnated as a random Uchiha in Naruto, oh hell nah I'm not gonna die I will do what ever I want and I WILL SURVIVE. Edit: It starts off a little bad but it gets better as it goes on. Like all stories.

Harry Potter dies alone and is given a chance to change things, for a price. Español translation by Xx_Marshlet

A soul wakes up in a spider egg inside the great elroe labyrinth. The difference being that, this is not the world of the novel he had read in his previous life. The great elroe labyrinth is now a high level dungeon in the up-and-coming DMMO-RPG YGGDRASIL. Recognising this to instead be the world of overlord, he becomes a supreme being of Nazarick and prepares to transmigrate to the new world only to end up in the world of marvel during ancient times. Read as our protagonist, now known as Shiraori, intentionally or unintentionally sets up her own pantheon and shakes the world of marvel comics and movies. Warning: This is a gender bender, the protagonist is a male before coming to the world of overlord. I have wanted to try writing this story for a long time. A portion of the story will focus on the nazarick npc's and shiraori coming to be known as gods and forming their own pantheon in ancient times along with wars with other pantheons. I have quiet a few ideas I want to try in this fanfic. Also Momonga will 'NOT' be going to the marvel world. The image is not mine. Marvel x Overlord X Kumo desu ga nani ka? (So I'm a spider so what?) Original Uploads are on webnovel. Wattpad will be updated after web novel.

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. But there are forces that conspire at every turn. Will the kunoichi be able to handle the life of a pirate?

Serena Johnson is a 14 year old girl living in Los Angeles California with her evil step mother and sister. Her life can be described just like the movie Cinderella, except of course she hasn't had a happy ending yet. When she tries to run away from home, she 'dies' and is transported to the Naruto world. Serena feels like she belongs here for some reason. Is Serena Johnson even her real name? When she discovers she is the daughter of the 2 most powerful ninja, what will she do? What happens when Serena meets Naruto and the gang? Come along in the fun and entertaining journey featuring Serena discovering who she is.  [Warning: This is completely UNEDITED, and will be in the process of being edited quite soon!]

Requested to me by one of my readers, a similar concept as my Young Justice: Absolute Restoration. SI reborn in YJ with the powers of Law from One Piece. MC: Wakes up in a fictional universe with Law's powers. MC: ... MC: I feel like my powers are too OP for this world. Everyone from YJ: We agree. I do not own Young Justice. This work may be a short book, or it may become one of my full-fledged fanfictions. Let's see how it goes.

I died pretty young in my last life, only sixteen years old, but that still gave me plenty of time to read about Spider woman, and watch superhero shows like Young Justice. Spider woman, or Spider Gwen, was always my favorite superhero. As a fellow female, I can respect a girl who fights toe to toe with guys bigger and "stronger" than her. I always wondered what it would be like to be her in the Young Justice universe, with very few other female front line fighters. Well, now I have the chance to find out. I was reborn into Young Justice as Gwen Stacy, got bit by a radioactive spider, and you know the rest. I thought I could change my origin story from the one in my past life, but I couldn't. I wasn't able to save my best friend, the Peter Parker of this universe. Now, I save everyone else, and I stopped doing friends. But that doesn't work so well when the Justice League AND a team of young superheroes keep finding me.