Well, in a very theoretical sense, if we were to imagine an out - of - canon scenario where they could access fanfiction. Zoro might be annoyed if he read some fanfiction that misrepresented his strength or his relationship with the crew. He's a no - nonsense guy and would probably think it's a waste of time. But in the real context of the One Piece universe, there's no indication that they would even be aware of such a thing as fanfiction.
It's highly unlikely that One Piece characters in the official story read fanfiction. They are busy with their own adventures, battles, and the pursuit of their dreams. Fanfiction exists in our world, not in the world of One Piece itself. For example, Luffy is more focused on finding the One Piece and becoming the Pirate King rather than reading fictional stories about himself or his crewmates.
In the world of One Piece, there's no indication that the characters themselves watch fanfiction. Fanfiction is a creation of the fans in the real world, and the in - universe characters are too busy with their own adventures, like Luffy chasing after the One Piece, Zoro training to be the world's greatest swordsman, and Nami navigating the seas. They don't have access to or knowledge of the fan - made stories about them.
Probably not often. Marines are usually busy with their duties like maintaining order, fighting pirates, etc. They don't seem like the type to have a lot of time for reading fanfiction. But it's possible that some younger or more laid - back Marines might give it a try.
Luffy would probably be confused. He might not really understand why someone would write stories about him and his crew that aren't part of their real adventures. He'd be like, 'Huh? But that's not what happened!'
If the One Piece characters watched fanfiction, they might be really confused at first. For example, Luffy might not understand why there are stories about him that are so different from his real adventures. Some of them could be amused, like Chopper seeing cute versions of himself in some fanfictions. But others might be offended if the fanfiction portrays them in a bad way. Zoro might get angry if he's shown as being weak in a fan - made story.
In dark One Piece fanfiction, Enel is sometimes a very popular character to explore. Given his god - complex in the original story, it's easy to make him an even more menacing and all - powerful figure in a darker version. Crocodile is another one. His past and motives can be delved deeper into, and he can be made into a more complex and dark character. Buggy the Clown can also be a popular character, especially if his comical nature is turned on its head to make him a more devious and unpredictable villain.
You can read it online on various manga reading platforms or buy the physical volumes. Some libraries might also have them available for borrowing.
Luffy's carefree and optimistic nature would contrast with Ichigo's more brooding and serious personality. Luffy would probably be intrigued by Ichigo's powers and constantly ask him to show off his Bankai. Ichigo, on the other hand, might be a bit exasperated by Luffy's boundless energy at first but would come to appreciate his loyalty and determination.
Immortality in Naruto - One Piece fanfiction can also bring in elements of loneliness. The character might have seen all their friends and allies die over time. They could then be on a quest to find a way to end their immortality. Or, they might use their eternal existence to preserve the values of both worlds, acting as a sort of guardian. They could form alliances with different groups in Naruto and One Piece universes, based on their long - term view of what's good for the overall balance.
Goku would probably be very friendly with Luffy. They both love to fight strong opponents and have a sense of adventure. Goku might be a bit confused by some of the wacky things in the One Piece world like the Devil Fruits at first, but he'd quickly adapt. He'd also likely be impressed by the determination of the other characters like Zoro and Sanji.
One highly regarded One Piece fanfiction is 'The Pirate King's Heir'. It has an interesting plot that follows a new character who claims to be related to Gol D. Roger. Another good one is 'Straw Hat's New Adventure' which takes the Straw Hat crew on a different kind of journey not shown in the original manga. 'Ace's Redemption' is also popular as it explores an alternate scenario for Portgas D. Ace.