There are no existing theories about Luffy being able to read poneglyph fanfiction. In the world of One Piece, the focus is on the real - world elements of the story such as the poneglyphs themselves, the various islands, and the different pirate crews. Fanfiction is a separate entity created by fans for their own enjoyment. Luffy's journey is about discovery within the main storyline, like finding out what the poneglyphs really say and how they lead to the One Piece. Reading fanfiction about them doesn't fit into his character or the overall plot.
Well, in the official One Piece story, there's no indication that Luffy can read poneglyph fanfiction. Poneglyphs are ancient and important in the main plot, not related to fanfiction. So, most likely he can't. It wouldn't impact his journey as it's not part of the real One Piece lore.
I think it depends on how you look at it. On one hand, Luffy is always so focused on finding the One Piece and having adventures with his crew. But on the other hand, if fanfiction exists in his world, maybe he could read it for some light - hearted entertainment. However, he might get distracted from his real goals, so it's a bit iffy.
One great 'nami x luffy fanfiction' is 'The Bond Beyond the Map'. It beautifully portrays their relationship development. It shows how Nami's intelligence and Luffy's determination work together in new and exciting adventures.
There are quite a few. 'Luffy and Nami: The Treasure Hunt' is a really engaging one. In this fanfiction, they embark on a treasure hunt together, facing various challenges. It shows their teamwork and how they rely on each other. There's also 'The Luffy - Nami Alliance: Strengthened' which focuses on how their relationship evolves over time.
He could be bored during a long voyage at sea. With not much else to do, reading fanfiction might be a way to pass the time without his crewmates knowing. Also, he might want to see how others view his adventures and his relationships with his friends in the fan - created stories.
One popular luffy and fem luffy fanfiction is 'Fem Luffy's Adventure'. It shows a different side of Luffy if she was a female, with unique storylines and character developments. Another one could be 'Fem Luffy in a New World' which explores how fem Luffy might interact with the other characters in the One Piece world in new and interesting ways.
I would recommend 'Three Souls, One Dream'. It has an interesting take on their interactions, showing how Zoro, Luffy, and Sanji grow together as a team. It has some really heartwarming moments that capture the essence of their friendship.