Well, in this fanfiction, perhaps the relationship between Luffy and Rayleigh is explored in more depth. We might see Rayleigh sharing his old tales of the Pirate King Gol D. Roger with Luffy. This could inspire Luffy even more in his journey to become the Pirate King. Also, Luffy's character growth in terms of leadership could be a great part. Under Rayleigh's guidance, he might learn how to better lead his crew and make more strategic decisions during battles.
Probably, the main plot is about Luffy's transformation under Rayleigh's training. Rayleigh could be teaching Luffy about the secrets of the Grand Line, the lost history, and advanced combat skills. Luffy then uses what he has learned to face new and more powerful enemies. For instance, he might encounter some strong pirates who are also after the One Piece, and he has to use his newly acquired skills to defeat them and protect his crew. The plot could also involve Luffy's crewmates waiting for him during his training and their own mini - adventures in the meantime.
There's not enough information to know exactly who Rayleigh is. It could be a common name for a person in this context, maybe a local storyteller or someone known within a particular community.
In a fanfiction where Luffy meets Roger, it could be an amazing encounter. Roger might see in Luffy the same spirit of adventure and freedom that he had. He could pass on some hidden knowledge about the One Piece or give Luffy a cryptic hint about the true nature of the Grand Line. This meeting could also inspire Luffy even more, fueling his determination to become the Pirate King. It would be a moment full of emotion and significance for both characters and for the entire One Piece universe.
Well, in such a fanfiction, Luffy might gain some valuable advice from Roger. Maybe Roger could share his experiences about the One Piece and the Grand Line, which would inspire Luffy further in his journey to become the Pirate King.
A potential plot twist could be that Roger is actually a time - traveler. He came from the past to meet Luffy for a specific purpose, like to prevent a great disaster in the pirate world that only Luffy can help with in the future.
One interesting aspect could be the exploration of Sabo's emotions. He has a deep connection to both Ace and Luffy. In the fanfiction, it might show how he misses Ace and his unwavering loyalty to Luffy. For example, it could describe his memories of their adventures together as kids, which would be really nostalgic.
In this fanfiction, perhaps Luffy would get some valuable advice from Gol D Roger. Roger could share his experiences about the One Piece and the Grand Line, which might give Luffy new insights on his journey to become the Pirate King.
One possible thing that could happen is that Roger would tell Luffy about the real origin of the Devil Fruits. Given that Roger had explored so much of the world, he might know secrets about these strange fruits that no one else does. This knowledge could give Luffy an edge in his battles and his journey. Another aspect could be that Roger shares his experiences with the ancient weapons. Luffy might then be more aware of the power and danger they pose, which could be crucial in his future adventures.
Luffy traveling to Roger's time would be chaotic. He'd probably try to challenge Roger to a fight right away, seeing as he challenges everyone strong. But Roger would likely see something special in Luffy. Luffy might also introduce some new ideas to that era. Since he's from a more modern time in the story, he could have knowledge about things like different fighting techniques that haven't been developed yet in Roger's time. This could disrupt the balance of power in that era.