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.
Naruto might give Luffy training in stealth. Since Naruto is a ninja, he is well - versed in moving around unnoticed. Luffy, on the other hand, is more of a straightforward fighter. So Naruto could show him how to approach enemies without being detected first, which would be a new and useful skill for Luffy in his pirate adventures.
Well, 'rayleigh tells story' might refer to a situation where Rayleigh, who could be a storyteller, a character in a certain setting, or just an individual named Rayleigh, is in the act of narrating a story. Maybe it's a bedtime story for kids, or a spooky story around a campfire. Without more details, it's hard to say exactly.
In some fanfictions, Luffy's Haki training often involves extreme challenges. For example, he might face powerful foes that force him to push his Haki to new limits. He could be in situations where his Observation Haki has to be sharpened quickly to avoid deadly attacks. Sometimes, he trains with new mentors in fanfic worlds who have unique ways of teaching Haki, like making him endure intense mental and physical stress to strengthen his Conqueror's Haki.
One interesting aspect is the new types of Haki that fanfic writers come up with. Maybe a combination of different Haki forms that give Luffy an edge. For example, a fusion of Observation and Armament Haki for a super - powerful defense. Another aspect is the training partners. In fanfiction, Luffy could train with characters from other universes or time periods, which makes the training scenarios very exciting.
Another plot could revolve around Naruto being hunted. Maybe there are forces in both the Naruto and One Piece universes that see Naruto as a threat because of his unique heritage. He has to constantly be on the run, learning new skills along the way to defend himself. He might team up with some unlikely allies from both universes, like a One Piece character helping him understand his new powers while a Naruto character helps him with his ninja skills.
If it's a Naruto - son of Silver Rayleigh fanfiction, it might involve a lot of world - building. The author would have to figure out how to blend the Naruto and One Piece universes. Naruto might grow up with a different set of values, influenced by Rayleigh's pirate ways. He could be more of a lone wolf, yet still hold onto his original Naruto - like determination to protect his friends and village. It could also lead to some really cool fight scenes where Naruto combines his ninja techniques with Rayleigh - inspired powers.
Another aspect could be that the OC has a strong sense of justice. Rayleigh is associated with the Roger Pirates who had their own sense of adventure and justice. The OC could inherit this value and strive to make the world of the fanfiction a better place, perhaps by fighting against the corrupt elements in the pirate world.