Nami could also be a common character. She might help Luffy manage the financial aspects of his admiral duties, as well as use her navigation skills to assist in any navy - related voyages. And of course, she'd be there to keep Luffy in check when he gets too carried away.
One great 'luffy admiral fanfiction' could be the one where Luffy teams up with an admiral to face a common, extremely powerful enemy. It shows an unlikely alliance and how they overcome their differences in ideology to fight for the greater good.
Well, of course, Luffy is always one of the main characters. And then there's usually an admiral, like Akainu or Kizaru. They often start as antagonists to Luffy but then the story might develop their relationship in different ways.
One interesting plot could be Luffy in an alternate universe where he becomes an admiral earlier in his journey. He might use his unique leadership style and devil fruit powers in new ways to uphold the navy's justice while still maintaining his core values of freedom and friendship.
Well, one unique feature is the role - reversal or role - expansion. Luffy, who is known for his carefree pirate ways, is now in a position related to the admirals. It creates a contrast. For example, in some fics, he has to enforce laws which is completely different from his normal 'break - the - rules - to - do - what - is - right' attitude.
There's a 'admiral luffy fanfic' called 'Luffy's Admiral Training'. In this fic, Luffy decides to take on some aspects of admiral - like discipline and strategic thinking - while still being his goofy self. It's an interesting take on how he could grow in different ways. Also, 'The Admiral Luffy: A Different Path' shows a world where Luffy becomes an admiral from the start and how it changes the One Piece universe.
One great Admiral Piett fanfiction is 'The Piett Chronicles'. It delves deep into his character, showing his loyalty and the internal struggles he faces within the Empire. It gives a more human side to him, which is often overlooked in the original movies.
One great 'Naruto Admiral Fanfiction' is 'Naruto: The Admiral's Path'. It offers an interesting take on Naruto in an admiral - like role, with exciting battles and character development.
The theme of acceptance is quite common. Fem Luffy often has to be accepted by the other characters in the story. This could be because she's different due to her gender or her slightly different personality traits. Also, the theme of self - discovery is prevalent. As fem Luffy navigates the pirate world, she discovers more about herself, her abilities, and her place in the grand scheme of things.
Growth is a very common theme. Since Coby starts as a relatively weak character, many fanfictions focus on his journey to become stronger, both physically and mentally.