Well, it could be that in certain fanfictions, the writers are trying to explore 'what - if' scenarios where Ace and Sabo have some sort of falling out with Luffy. It might be because of jealousy, perhaps they think Luffy is getting more attention or something. But really, this is a huge departure from their normal loving relationship in the main One Piece story.
In fanfiction, the idea of Ace and Sabo hating Luffy can be a result of the author's desire to introduce new and unexpected plot twists. Sometimes, authors may not fully understand or respect the original characters' relationships. In the official One Piece lore, Ace, Sabo, and Luffy have a deep and affectionate bond. But in these fanfictions, the authors might make Ace and Sabo hate Luffy for reasons like power struggles. For example, they could write that Luffy's growing power makes Ace and Sabo feel threatened, which then leads to this contrived hatred. However, it's important to note that this is not in line with the true spirit of the One Piece characters.
In some fanfictions, character corruption can be a factor. The author might decide to corrupt the pure relationships in the original story. So Ace and Sabo are written as hating Luffy because they are influenced by some external dark force or bad ideology within the fan - created universe.
One great 'Ace Sabo Luffy Fanfiction' is 'The Brothers' Bond'. It beautifully explores their relationship, showing how they support each other through various challenges. Another one is 'Sabo's Return'. It focuses on Sabo coming back into Luffy and Ace's lives and how they all readjust. There's also 'Ace and Luffy's Adventure', which takes the three on a fictional journey filled with action and heartwarming moments.
Well, one possible future for them in Marine fanfiction could be that they form a special unit. Ace with his fire power, Luffy with his rubber abilities and Sabo with his skills would be a formidable team. They could be sent on special missions to deal with the toughest pirates. This way, they are still following their dreams of adventure while being part of the Marines.
Well, in fanfiction, Luffy's bond with Ace and Sabo is unbreakable. They grew up together and share a lot of memories. When it comes to the Marines, they represent the 'order' that Luffy and his brothers are sort of defying as pirates. Some fanfictions might show a young Marine recruit who has a change of heart after seeing the strong bond between Luffy, Ace, and Sabo. He starts to question whether the Marines are always in the right. Usually, though, the Marines are there to create conflict for the trio.
You can start by looking on popular fanfiction websites like Archive of Our Own (AO3). It has a large collection of One Piece fanfictions, including many focused on Ace, Sabo, and Luffy. Another option is Fanfiction.net. There are also some dedicated One Piece fanfiction forums where you might find some hidden gems of Ace Sabo Luffy fanfiction.
In fanfiction, their relationships are sometimes explored through shared battles. For instance, they might all fight together against a common enemy, like a powerful navy fleet. During these battles, the trust between Ace, Sabo, Luffy, and the members of Whitebeard's crew is emphasized. The relationships are also shown through quieter moments, like when they are all on the ship sharing stories and dreams, which helps to strengthen the bond between them all.
One possible plot could be a grand adventure where they team up to take on a powerful enemy that threatens the safety of their hometown. They could use their combined skills and the strong bond they share to overcome challenges.
One common theme is their brotherly bond. Writers often explore how their relationship grew and how it affects their adventures. For example, a fanfiction might show how they support each other during tough battles.
I would recommend 'Ace, Luffy and Sabo: Reunion of Souls'. This fanfiction is full of heart - warming moments. It shows how their past experiences shape their present interactions and how they support each other in the face of difficulties.
Perhaps in this fanfiction, Ace, Luffy and Sabo will make Marineford a place where pirates and marines can live in harmony. They could set up some rules that both sides can abide by.