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.
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.
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.
One possible plot could be that in the future, Luffy, still driven by his dream of becoming the Pirate King, decides to return to Marinford. Ace and Sabo, who are also with him, have their own reasons for going back. Maybe they want to set things right after the chaos that occurred there before. Luffy could be aiming to make a statement that the new generation of pirates is different and stronger. They might face old enemies or find some sort of hidden treasure or knowledge that was left behind during the previous battles.
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.
Rediscovery of their relationship after separation can be a theme as well. Given their backstories in One Piece where they were separated at times, in the fanfictions, their reunion can be the starting point of a new, more romantic relationship.
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.
Luffy is the protagonist of One Piece, with a head full of dreams of being the Pirate King. Ace was his beloved brother, and they had a deep connection. Ace's strength was well - known among pirates. Sabo, on the other hand, was their childhood friend who they thought was dead for a long time. But he returned. The full story involves their childhood days, their separation, Ace's tragic end, and Sabo's re - emergence. It's a story that has elements of adventure, family love, and the pursuit of freedom. Luffy's journey is greatly influenced by his relationships with Ace and Sabo, and their combined story is a big part of what makes One Piece so engaging.
One common theme is brotherhood. Since they are like brothers in the original story, fanfics often explore and strengthen this bond. Another theme is adventure. They are all adventurous characters, so fanfics usually involve them going on exciting quests.
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.