A possible plot could also involve Fem Luffy time - traveling to different islands at different points in time. She could witness the evolution of the cultures on these islands, discover ancient secrets that were lost over time, and use this knowledge to strengthen her crew. For instance, she might find an old form of martial arts on an island in the past and bring it back to train her crewmates.
Another plot might be Fem Luffy traveling to a time in the future of the One Piece world. She could see the consequences of the actions of the current pirates, including her own crew. This could give her new perspectives on her goals and how to achieve them. For example, she might find out that a certain decision she made in the present led to a negative outcome in the future, so she goes back to change it.
Perhaps in the time travel, Fem Naruto ends up being mistaken for someone else in Madara's time. This could lead to all sorts of comical and also tense situations as she tries to figure out how to get back while also dealing with Madara and his plans. For example, she could be mistaken for a long - lost relative of a powerful clan, and have to play along to avoid suspicion.
One interesting plot could be Naruto and fem Sasuke traveling back in time to their childhood days. They could use their knowledge of the future to prevent certain tragedies, like the Uchiha massacre. Maybe they would also try to change their relationship from the start, with Naruto being more aware of Sasuke's feelings and vice versa.
Another concept is Luffy traveling to the future. He could see how his actions have shaped the world of pirates. He might find out that his name has become a legend and inspired many new pirates, which would be really cool for him.
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.
A possible storyline is that Fem Luffy has a special mission related to Whitebeard. She could be on a quest to find a hidden treasure that was once connected to Whitebeard's past. Along the way, she teams up with members of his crew and they face various foes together. As they journey, they learn more about each other's dreams and values, and Fem Luffy's presence might even inspire some of the crew members to pursue new goals.
One interesting plot could be a character going back in time to prevent a certain card from being created, which then changes the whole Yu - Gi - Oh! tournament scene. For example, if the Blue - Eyes White Dragon card was never created, how would the power balance shift among duelists?
One interesting plot could be Superman traveling back in time to prevent the destruction of Krypton. He could use his powers to stop the cataclysmic events that led to its downfall. Maybe he tries to convince the Kryptonian council of the impending danger, but faces resistance as they don't believe him at first.
Another plot could be that they travel to a future time where music has evolved into something completely different. They struggle to understand the new forms of music but also bring back some of the old charm from their time, creating a unique blend that revolutionizes the future music scene.
Another plot might be Kratos traveling to a time in the future of his own world. He could see the consequences of his actions and how the world has changed. Maybe he discovers that his actions have led to a new threat emerging, and he has to figure out how to fix it. This would add a new layer of responsibility to his character.
Well, in some time travel Kakashi fanfictions, there's a plot where Kakashi goes back in time right after Obito's 'death'. He tries to save Obito in a different way, not just by taking his eye. He could change the whole course of events that led to the formation of Akatsuki and the many tragedies that followed. This would completely rewrite the story of Naruto in many ways.