Maybe they travel to the early days of the Ninja Academy. Female Naruto, being as energetic as the original Naruto, causes chaos in the classroom. Sasuke is all cool and brooding as usual. They end up changing the relationships of the other students, like making Sakura more confident earlier on and helping Shikamaru be more motivated in his training. Their presence alters the normal flow of events and friendships in the academy.
One interesting plot could be that female Naruto and Sasuke travel back to the time when the Uchiha clan was about to be massacred. They try to prevent it from happening. Female Naruto might use her strong will and unique jutsu to convince the clan members and the village leaders to find a different solution. Sasuke, with his knowledge of the future, could help expose the real mastermind behind the plot against the Uchiha.
A possible plot is that they time - travel to a period when a great war is about to break out. Female Naruto and Sasuke have to work together to gather the five great nations and convince them to form an alliance before the war even starts. They use their future knowledge of the destruction war can cause and their skills as powerful ninjas to prevent the bloodshed. They might also encounter versions of their own parents and get to interact with them in ways they never could in their original timeline.
One interesting plot could be that they travel back to their childhood days and try to prevent some of the tragedies that happened later. For example, Sasuke might try to stop the Uchiha clan massacre from the start. Another plot could be that they are sent to a time when the ninja world was first being formed and they have to use their modern - day skills to survive and shape the new world.
One interesting plot could be that they travel back to the time when the Uchiha clan was about to be massacred. Sasuke might try to change the fate of his clan, while Shikamaru uses his intelligence to strategize and deal with the political implications. They could face many challenges, like not being believed by the people of that time or accidentally causing more chaos.
One interesting plot could be that Naruto and Sasuke travel back to their childhood days. They use their knowledge of the future to prevent certain tragedies, like the Uchiha massacre. They might also try to change how they first interacted, making their bond stronger from the start.
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.
A third plot might be that they travel to a time way before the founding of the ninja villages. Here, they could witness the origin of ninjutsu and the early clans. They may try to influence the development of the ninja world from its very roots, perhaps even trying to create a more unified and peaceful ninja society from the start without all the future conflicts that were based on old grudges and power struggles.
One interesting plot could be that Naruto and female Sasuke team up in a different way than in the original story. Maybe they go on a journey to discover a new chakra source together. They face challenges that test their bond and skills, and along the way, they start to see each other in a new light.
One interesting plot could be that in a world where Naruto is female, she and Sasuke have to team up against a new, powerful enemy that threatens the Hidden Leaf. During their battles and travels, they gradually realize their feelings for each other. Another plot might involve female Naruto using her unique charm and determination to break through Sasuke's cold exterior, and they end up falling in love while trying to restore Sasuke's place in the village.
Another type of fanfiction has them traveling to a future timeline. They see the consequences of their actions in the original timeline and then go back to change things. This can lead to a lot of character development as they realize the long - term impacts of their choices and strive to make better ones.
In a time - travel fanfiction, they could go back to their own childhoods. Naruto could give his younger self some advice on how to deal with loneliness. Sasuke might be able to prevent his family's massacre. Sakura could start training earlier and become even stronger, and Hinata could overcome her shyness more quickly and become a more confident ninja.
A really cool plot might be Sasuke using his Rinnegan - powered time travel to team up with the legendary Sannin in their prime. Imagine him joining forces with Jiraiya, Tsunade, and Orochimaru on a mission that could change the entire Naruto world. He could use his modern knowledge and skills along with their power and experience.