Naruto himself would be a great choice. He has a strong sense of justice and his time - traveling could lead to some interesting changes in the clan wars. He might try to end the wars early and bring peace among the clans. His unique abilities and personality would also make for an exciting story.
In a 'Naruto Time Travel Clan Wars' fanfic, a time - traveling character could be a descendant of one of the clans involved in the wars. They go back in time with the mission to retrieve a lost clan heirloom or secret technique. Once there, they get caught up in the clan politics and battles. Their actions during this time could either make the clan stronger in the future or lead to its downfall, depending on their choices.
Well, a major theme is redemption. In many of these fanfictions, characters who made mistakes in the past get a chance to correct them when a time - traveler intervenes. Also, power - ups are a common theme. As the time - traveler experiences the clan wars, they often gain new abilities or knowledge that make them stronger. Additionally, there's the theme of understanding the roots of the ninja world. By going back to the clan wars, characters get to see how the modern ninja world was shaped.
I really liked a fanfic called 'Fem Naruto: Clan Wars Redux'. In this one, the time travel aspect is used in a unique way. She goes back and forms alliances that were not possible before, which makes for a really engaging read as it changes the whole dynamic of the clan wars. There are also some great fight scenes.
A good 'Fem Naruto Time Travel Clan Wars' fanfiction should have a strong plot. For example, the time travel element should be well - integrated, not just a random addition. It could be used to solve mysteries of the past clan wars or change the fates of characters.
Naruto himself could be a likely time traveler. He has a strong sense of justice and a desire to prevent tragedies. If he learned of a way to travel back in time to the clan wars, he would probably try to stop the bloodshed and promote peace among the clans. Another possibility is Sasuke. Given his past and his connection to the Uchiha clan, he might want to go back to the clan wars to change the fate of his clan, especially the massacre.
One great 'Naruto Clan Wars Time Travel Fanfiction' is 'A Time - Twisted Shinobi'. It takes the main character back in time during the clan wars and they have to use their modern knowledge to change the course of events. Another is 'Time Traveler in the Clan Wars Era' which focuses on a character who tries to prevent certain tragedies from happening during the wars.
One interesting plot idea could be a character from the future traveling back to the time of the clan wars and trying to prevent a certain tragic event that led to the downfall of their clan. For example, if it was a Uchiha, they might try to stop the massacre. Another idea is that the time traveler accidentally changes the course of the clan wars in a way that creates new alliances and rivalries that were not present in the original timeline. They could also introduce future jutsu or technology into the past, which would completely disrupt the balance of power during the clan wars.
One major theme is survival. The clans are in a fight for their existence. Some fanfics also explore the theme of redemption. A character from a war - causing clan may try to atone for their clan's actions and bring about peace. There are often complex family dynamics within the clans as well, which is another important aspect of these fanfics.
Well, it could change a lot. Maybe his birth becomes a symbol of hope in the midst of all the chaos. It might lead to different alliances being formed as clans see Naruto as a potential unifying factor.