Sakura's character would likely become more self - assured and independent. Time traveling would expose her to different situations and challenges that she has to face without relying too much on others. She might also become more empathetic as she experiences different eras and the hardships people face. Hinata, on the other hand, would grow in confidence. Being in new and unfamiliar times would force her to step out of her shell more often.
One common theme is redemption. For example, Sasuke might go back in time and try to fix the wrongs he did in the original timeline. Another theme is love. Hinata might use the time travel to get closer to Naruto earlier or in a different way.
A great plot idea is that they time travel to the founding of Konoha. They meet the first Hokage and his comrades. Sakura, with her medical knowledge, could offer to help with any ailments or injuries at that time. Hinata, with her gentle yet strong nature, might inspire the early ninjas to be more inclusive. They could also accidentally change some small things that have big impacts on the future of Konoha, leading to a series of adventures to fix things.
If they time - travel, Naruto and Sasuke's relationship could become even stronger. They might have a chance to bond over their shared knowledge of the future. Sakura could become closer to both of them as they work together in the past. Hinata, who has always admired Naruto, might find new ways to support him and also become better friends with Sakura.
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.
Well, 'Time Warp: Team 7's Second Chance' is another great one. Sasuke and Sakura get thrown back in time and they struggle to adapt at first. But then they start using their future experiences to make things better. There are some intense battles and some really cool interactions between the characters that make it a must - read for any Naruto fanfiction lover.
I really like 'Hinata's Time - Travel Twist'. In this fanfic, Hinata accidentally travels back in time due to a strange jutsu gone wrong. She has to figure out how to get back to her own time while also dealing with the past versions of her friends and enemies. It has a lot of great character development and shows Hinata in a whole new light.
There's also 'Hinata's Time Travel Quest'. This fanfic focuses on Hinata traveling back to her childhood. She uses her new - found knowledge from the future to train harder and also to change the way she was perceived in the past. It has a lot of character development and shows a different side of Hinata that we don't often see in the original series.
In a Sakura and Kakashi time travel fanfiction, they could end up in the past during a major war. Kakashi would be a great asset with his Sharingan and combat skills. Sakura, on the other hand, could help the wounded soldiers. Their presence in the past could change the outcome of the war. For example, they might be able to save some important characters who were supposed to die. This would then lead to a completely different future when they return to their own time.
Yes, there might be such fanfictions in the vast world of fan - created content. However, this kind of plot is often quite dark and goes against the general positive relationships depicted in the original works. Fanfictions can cover a wide range of themes and ideas, but this one may not be to everyone's taste.