Often, time travel is used to change the past or future relationship between Sasuke and Sakura. Maybe they go back in time to prevent a bad event that affected their relationship.
In these fanfics, one plot element could be that the time travel is not by choice. Maybe a jutsu gone wrong or some ancient ninja magic sends them back in time. Once they are in the past, they realize that they are the key to preventing a great disaster that was related to their relationship in the original timeline. So, they have to work together, which in turn strengthens their bond. And sometimes, they might face opposition from other characters who don't understand their time - traveling situation or are against the changes they are trying to make.
A common plot element could be that in the time - travel scenario, Sasuke and Sakura have a chance to start anew. They might get to know each other better in a different time period, and this new - found understanding changes the course of their relationship. For example, Sakura could show Sasuke a different side of the ninja world that he didn't see before, which makes him fall in love with her in a new way. Also, they might have to deal with the consequences of changing the timeline, like how it affects their friends and the overall balance of the ninja world.
I'm not sure about specific 'Sasuke Sakura time travel he was ours' fanfics off the top of my head. You could try searching on fanfic websites like Archive of Our Own or Fanfiction.net. They usually have a wide variety of fanfics in the Naruto fandom.
Another theme is the power of knowledge. Because they come from the future, they have knowledge that others don't. This knowledge can be used for good, like preventing a war, or it can be a burden because they have to be careful not to change things too much. Fanfics often explore how they handle this power and the responsibility that comes with it.
One common theme is redemption. For example, Sasuke might get a chance to correct his past mistakes by going back in time. Another theme is prevention. They could prevent the death of important characters like Jiraiya or Neji. And of course, there's the theme of self - discovery. As they interact with their younger selves, they learn more about their own growth and development.
One common theme is the chance to rewrite history. Since it's time travel, Sakura or Sasuke often get the opportunity to change events that they regret in their original timeline. For example, Sakura might try to prevent Sasuke from leaving the village in the past.
One popular theme is fixing past mistakes. Fans like to see Naruto, Sasuke, and Sakura go back and prevent tragedies like the Uchiha massacre or Naruto's lonely childhood. It gives a sense of redemption for the characters.
Love and friendship are also big themes. Their relationship is often explored in different ways, from a slow - burn romance to a deep friendship that turns into love. Fanfics may show how they support each other through tough times, like when Sakura heals Sasuke's emotional wounds.
A common theme is dealing with the consequences of time travel. They can't just change things willy - nilly without consequences. In many fanfictions, they have to carefully consider their actions because any small change could have a huge impact on the future. And there's also the theme of nostalgia. Returning to the past brings back memories and emotions, and they often have to deal with how they feel about their past selves and the events that happened back then.
A frequent theme in 'sasuke and sakura family fanfics' is the contrast between Sasuke's brooding nature and Sakura's warm - heartedness. This contrast creates interesting family situations. Also, the theme of protecting the family is common. Since they both have a past full of danger, they are always on guard to keep their family safe from any threats that might come from their previous lives. The growth of their relationship as a couple within the family setting is also a popular theme.
A third common theme is the transformation of Sasuke's view of Sakura. At first, he may see her just as a maid, but as the story progresses, he starts to notice her in a different light. This can be due to her kind acts, her determination in her maid duties, or her unique personality shining through in this new role.
One common theme is their relationship development. Fans often write about how Sakura's love for Sasuke evolves over time and how Sasuke gradually comes to understand and maybe reciprocate her feelings. Another theme is their teamwork, like how they fight together against common enemies and how that strengthens their bond.