One idea could be that Naruko travels back in time and accidentally disrupts Itachi's life before the Uchiha massacre. This could lead to her trying to prevent the tragedy while also dealing with the complex web of Uchiha politics. Another plot could be Itachi traveling to the future and meeting an older, more powerful Naruko, and together they have to face a new threat that's related to both their pasts.
One interesting idea could be Itachi traveling back in time to prevent the Uchiha massacre. He could use his knowledge of future events to find a way to resolve the conflict between the Uchiha clan and the village without bloodshed. Another idea might be Itachi traveling forward in time to see the consequences of his actions and how his younger brother Sasuke has turned out. He could then try to guide Sasuke in a different direction from the future he witnessed.
One idea could be that during their time travel, Naruto and Itachi end up in a time when the Uchiha clan was not massacred yet. Itachi has to face his past self and Naruto tries to find a way to prevent the tragedy without changing too much of the future. Another plot could be that they travel to a future where everything is in chaos and they have to use their combined skills and new - found relationship to set things right.
Another plot could be that when they travel back, they end up in a different timeline where the ninja world is in an even more chaotic state. Fem Naruto and Itachi have to use their skills and new - found friendship to restore order. Itachi might teach fem Naruto some of his more advanced Uchiha techniques, which she then uses to great effect.
Maybe they could meet in a different dimension where they have to work together to find a way back to their own worlds. Along the way, they share their stories, their hopes and dreams. Itachi could teach Naruko some of his unique jutsu techniques in a non - combat - oriented way, like for peaceful purposes, and Naruko could show Itachi the power of her unwavering determination. This kind of adventure - based plot would be interesting and family - friendly.
One popular plot idea could be that Sakura and Itachi travel back to a crucial moment in the ninja world's history. For example, they might go back to the time when the Uchiha clan was on the verge of being massacred. Sakura, with her medical skills and modern knowledge, could try to find a non - violent solution to the Uchiha - Konoha conflict. Itachi, on the other hand, would have the chance to relive that moment and perhaps change the fate of his clan. Another idea is that they travel to the future. There, they see the consequences of the actions in their own time and try to go back and correct things in their present. This could involve seeing a destroyed Konoha and working together to prevent it.
Perhaps in the fanfiction, the first time is when Sakura is sent to spy on Itachi. But instead of hating him as she expected, she discovers a side of Itachi that is full of pain and regret. This changes her perception of him completely and she decides to try and help him, leading to a complex relationship between them.
In a time - travel scenario, their relationship could develop more slowly. Since they are from different times, they might not understand each other's motives and values at first. But as they spend more time together, they could learn from each other. For example, Itachi could teach Naruko about the history and traditions of the Uchiha, while Naruko could show Itachi a more carefree and hopeful side of life.
Well, a possible plot for Naruko and Kyuubi fanfiction is that the Kyuubi's power starts to merge with Naruko in a way that gives her new and unexpected abilities. She could then use these abilities to change the way the ninja world views her. Maybe she becomes a symbol of hope for those with tailed beasts within them. Another plot could be that Naruko has to enter the Kyuubi's mindscape to help it heal from some old wounds. In doing so, she learns about the Kyuubi's past and how it came to be so feared. And finally, they could go on a journey together to find a lost artifact that has the power to either free the Kyuubi completely or bind it more tightly to Naruko, depending on how they choose to use it.
One plot idea could be Naruko and Sakura going on a mission together in a new and dangerous area, and they have to rely on each other's unique skills to survive. Another could be them having to deal with a misunderstanding within the village that threatens their friendship.
One interesting plot twist could be that in the time - travel, Naruko accidentally changes a key event that makes Sasuke a completely different person. Instead of being brooding and revenge - driven, he becomes more light - hearted and focused on building a new, peaceful shinobi world. This forces Naruko to re - evaluate her relationship with him.