One common theme is redemption. Itachi has done many controversial things in the Naruto series, and in these fanfictions, his want for Naruto could be part of his journey towards redemption. He might see something in Naruto that makes him strive to atone for his past sins.
Another theme could be mentorship. Itachi, being a highly skilled ninja, might want Naruto for his potential and see himself as a mentor to help Naruto reach new heights. This could lead to training sequences and the sharing of Itachi's unique skills and knowledge with Naruto in the fanfictions.
The theme of power and its consequences is also quite common. Sasuke, Naruto and Itachi all possess great power. Fanfictions might explore how they handle this power, whether they use it for good or are tempted to use it for their own purposes. For instance, Sasuke's pursuit of power for revenge in the original story can be re - examined in fanfictions. Also, family bonds are a significant theme. Itachi's actions were deeply related to his family, and fanfictions may delve deeper into how his relationship with Sasuke affects the overall story and how Naruto might interact with this family dynamic.
Alternate universe is also a common theme. This could be an AU where Itachi never joined the Akatsuki, or where Naruto and Itachi meet under completely different circumstances. These types of fanfictions allow for a lot of creativity as the writers can completely change the events and relationships in the Naruto world.
One common theme is redemption. Since Itachi has done some controversial things in the original story, many fanfictions focus on him finding redemption through his interactions with Naruto. Another theme is friendship. Naruto has a way of befriending almost everyone, and in fanfictions, this friendship with Itachi is often explored.
One common theme is mentorship. Since Naruto admires Itachi, it often shows Itachi as a sort of mentor figure to Naruto, guiding him in different ways. For example, teaching him about the importance of sacrifice for the greater good.
Another type of fanfiction could be set in an alternate universe where Itachi never had to kill his clan. In this story, he and Naruto could become friends much earlier. Itachi could act as a mentor to Naruto, guiding him not just in ninja skills but also in understanding the complex politics and history of the ninja world. This would change Naruto's perspective and his relationships with other characters in the series.
One common theme is redemption. For example, Itachi's actions are often explored in a way that he tries to atone for his past deeds. Naruto usually helps in this process as he believes in the good in people.
One common theme could be the exploration of forbidden love. Since Naruto and Itachi are from different sides in the original story, this situation could delve into the idea of love that goes against the norms. Another theme might be the challenges they face due to this unexpected pregnancy, like how they deal with the reactions of their friends and the ninja world at large.
One common theme is the exploration of altered relationships. With Itachi's gender - flipped in Rule 63, his relationships with family members, like Sasuke, can be explored in new and interesting ways. Another theme is the adaptation of his ninja skills and abilities in a different context. Since his character has changed in terms of gender, how he uses his Sharingan and his combat style might be adjusted in the fanfiction.
One popular theme is romance. Fans often explore the relationship between Sakura and Naruto in different ways, like what if they got together earlier or how they deal with their feelings for each other. Another theme is adventure. Writers might create new missions for Sakura and Naruto to go on together, with new villains and challenges.
One common theme is redemption. Since Itachi has a complex past in the original series, in yaoi fanfictions with time travel, he often gets a chance to right his wrongs or make different choices that lead to a more positive outcome, especially in the context of his new relationship.