Sure, there are. Some writers focus on the relationship in a more platonic or adventure - based way. For example, they might explore how Naruto and fem Itachi could team up to face a common enemy in the Naruto universe. These types of fanfics usually emphasize the bond between the characters without any inappropriate content.
One popular 'naruto x fem itachi fanfic' could be 'Naruto's Unlikely Bond with Fem Itachi'. In this fic, it might explore how Naruto, with his usual determination and kindness, forms a unique connection with a female version of Itachi. It could involve them teaming up against common enemies in the Naruto universe and Naruto gradually seeing the fem Itachi in a different light.
One common theme is the exploration of friendship. Despite their different backgrounds and personalities, they often form a strong bond in these fanfics. Another theme is redemption. Fem Itachi may have her own past actions she wants to make up for, and Naruto can be a catalyst for that.
The theme of discovery is also prevalent. Fem Naruto discovers new sides of Itachi, and he in turn discovers something different in her compared to what he expected. It's like they are exploring a whole new world together. Also, there's often the theme of sacrifice, as they may have to sacrifice things for each other in the story.
A plotline might involve the two of them in a world where gender roles are more fluid. Effeminate Naruto and fem Itachi could be part of a mission together, and during the process, they discover new aspects of each other's personalities. For example, Naruto's kind - heartedness and Itachi's hidden soft side. Their relationship could develop from mutual respect to something deeper as they face various challenges. And perhaps they have to deal with the reactions of their friends and the ninja community to their relationship, which adds more drama to the story.
Another plot point could be a love triangle. Suppose there's another character who has feelings for Naruto and is jealous of his growing relationship with fem Itachi. This could create a lot of drama and tension in the story. Also, the backstory of the fem Itachi could be different from the male Itachi's. Her reasons for being involved in certain events in the Naruto world could be a major plot point, like if she has a personal vendetta against a particular group or person.
One common theme is the overcoming of differences. Naruto and fem Itachi come from different backgrounds and have different personalities. Their marriage forces them to deal with these differences and find common ground.
Another theme is the power of love. It's often shown that their love can overcome the differences between their clans and the past grudges. They support each other in battles and in making important decisions for the ninja world. In some fanfictions, their love is what unites different factions in the shinobi world. A good example is when they use their combined influence to stop a war that was brewing due to old clan rivalries.
Love and forbidden love are common themes. Since Itachi is from the Uchiha clan and Naruto (as a female in this context) is an outcast, their relationship goes against the norms of their world.
One possible plotline is that Fem Naruto and Itachi are assigned to protect a valuable village asset. Along the way, they face numerous enemies and have to work together to overcome them. As they fight side by side, they start to respect each other's abilities more.