One possible plot could be that a powerful and mysterious ninja casts a spell on Itachi as part of a revenge plan against the Akatsuki. This results in the MPreg situation. Kisame and Itachi then have to embark on a journey to find a way to reverse the spell. Along the way, they face various challenges and also discover new things about their relationship and themselves. For example, they might find that they are more in love than they thought and that they are willing to sacrifice a great deal for each other and the unborn child.
MPreg (male pregnancy) in fanfiction often involves creative and unique interpretations. In a Kisame and Itachi fanfiction with this concept, it could explore their relationship in a whole new way. Maybe it could be set in an alternate universe where male ninjas have the ability to bear children. Writers might use this to show a deeper bond between Kisame and Itachi, as they face the challenges of this unexpected situation together. It could also delve into how the Akatsuki members react to such a strange occurrence within their ranks.
Another option is Tumblr. There are a lot of Naruto fans on Tumblr who might share or create fanfictions about this pairing. You can follow Naruto - related tags and search for the specific characters. However, the content on Tumblr can be a bit more scattered compared to dedicated fanfiction sites, so it might take some more effort to find exactly what you're looking for.
Friendship is a common theme. The reader character might form deep friendships with Itachi and Kisame, going on adventures together and relying on each other. Another theme could be mentorship, with Itachi or Kisame teaching the reader character new skills or knowledge about their world.
Power dynamics are also a frequent theme. Female Itachi and female Kisame are both strong characters in the Naruto universe. Fanfictions might explore how their powers interact with each other, and how they compare to other characters. Maybe they team up to take on a powerful enemy, or they have a power struggle within their relationship.
Another theme could be sacrifice. Itachi, with his complex past and motives, might have to sacrifice certain things to protect Naruto and their unborn child. Naruto, too, may have to sacrifice some of his dreams or relationships to make this new family situation work.
Fanfiction.net might also have some. Just use the search function and type in 'itachi x reader x kisame'. Then you can skim through the summaries to find ones that don't involve lemon content. Some authors prefer to write more about the emotional bonds and adventures of the characters rather than adult - themed scenarios.
One interesting aspect is the re - imagining of the Akatsuki dynamic. With a female Itachi, the power balance and the way she is perceived within the group could be different. Her relationship with Kisame could then have an impact on how they are both seen by the other members. Another aspect is the potential for different story arcs. For instance, a female Itachi might have her own personal goals that are related to her femininity, like protecting other female characters or using her unique perspective to change the Akatsuki's goals in a more nurturing way. And this would all play out in her relationship with Kisame.
One popular one might be 'The Unforeseen Bond'. It explores a unique relationship between Itachi and Naruto where Naruto becomes pregnant. The story delves deep into how they handle this unexpected situation, their emotions, and the reactions of the people around them in the Naruto universe.
These fanfics often attract a very specific type of audience. People who are interested in them might be into exploring non - traditional relationships and scenarios within the Naruto universe. However, they are not representative of the general Naruto fan community. They may also play with the character dynamics in a way that is very different from the original series. For instance, Itachi and Naruto's relationship in these fics might be more focused on the mpreg aspect rather than their more complex relationship as seen in the original anime, like Itachi's role as a tragic anti - hero and Naruto's journey to become Hokage.