Well, one possible plot could be that Naruto somehow gets trapped in the Infinite Tsukuyomi world where he is surrounded by a harem of female characters from the Naruto universe. They all have different relationships with him. Some might be his protectors, while others could be seeking his power or just his affection.
Perhaps the character development in this fanfic is interesting. Since it's a fan - created work, the author might take the opportunity to develop minor characters more deeply, especially in the context of the Infinite Tsukuyomi, which could be really engaging to read.
Obviously Naruto would be one of the main characters as it's his world and he's the center of the harem. Hinata would likely be a part of it too, given her strong feelings for Naruto in the original series. Sakura could also be included, as she has a long - standing relationship with Naruto as well.
In Itachi yaoi fanfiction, Itachi is often depicted as a complex and mysterious character. He is usually highly intelligent and powerful, which makes him an alluring figure in romantic or relationship - based stories. His loyalty, whether it be to his family, his village, or his love interest in the yaoi context, is also a common characteristic explored.
The main difference is that it's a fan - made story. So it can deviate from the main plot of Naruto. In the original story, the Infinite Tsukuyomi was a major threat, but in the fanfic, it might be explored in a more detailed or different way, like focusing on the personal stories of characters during the illusion.
Wonder Woman is another character that might be paired with Itachi. Her Amazonian warrior heritage and Itachi's shinobi skills can be compared and contrasted. Their different views on justice, with Wonder Woman coming from a more idealistic place and Itachi having a more pragmatic approach, can lead to some great character - driven storylines in fanfiction.
Itachi Uchiha's story is complex. He was a prodigy in the Uchiha clan. He was forced to make a difficult choice to protect the village. He slaughtered his entire clan, sparing only his younger brother Sasuke. He then joined the Akatsuki as a double agent, all while secretly hoping Sasuke would one day be strong enough to kill him and avenge the clan.
Yes, there are likely such fanfictions. Many fanfiction writers like to explore the idea of Itachi coming back to life with his memories intact. This allows for interesting character interactions, especially with Naruto. Itachi could use his wisdom and skills once again, and his relationship with Naruto could further develop in new and unexpected ways.