The plot could involve Naruto accidentally stumbling upon a strange artifact. This artifact has the power to bring the dead back, but it needs a strong emotional connection as a catalyst. Since Naruto has a deep emotional bond with Itachi (in the yaoi context), it activates when he thinks about Itachi. Naruto then uses it to bring Itachi back. But bringing Itachi back has unforeseen side effects. It disturbs the balance of the ninja world. So, Naruto and Itachi have to team up again, this time not just as comrades but also as lovers in a yaoi relationship, to fix the problems they've caused while also exploring their new - found relationship.
One possible plot could be that Naruto, consumed by his love for Itachi (in a yaoi sense), embarks on a journey to find a way to bring him back. He might encounter some ancient and forbidden jutsu that has the power to resurrect. Along the way, he has to face many challenges and enemies who oppose his plan. Once he brings Itachi back, they then have to deal with the consequences of defying the natural order of life and death in the Naruto world, and also explore their new relationship.
It's not really possible within the normal Naruto lore. But fanfiction is all about exploring 'what ifs'. In a yaoi fanfiction where Naruto brings Itachi back to life, it could be based on some extreme emotional bond. Maybe Naruto discovers a hidden power within himself that he can use to reverse death. But this goes against the established rules of the Naruto world where death is usually final. So, it's really a matter of the author's creativity and how they can justify such a huge event within the framework of the Naruto world, even if it's a yaoi - inspired take on it.
One possible plot could be that Naruto discovers a powerful and long - forgotten jutsu that has the ability to revive the dead. He decides to use it on Itachi. Once Itachi is back, they join forces to stop a new, powerful enemy that is threatening the ninja world. Itachi's skills and knowledge, combined with Naruto's power, make them an unbeatable team.
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.
One possible plot could be that Naruto discovers some ancient and forbidden jutsu. He decides to use it to bring Mito back to life in order to gain more knowledge about the Uzumaki clan. Mito then helps Naruto understand some hidden powers within the clan and they together face a new threat to the village.
One consequence could be that it messes with the natural balance of the ninja world. Maybe the cycle of life and death is disrupted, and this causes some strange phenomena to occur, like abnormal weather or chakra imbalances.
One common theme is redemption. Itachi has a complex past, and in many fanfictions, his relationship with Naruto becomes a path for him to find redemption. Naruto, with his forgiving nature, helps Itachi come to terms with his actions.
One common theme is redemption. Itachi has a lot of guilt in the original series, and in yaoi fanfiction, Naruto can often be a source of redemption for him, helping him come to terms with his past actions.
In certain fanfic ideas, Naruto could have made a deal with some sort of otherworldly being. He might have sacrificed something of great value, like a part of his own chakra or a future ability, in exchange for Kushina's life. Another possibility is that he finds a way to reverse the very nature of death by using some unique properties of the tailed beasts' chakra that he has access to.
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.
One idea could be exploring their relationship against the backdrop of the ninja world's politics. Maybe they have to keep their relationship a secret while dealing with the various power struggles. For example, Itachi could be using his position in the Akatsuki to protect Naruto from certain threats, all while their feelings for each other grow deeper.