In a fanfiction, Naruto and Itachi could be partners in a different dimension. Maybe they were brought there by some sort of strange jutsu. They have to find a way back home while also dealing with the unique problems of this dimension. Itachi's calm and strategic thinking combined with Naruto's determination and never - give - up attitude would make for an interesting dynamic.
A great fanfiction concept could be that Naruto and Itachi are partners in a training arc. Itachi, with his vast knowledge and skills, could train Naruto in some new and unique ninja techniques. Naruto, in turn, could teach Itachi about the power of friendship and believing in others, which Itachi may not have fully experienced before. This would lead to a growth in both of their characters.
One thing that could happen is that Naruto's influence might make Itachi more open about his feelings. Itachi has always been a very private person, but Naruto's outgoing and empathetic nature could break down those walls. They could also combine their abilities in combat in unique ways. Naruto's Rasengan and Itachi's Fire - Style jutsu could create some really cool and powerful attacks.
A third idea is that in a post - war scenario, Naruto and Female Itachi are part of a group rebuilding the ninja villages. They have to work together to allocate resources and help the survivors. At first, there are tensions because of the different clans they belong to. However, as they interact more, they realize they have a common goal of creating a better future for all ninjas. They might face challenges from other ninja groups who oppose their ideas of unity, but together they stand strong and form a bond that is both a friendship and a partnership in the reconstruction efforts.
A plot could involve Naruto and the Kyuubi being separated by an evil force that wants to control the Kyuubi. Naruto then has to fight his way through various obstacles and enemies to reunite with the Kyuubi and restore their partnership.
Another unique idea is time - travel. There are fanfictions where Sasuke travels back in time and tries to prevent the tragedies that happened to his family. This creates a whole new set of interactions with Itachi and Naruto.
Some fanfictions might explore a scenario where Itachi and Naruto have to go on a secret mission together. During this mission, they encounter various challenges that force them to rely on each other. Itachi's calm and calculated nature combined with Naruto's impulsiveness could lead to both comical and tense situations as they strive to complete the mission.
One idea could be that Naruto, after being banished, is found by Itachi in a desolate place. Itachi, seeing Naruto's potential and his own complex feelings towards Konoha, decides to train Naruto in secret. This could lead to Naruto developing new and unique jutsu under Itachi's guidance, and perhaps they form an unlikely alliance against a common enemy.
A really interesting plot might be that Kurama decides he wants to experience the human world more like Naruto does. So Naruto takes him on a 'tour' of the Hidden Leaf Village, showing him all the things he loves about it. But during this time, they notice some strange things going on in the village that seem to be related to an old enemy of Kurama's. They then have to use their partnership to figure out what's going on and stop it before it's too late. This could involve them using their unique bond to communicate with the villagers in a new way and uncover secrets that have been hidden for years.
One idea could be that Ruby and Jaune are partnered for a special mission outside of Beacon. Ruby's speed and combat skills combined with Jaune's strategic thinking could make them a great team. For example, they might be sent to investigate a mysterious Grimm activity in a far - off village. Ruby can quickly scout the area with her speed, while Jaune plans their approach based on the information she gathers.
One idea could be that baby Naruto somehow crosses paths with Itachi in a secret mission. Maybe Itachi is on a mission in Konoha and stumbles upon baby Naruto who has an unusual chakra flare. Itachi, being curious, decides to keep an eye on him without revealing himself. This could lead to a series of events where Itachi's actions unknowingly protect Naruto from some early threats.
One idea could be that Itachi survives his battle with Sasuke and teams up with Naruto to face a new, powerful enemy from the Otsutsuki clan. They combine their unique skills, Naruto's Rasengan and Itachi's Sharingan abilities, to take on this threat.