Well, Naruto as a genie would be a really cool idea for a fanfiction. His character already has a strong sense of justice and a big heart. As a genie, he would be able to spread his positive influence even more widely. Imagine Naruto granting the wish of a poor village for food and resources. He could also use his genie powers to create illusions on a grand scale, fooling the enemies of the village. And his bottle or lamp (where he is trapped as a genie) could be hidden in some super - secret location in the Hidden Leaf.
One thing that could happen is that Naruto's friends would be really surprised. Sasuke might be a bit skeptical at first, but then see the potential of Naruto's new powers. Naruto could grant Sakura's wish to become a better medical ninja by giving her some special genie - granted knowledge. His powers could also attract the attention of the Akatsuki, who might try to capture him to use his genie abilities for their own evil plans.
Well, if Harry Potter becomes a genie in fanfiction, he could use his magic in very different ways. He might be able to grant wishes, which would be a huge change from his usual spell - casting. For example, he could grant the wishes of his friends like Hermione and Ron. Maybe Hermione would wish for all the knowledge in the world to be easily accessible, and Harry as a genie could make it so.
He could ask for the genie to make Sasuke come back to Konoha for good. Sasuke's departure has always been a big issue for Naruto. He misses his friend and wants to bring him back to the village where he belongs. With the genie's help, Naruto might be able to achieve this and finally have his best friend back by his side, and they could continue to protect Konoha together.
It could be that Naruto discovers a magical object that turns him into a genie. And as a genie, he has to navigate the complex politics of the ninja world. For example, a powerful daimyo might wish for Naruto to give him military power, and Naruto has to figure out how to handle that without causing chaos.
The story would change drastically. The whole dynamic of the wizarding world would be different. Instead of fighting dark wizards with spells, Harry would be dealing with the implications of being a genie. His relationships with other characters would shift as they would now see him as a being with the power to grant wishes.
I'm not entirely sure specifically as it could be a very unique and perhaps not widely known fanfiction. It might involve some sort of strange or creative concept within the Naruto universe where a genie lamp has some odd sucking ability. But without reading it, it's hard to say for sure.
If Naruto meets a genie in fanfiction, he might wish for power to protect his village better. For example, he could wish for a new jutsu that can defeat any enemy without harming his friends. This would make him even more of a hero in Konoha.
In a 'Naruto meets a Genie' fanfiction, Naruto could wish for the power to bring back his parents. The genie might be hesitant at first because bringing the dead back is a complex matter. But Naruto's determination could convince the genie to find a way. Maybe it would lead to a journey through different dimensions to find their souls and reunite them with their bodies.
One common theme is self - discovery. Naruto often discovers new sides of himself with the help of the genie and his interactions within the harem. For example, he might learn about his own desires and how to handle relationships better.