A 'Harry Potter adopts Naruto' fanfiction could see Naruto being amazed by the magic of the wizarding world. He might constantly ask Harry about how everything works. Harry would have to explain things like the Floo Network and thestrals to him. Naruto could also share his stories of the Hidden Leaf Village with Harry and his friends. This could lead to new friendships being formed, like Naruto becoming good friends with Ron and Hermione. And perhaps Naruto would use his shadow clone jutsu to help out during Quidditch matches, either by confusing the opposing team or helping to search for the Snitch.
In this kind of fanfiction, Percy could introduce Harry to a whole new world of Greek mythology. Harry might learn about demigods and their powers. Percy could help Harry better understand his own magic in a different way, maybe by comparing it to the powers of the demigods. Also, Harry would probably be introduced to Camp Half - Blood and make new friends there.
If Sally Jackson adopts Harry Potter in fanfiction, it could be really interesting. Sally is such a loving and strong mother figure. Harry would probably have a more stable home life compared to what he had with the Dursleys. He might also get to know Percy Jackson and they could share their magical experiences. And who knows, he could end up being part of some epic quests involving both the wizarding world and the world of Greek mythology.
In such a fanfiction scenario, Harry might be exposed to a very different upbringing. Lucius could try to indoctrinate Harry with pure - blood supremacist ideas at first. But as time goes on, Harry's strong sense of justice might conflict with Lucius's beliefs. Maybe Harry would gradually change Lucius's view on Muggle - borns, or he could use his influence within the Malfoy family to bring about some positive changes in the wizarding world's view on blood purity.
In such a fanfiction, Harry might see the potential in young Severus that others overlooked. He could protect Severus from the bullies at Hogwarts. Harry, having experienced his own share of hardships, would understand Severus's situation to some extent and try to give him a better childhood, perhaps even guiding him to use his magic in a more positive way.
Well, in such a fanfiction, Alaric could use his knowledge to help Harry with his magical studies in a different way than at Hogwarts. He might introduce Harry to some new forms of magic or ways of defending himself that are more in line with his own experiences.
One possibility is that Naruto's life would take a very different turn. Azula, being a complex and often manipulative character, might try to shape Naruto according to her own ideals. She could train Naruto in her own style of combat and strategy, which would be a strange mix of Naruto's own energetic and straightforward fighting style with Azula's more calculated and devious approach.
In this fanfiction, Naruto might teach Fuu about the values of the Hidden Leaf. He could introduce her to his friends and show her a different way of life compared to what she's known.
In this kind of fanfiction, Naruto might teach Kawaki about the values of the Hidden Leaf Village. Maybe he'd show Kawaki how to control his powers better. For example, Naruto could take Kawaki on training sessions similar to the ones he had with Jiraiya.
Well, Elrond could use his ancient wisdom to train Harry in magic that's different from Hogwarts. Maybe he'd teach Harry about elven magic, which could give Harry an edge in fighting Voldemort. Elrond's knowledge of ancient spells and potions could be a great asset to Harry.
Well, in such a fanfic, Tony Stark would likely introduce Harry to a world of high - tech. Harry might get some cool Iron Man - like gadgets to use against the dark forces in the wizarding world. For example, he could have a device that detects dark magic, much like Stark's sensors detect threats.