What could be the plot in a fanfiction where Harry Potter raises his cousin?

One possibility is that Harry discovers a long - lost sister and takes on the role of a protector. He might teach her magic in secret, away from the prying eyes of the wizarding world authorities. Maybe they live in a hidden cottage and he passes on the skills he learned at Hogwarts to her.

In such a fanfiction, perhaps Harry Potter feels a sense of duty to raise Delphini despite her being Voldemort's daughter. He might see her as a chance to break the cycle of dark magic. He could raise her with the values of love and friendship, trying to turn her into a force for good in the wizarding world.

Well, perhaps in the fanfiction, Harry's little sister has some unique magical ability that attracts unwanted attention. Harry then has to raise her while constantly fending off those who would use her for their own purposes. He would have to balance being a brother and a protector, making sure she grows up happy and safe in a rather dangerous magical environment. He might also introduce her to his friends at Hogwarts for support and guidance as she gets older.

One possible plot could be that the female Harry Potter, using her magic skills, finds Naruto in a different dimension or perhaps when she accidentally travels to the Naruto universe. She decides to take him under her wing. She could teach him some basic magic concepts, which Naruto might adapt in his own unique way for his ninja skills. For example, he could use the idea of transfiguration to change the appearance of his shadow clones in a more complex way.

Well, in a 'harry raises his cousin fanfic', it could involve Harry having to take care of his cousin in a situation where the normal family structure has broken down. Maybe his aunt and uncle are unable to look after the cousin for some reason, like they've been put in a magical coma or something. Harry then has to step up and teach his cousin about the wizarding world, how to handle magic, and also about normal life things like school and making friends. He might face difficulties because his cousin could be resistant to the new world he's being introduced to, or Harry might struggle with his own insecurities about being a good caregiver.

Well, perhaps the plot could involve Harry having to fend for himself from a very young age in the wizarding world. He might have to figure out magic on his own, without much guidance from adults. Maybe he starts exploring the secrets of Hogwarts by himself earlier than in the original story, leading to all sorts of unexpected adventures.

One possibility could be that Harry, with his knowledge of magic and experience in fighting dark forces, takes Tsuna under his wing in the magical world. He could teach Tsuna about different spells and how to handle magical creatures, which would be a new and exciting experience for Tsuna who is used to his own world in 'Katekyo Hitman Reborn!'.

Well, in this fanfiction, Kakashi might introduce Harry to the concept of chakra. Since Harry has magic, Kakashi could find a way to combine the two powers. Maybe Harry would learn to use chakra to enhance his spell - casting speed or accuracy. And Kakashi would also help Harry deal with his emotional traumas, like the death of his parents, in a more ninja - like, stoic way.

Well, in this fanfiction, Deadpool might raise Harry Potter in a world where the two universes collide. Deadpool could introduce Harry to the concept of fourth - wall breaking, which would be really strange for Harry. He could also take Harry on adventures that involve both the wizarding world and Deadpool's own crazy world filled with mercenaries and mutants, leading to some really unique and comical situations.

Maybe Harry starts raising chickens because he wants to have a normal, non - magical hobby. He finds some regular Muggle - like chickens in a nearby village. As he raises them, he realizes that they have an uncanny ability to sense dark magic. So, they become like an early warning system for any approaching danger at Hogwarts. This could lead to all sorts of adventures where Harry has to protect his chickens from dark wizards who want to use their power for evil.