Well, in this fanfiction scenario, Naruto's unique abilities could be translated into the wizarding world in interesting ways. His chakra control could be like a form of magic control. He might have been a powerful wizard without even realizing it at first. If he became Harry's father, he could pass on his ninja - like skills as a different kind of magic to Harry. For example, Naruto's ability to move at high speeds could be turned into a super - fast apparition - like spell for Harry. And Naruto's experience with fighting powerful foes would make him a great mentor and father to Harry in the dangerous wizarding world.
One way this could work is through some sort of magical time - traveling or dimension - hopping accident. Maybe Naruto, in his own world, gets caught in a strange jutsu that sends him to the wizarding world of Harry Potter. Once there, he meets Harry Potter's mother, Lily, and they fall in love. Naruto, with his strong sense of justice and loyalty, would be a great father figure. He could teach Harry about the importance of friendship and never giving up, which are values that Naruto holds dear in his own story.
Well, it's a really strange crossover concept. Inuyasha is from a very different universe than Harry Potter. But if he were to be Harry's father in fanfiction, it could involve some time - travel or interdimensional magic. Maybe some dark wizard used a spell to bring Inuyasha to the wizarding world and he had a relationship with a witch. However, it would be a huge stretch of both universes' lore.
If Kurama becomes Naruto's father in fanfiction, it could completely change Naruto's character development. He might inherit more of Kurama's powers directly. For example, he could have better control over the Nine - Tails' chakra from the start, without having to struggle as much as in the original story.
Well, one way it could work is if Naruto's world somehow got merged with the dark and chaotic world of the Joker. Maybe Naruto, after facing so much pain and loss in his own world, starts to adopt the Joker's nihilistic views. He could use his ninja skills in a more unhinged way, like the Joker uses his chaos-creating abilities.
Some fanfictions might choose Hermione as the mother. This could create an interesting dynamic, as Hermione is Harry's best friend. It would bring a whole new set of relationship developments and challenges for Harry as a father.
In some fanfictions, it could be Sirius Black. Some fans like to imagine that Sirius had a deeper connection to James Potter's family than just being best friends. They might create a scenario where there was some sort of magic or prophecy involved that made Sirius more than just Harry's godfather, but his actual father in this alternate story line.
Well, in fanfiction, the writer could use a magic portal to transport Harry Potter to the Star Wars universe. Maybe he's on the run from Voldemort and stumbles upon this strange new world. Once there, he gets intrigued by the Mandalorian culture, with their cool armor and code of honor.
Well, it could happen if there was some sort of magical cross - over event. Maybe a powerful wizard accidentally casts a spell that transports Harry into the world of Pokémon, specifically the world of Eevee. And there, he gets fascinated by the cute and diverse forms of Eevee.
Well, in some fanfiction, it could be due to dark magic gone wrong. Maybe a spell was cast that had unexpected consequences and turned Harry into a basilisk. Another possibility is that some ancient magic related to the basilisk was misused or backfired on him.
Perhaps he is forced into a new situation where he has to adapt and become a warrior. For example, if Voldemort somehow manages to take over the wizarding world completely and Harry has to flee to a non - wizarding land. There, he discovers that the only way to fight back and survive is to become a warrior. So, he starts training in their ways, learning their combat styles and gradually becomes one of them.
In this kind of fanfiction, Harry might teach his children magic in a very different way from how he was taught. He would be extremely protective, having faced so many dangers himself. Maybe he'd pass on the lessons he learned from his own battles, like the importance of friendship and courage.