Well, one way could be through a magical portal that connects the wizarding world of Harry Potter to the feudal Japan world where Sesshomaru exists. Harry could inherit some of Sesshomaru's traits like his inhuman strength or his sense of pride. He might use his magic in a more combat - like way similar to Sesshomaru's sword fighting.
In this fanfiction, it could start with Harry having strange dreams about a white - haired figure (Sesshomaru). As he investigates, he discovers his connection. He then might be trained in new ways of combat by an old acquaintance of Sesshomaru who has been watching over him. Harry could bring new ideas to the wizarding world from Sesshomaru's world, like different forms of magic that are more physical and primal, and also introduce the concept of demons to the wizards who have never encountered such beings.
One way could be to create a multiverse scenario. Maybe in a special universe, the Amazonian bloodline somehow gets intertwined with the ninja world. Naruto could inherit some of Wonder Woman's powers like super strength and agility, which he could then use in his ninja battles in a unique way.
Well, one way could be that Naruto inherits some of Zeus's powers like control over lightning, which he could then combine with his own chakra-based abilities. For example, he might be able to create super - powerful lightning - based jutsus that are far more destructive than his regular Rasengan. Another aspect could be the cultural clash. Naruto, coming from the Hidden Leaf Village in a ninja - based world, would have to deal with the very different world of Greek mythology where Zeus rules. He could be seen as an oddity, and this could lead to various adventures and conflicts as he tries to find his place in this new, strange world that is somehow related to his heritage.
In this kind of fanfiction, it might start with Orochimaru's plan to create a powerful heir in a different world. He might use a powerful spell to transfer his essence into James Potter, which results in Harry being born with Orochimaru's traits. Harry could then grow up with an inclination towards dark magic and a different understanding of the wizarding world, constantly struggling between the light side he was supposed to be on and the dark side from Orochimaru.
Well, one way it could work is through some sort of multiverse concept. Maybe in a strange, alternate universe, the magic of the Harry Potter world and the mutant abilities in the X - Men world are somehow related. Charles Xavier's telepathic powers could have a connection to the magic that runs in Harry's family. For example, the mind - reading ability could be seen as a form of magic in the Potterverse. And Harry, being the grandson, could inherit some unique combination of powers.
Yes, there might be such a fanfiction out there. Fanfiction writers often come up with creative and unexpected crossovers like this. They like to blend different fictional universes to create unique and interesting stories. It allows fans to explore 'what if' scenarios that the original creators might not have thought of.
One way this could unfold is by exploring the magical abilities Harry already has from the Potter universe and combining them with the godly powers he might inherit from Odin. For example, his ability to use the Patronus charm could be enhanced with Odin's power over light and protection. Maybe in this fanfiction, Harry would have to face Voldemort in a new way, using not only his Gryffindor courage but also the strategic wisdom of Odin. He could also have new allies from the Norse mythology realm, like Thor or Loki, who would either help or hinder his fight against the Dark Lord.
Well, for starters, the story could focus on how Harry discovers his true parentage. It would be a shock to him, no doubt. His Hogwarts experience would be drastically different. He might not rely as much on his friends as he did in the original story, instead using his Deathstroke - inherited skills to solve problems on his own more often. And his relationship with Dumbledore could be strained as Dumbledore tries to guide him while Harry is conflicted between his two very different heritages.
Perhaps his parents were part of a secret and evil organization all along. They pretended to be good but in fact were planning something big and Harry was just a pawn in their plan. So they betrayed him by leaving him exposed to danger or even trying to harm him directly. In the fanfiction, Harry could then go on a journey to discover the truth about his parents and their real motives.
One way could be through a dark magic spell that was secretly cast long ago. Maybe Voldemort had a plan to create a powerful heir, and he used some complex magic on Harry's mother. In this fanfiction, Harry might struggle with his new identity, feeling torn between the good he was raised with and the dark heritage from Voldemort. He could have inner battles over his natural inclination towards dark magic due to his bloodline, while also trying to resist it because of his friends and the values he learned at Hogwarts.
Well, one way could be by exploring the clash of two very different magical worlds. Harry would have to deal with the expectations of the wizarding world from his Potter side and the dark, otherworldly nature of being Lucifer's son. Maybe he'd have new and strange powers that would both terrify and amaze his friends at Hogwarts.