One possibility is that Harry would grow up with a very different set of skills. Silvers Rayleigh is a skilled pirate in the One Piece universe. He could teach Harry about combat in a more physical and swashbuckling way compared to the magic he learns at Hogwarts. Harry might be more of a fighter with a sword or his fists, while still having his inherent magical abilities.
Well, in such a fanfiction, Harry's view of good and evil might be different. Growing up with Rayleigh, he'd be exposed to a different moral code. Pirates have their own sense of justice which may not always align with the black - and - white view of good and evil in the wizarding world. This could lead to some interesting internal conflicts for Harry as he tries to figure out where he stands in relation to both worlds.
His magic might develop in a more practical and combat - oriented way. Instead of just using magic for spells in a classroom or dueling, he could learn to use it in the heat of battle at sea. For example, he might learn to quickly cast protective spells while on a ship during an enemy attack.
Well, this fanfiction concept is really interesting. Since Sesshomaru is from a world of demons and has his own code of honor and power structure, Harry growing up with him would be a huge departure from the original story. Harry would likely be exposed to different forms of combat and survival skills. His view of good and evil might also be more nuanced as Sesshomaru's world doesn't have the same black - and - white view of morality as the wizarding world. This could lead to some really unique adventures and character development for Harry.
Well, the story might have Harry being raised in a very different environment. Jack Sparrow is not one to follow the rules, so Harry would be exposed to a lot of spontaneity. He may not be as uptight about the pure - blood and half - blood concepts in the wizarding world. His dueling skills could be a mix of wizard magic and Jack's swashbuckling fighting style. He could use his wand like a sword at times, and his spells might have a nautical theme, like casting 'Aqua Eructo' with a flourish that Jack would be proud of.
One aspect could be that Tony Dinozzo would instill in Harry a sense of justice that is more in line with the Muggle way. Harry would be exposed to the legal system in the Muggle world through Tony. This would give him a different perspective when dealing with the Ministry of Magic's often - flawed justice system in the wizarding world. He might be more likely to question authority and fight for what he believes is right, whether it's in Hogwarts or in the wider wizarding community, influenced by Tony's no - nonsense attitude towards right and wrong.
If it's a Naruto - son of Silver Rayleigh fanfiction, it might involve a lot of world - building. The author would have to figure out how to blend the Naruto and One Piece universes. Naruto might grow up with a different set of values, influenced by Rayleigh's pirate ways. He could be more of a lone wolf, yet still hold onto his original Naruto - like determination to protect his friends and village. It could also lead to some really cool fight scenes where Naruto combines his ninja techniques with Rayleigh - inspired powers.
One possible plot could be that the Doctor, with his time - traveling abilities, rescues Harry from the Dursleys at a young age. He then takes Harry on adventures across time and space, teaching him about different cultures and magic from various planets. Harry might learn unique forms of magic that are different from what he would have learned at Hogwarts, and he could use these new skills to fight against threats in both the wizarding world and the Doctor's universe.
If Harry was raised at Potter Manor in fanfiction, it would change a great deal. He could have a more stable support system. Instead of being bullied and neglected, he'd be surrounded by the remnants of his family's magic. The manor itself might have a library filled with rare magical tomes that he could study, and perhaps there would be a family - appointed tutor for him. This would make him more confident and knowledgeable when he enters Hogwarts, and his relationships with his classmates might be different as he wouldn't have the same insecurities.
Well, it could involve Harry growing up with the Delacour family's unique culture. Maybe he'd learn different kinds of magic that the Delacours are known for. He might also have a different personality, influenced by their flamboyant and refined ways.
In a story where Harry is raised by a boggart, he could have a very distorted view of the world. The boggart, not being a normal caregiver, might not be able to provide the love and stability that a normal family would. So, Harry might be more withdrawn and distrustful. He might also have a hard time making friends at Hogwarts as his upbringing by a boggart could have made him seem strange to other students.
The story could show Harry being an outcast among wizards at first because of his mermaid - influenced behavior. For example, he might not understand some of the basic social norms in the wizarding world. However, his mermaid - raised skills could also make him a very powerful wizard in certain areas, like water - based spells or divination related to the sea.