The story could focus on how Harry's family life shapes his magical abilities. With his parents' guidance, he could develop unique spells or magical techniques. His parents might also introduce him to the wider wizarding community in a different way than in the original story. Maybe they take him on trips to different magical countries, exposing him to diverse magic cultures, which in turn makes him a more well - rounded and powerful wizard.
In such a fanfiction, perhaps Harry would have a very different personality. Growing up with his parents, he would be more confident and less of an outcast. He might be popular at Hogwarts from the start. His relationship with his friends would also be different. Instead of the trio being formed out of shared loneliness, they could be a group of confident young wizards coming together for adventures and to uphold the values of the wizarding world that Harry's parents instilled in him.
One possible plot could be that Harry grows up in a loving and magical home. He gets to learn magic from his parents at a very early age. His father, James, might teach him Quidditch skills right in their backyard. His mother, Lily, could pass on her knowledge of potions and herbology. They would also protect him from the dark forces that are still out there, perhaps leading to some epic battles where the family stands united against the remnants of Voldemort's followers.
The plot would change drastically. Harry would not be living with the Dursleys, so there would be no need for him to escape that horrible situation. Voldemort might have a harder time targeting him as his parents would be on high alert. There would be no letter - hunting drama. Also, his relationship with Snape would be different as his father was Snape's rival. His parents could have taught him some advanced magic from a young age, which would make him stand out at Hogwarts in a different way than in the original story.
In such a fanfiction, perhaps the story could show Harry growing up with a different kind of family dynamic. His grandparents might instill in him values that are different from what he would have learned at the Dursleys'. For example, they could be more open about his magical heritage from the start, which would lead to him being more confident in his abilities as he grows. Maybe they would also have their own set of magical friends and connections that would introduce Harry to a different side of the wizarding world earlier.
One possible plot could be that with his mother alive, Harry grows up in a loving and magical home environment. He might have a normal childhood in the wizarding world, without the abuse from the Dursleys. His mother could teach him magic from an early age, and he would be more confident and less scarred. He might also form different friendships as he doesn't have the 'outsider' experience at Hogwarts that he had in the original story.
The plot could start with Naruto growing up in a happy family. He'd learn about the village and ninja ways in a more positive environment. His first missions might be more successful as he has his parents' advice. As he grows, he might face threats to the village earlier, but with his family by his side, he'd be better equipped to handle them.
Perhaps in the fanfiction, Harry's parents are actually trapped in a sort of limbo. They manage to break free and come to Harry's aid just when he is at his lowest point. They might have gained special powers in the limbo which they use to save Harry. For instance, they could be able to freeze time momentarily and remove Harry from a dangerous situation. Then, they start to train Harry in magic that is not taught at Hogwarts, magic that was passed down through their family but was lost when they died.
He would be more secure. In the original story, Harry grew up without his parents and was constantly seeking a sense of family. If raised by his parents, he would have that family bond from the start. He would likely be more outgoing and less introverted as he would have a stable home environment.
One possible plot could be that his grandfather, perhaps a powerful but reclusive wizard, trains Harry in unique magic from a young age. Harry might grow up with a different set of values and skills compared to the original story. He could have a closer bond with the wizarding world's older traditions.
In fanfiction where Harry Potter is raised by his fans, the plot could involve a lot of interesting scenarios. For example, he might be exposed to a much more modern and diverse view of the wizarding world from the start. Fans could introduce him to different magical cultures that were not fully explored in the original books. He might also grow up with a stronger sense of self - worth as fans would likely shower him with love and support, which could make him more confident in his abilities.
In such a fanfiction, Naruto would likely grow up with a strong sense of family. He'd be trained by his father, Minato, from an early age, perhaps becoming a prodigy even faster. His mother, Kushina, would fill his life with love and warmth, and he might not have the same underdog status as in the original. He could be more confident and less of a prankster, having a stable home environment.
This is a very dark and unorthodox concept. In a possible plot, perhaps an evil force could be manipulating Harry's mind, making him believe his parents are a threat to the wizarding world. But this goes completely against the essence of the original story where Harry loves and respects his parents.