If Snape raised Harry, Harry would likely become a much more skilled potions master at an earlier age. Snape's knowledge and strict teaching methods would push Harry to excel in that area.
In the fanfiction, their relationship would be complex. Snape would constantly be reminded of Harry's father, but also grow to love Harry in his own way. Harry would be exposed to Snape's darker side as well as his hidden kindness. For example, Snape might show Harry some of the more dangerous and forbidden magic, but also teach him the importance of self - control and responsibility when using it.
One idea could be that Snape takes Harry in secretly. He teaches Harry advanced potions and magic in a more personal way, away from the prying eyes of Hogwarts. Harry begins to see Snape in a new light, not as the mean professor but as a strict yet caring guardian.
In such a fanfiction, Harry might see the potential in young Severus that others overlooked. He could protect Severus from the bullies at Hogwarts. Harry, having experienced his own share of hardships, would understand Severus's situation to some extent and try to give him a better childhood, perhaps even guiding him to use his magic in a more positive way.
Well, Harry might become a much more serious student. Snape, being strict, could push Harry to excel in Potions and Defence Against the Dark Arts even more. He might also instill in Harry a sense of discipline that he didn't have before. And Harry could gain a different perspective on Snape, perhaps seeing him as a father figure over time.
One way this could occur in fanfiction is through a magical mishap. Maybe a spell goes wrong and binds their fates together in an unexpected way. They are then forced to navigate this new relationship. Snape, who has always been a complex character, might find in Harry a new purpose or a chance at redemption. Harry, on the other hand, could see Snape in a different light and over time, their relationship could transform into a romantic one, leading to marriage as a logical conclusion in the fan - created story.
Well, in such a fanfiction, Bill might teach Harry about the wizarding world from a different perspective. Maybe he'd introduce Harry to more about the magical creatures he's encountered during his work with Gringotts. He could also pass on some of the Weasley family's unique traditions and values, which would be a contrast to what Harry has experienced at the Dursleys.
Well, first of all, Harry would have to adjust to the new setting of Forks. He would be raising Teddy in a place very different from the wizarding world. Teddy might start to show some interesting magical abilities that would be quite a novelty in Forks. Harry would have to be careful not to expose magic too much, while still teaching Teddy about his heritage. And he would probably make some new friends in Forks who would be intrigued by his different ways.
It would be extremely complex. Harry might initially be in disbelief and struggle to accept Snape as his father. Snape, on the other hand, would probably be very strict but also deeply protective in his own way.
If Snape finds Harry Potter fanfiction, he'd probably be quite irritated. He has a rather stern and no - nonsense personality. He might see it as a frivolous waste of time and be disdainful of the creative liberties often taken in fanfiction. He'd likely scoff at the idea of people writing about his students and the wizarding world in such unregulated ways.
One heartwarming scene could be when Snape helps Harry with his potions homework in a more patient way than he ever did in the original books. He might sit down with Harry and explain the intricacies of the ingredients and brewing processes, showing a side of himself that is both caring and knowledgeable.
A lot of fanfic writers will create unique storylines for Snape's courtship. They might introduce an original character who manages to break through Snape's tough exterior. His courtship would then involve him struggling with his own insecurities and his reputation. This character might see the good in him that others overlook. There could be moments of tension and misunderstanding, but also deep, meaningful conversations as they get to know each other better.