One popular fanfiction with this concept might be 'The Unthinkable' (this is just an example, not an actual well - known title with this exact plot). In many such fanfictions, it explores how Snape's personality would influence Harry's upbringing. Snape, being strict yet intelligent, could instill in Harry a different set of values compared to the Dursleys or even Dumbledore's influence in the original series.
In this fanfiction, Snape might raise Harry in a more secluded environment. He would try to protect Harry from the wizarding world's prying eyes as much as possible. Harry would learn about his parents from Snape's perspective, which could be a very different view compared to what he would have heard otherwise. Snape would also train Harry to be more self - reliant and less impulsive, as he knows the danger that Harry's fame and the prophecy bring.
In some fanfictions, the plot could revolve around Snape teaching Harry about the Dark Arts in a way that Dumbledore never would. Harry might become more proficient in defensive spells against the Dark Arts but also be more exposed to the darker side of magic. This could create a moral dilemma for Harry as he grows up. Additionally, the relationship between Harry and Draco Malfoy could be completely different, as Snape's influence on Harry might make him less likely to be enemies with Draco from the start.
The plot could take a really interesting turn when it comes to Voldemort. Since Snape is raising Harry, he might train Harry in a way that Voldemort doesn't expect. Maybe Harry would be more of a spy in the dark side's camp. Snape could also use his position to mislead Voldemort about Harry's true abilities and intentions. This would create a whole new set of challenges and power dynamics in the fight against the Dark Lord. Harry's loyalties would be constantly tested, and his relationship with Snape would be even more crucial to the story.
One interesting plot could be Snape raising Harry while secretly training him in advanced potions and dark arts defenses. Harry would grow up with a different perspective on Snape, seeing him as a strict but caring father figure. Another plot might involve Snape having to protect Harry from other dark wizards who suspect Harry's true potential. This could lead to some intense magical battles and Snape using his knowledge and skills to keep Harry safe.
Snape's character development in these stories can be quite extensive. He starts off as a somewhat cold and distant figure, but as he raises Harry, he begins to soften. He might start to show more humor, which is a side of him we rarely saw in the original books. He also becomes more forgiving. For example, he might forgive Harry for the small mistakes he makes as a child growing up. And his relationship with other Hogwarts staff may improve as they see the positive influence he has on Harry. Overall, his character goes from a solitary, bitter man to a more caring and involved member of the wizarding world.
Well, this type of fanfiction changes the original story in multiple ways. Firstly, the character of Harry is likely to be more reserved and perhaps more studious under Snape's care. Snape, being a strict teacher, would enforce discipline in Harry's study of magic. Secondly, the whole mystery around Harry's parents and his role in the wizarding world might be revealed to him in a different order. Since Snape has his own secrets and grudges related to James Potter, he might tell Harry things in a different light compared to Dumbledore. Moreover, the relationship between Snape and the other Hogwarts faculty would also change. They would have to accept Snape as Harry's guardian, which could lead to some interesting power dynamics and storylines at Hogwarts.
Harry's sense of humor might be different. Instead of the quick - witted and sometimes sarcastic humor he had in the original story, he could have a drier, more understated sense of humor. Snape's own rather caustic personality could influence Harry to be more subtle in his jokes and remarks, and perhaps a bit more cynical at times.
One interesting plot idea could be that Snape, in raising Harry, teaches him advanced potions from a very young age. Harry becomes a prodigy in potions, much to the surprise of the other Hogwarts students. Another idea is that Snape's strict but fair upbringing makes Harry more reserved and less impulsive, which changes the way he interacts with his friends. He might be more cautious and calculating in his actions, especially when dealing with enemies like Voldemort.
His personality would be shaped by Snape's cynicism. Harry would be less trusting of others at first glance. He would have a sharper tongue, like Snape, but also a deeper sense of loyalty. Since Snape is often alone, Harry might be more independent and used to handling things on his own. He would also have a great respect for the art of potions and perhaps a more nuanced view of the Slytherin house.