By the end of the series, after Snape's death, Harry fully realizes the sacrifices Snape has made for him. Snape's attitude towards Harry was always influenced by his love for Harry's mother, and in the end, Harry understands and respects Snape in a way he couldn't before.
In the end, Snape's character development reaches its peak when his true loyalty is revealed. His self - sacrifice and his role in the fight against Voldemort are fully exposed. He transforms from a seemingly one - dimensional 'bad - tempered teacher' to a complex and heroic figure in the eyes of the readers.
The 'Snape kills Harry' fanfiction would shatter the relationships that were built in the original series. For example, the friendship between Harry, Ron, and Hermione would be left in tatters. Hermione and Ron would be devastated and likely seek revenge. Also, Dumbledore's plan, whatever it was that involved Harry, would be completely ruined. The whole balance of good and evil in the wizarding world would be thrown into chaos.
Well, it completely flips the dynamic. In the original series, Snape was a complex character with a lot of hidden motives that were ultimately revealed to be on the side of good. If Harry kills Snape in the fanfic, it makes Harry seem more impulsive and less of the heroic figure we know. It also undermines the redemption arc that Snape had in the original story.
In this kind of fanfiction, Harry often becomes more proficient in potions and other areas that Snape is good at. His relationship with Snape also makes him more empathetic towards Snape's past and the Slytherin house in general. He may not be as quick to judge people based on their house. Also, he might develop a more complex view of the wizarding world's politics, as Snape is deeply involved in some of the darker aspects of it.
Snape's character in Harry Potter fanfictions often changes in terms of his relationship with Harry. Sometimes he is written as being less bitter. He may be more understanding of Harry's situation, especially considering Harry has lost his parents. In certain fanfictions, Snape might even be the one to help Harry with his emotional turmoil over his parents' death. He can also become more collaborative, working with Harry instead of against him. This could be due to different interpretations of his true nature that were not fully explored in the original series. Fanfiction writers often take the hints of his good side from the books and expand on them, making him a more rounded and sympathetic character in relation to Harry.
Harry starts as an innocent and somewhat naive boy. As he discovers his true identity as a wizard and his connection to Voldemort, he begins to grow. He learns about friendship, loyalty, and sacrifice. For example, his friendship with Ron and Hermione helps him face many challenges.
Nick's attitude undergoes a significant transformation. At the beginning, he might be naive and optimistic, but as the story progresses, he becomes more cynical and disillusioned due to the experiences he goes through.
The 'snape is harry's father fanfiction' can transform the entire narrative. Harry's identity and self - discovery journey would be on a whole new path. He might not have grown up with the Dursleys if Snape was his father. Snape would have likely had different motives for his actions throughout Harry's years at Hogwarts. The relationships with his friends, like Ron and Hermione, could also be affected as they might view Harry's new family connection in different ways. It basically takes the core of the Harry Potter story and gives it a huge twist.
Harry in this fanfiction might be a lot more complex. His identity is no longer that of the Boy Who Lived in the traditional sense. He has to come to terms with the fact that his parents are two very different and controversial figures. He may become more of an outcast, even among his friends at Hogwarts. His sense of right and wrong could be more blurred, as he has the influence of Bellatrix's dark ways and Snape's own morally ambiguous actions. He might be constantly questioning his own nature and whether he is destined to follow a path of good or evil.
Snape's character may become more empathetic. At first, he might be his usual cold self, but as he takes care of Harry, he starts to understand Harry's situation better and shows more kindness.