At first, Harry might be very suspicious of Snape's kindness. After all, in the original story, they had a rather tense relationship. But as Snape continues to be kind, Harry starts to see him in a new light. He begins to trust Snape more and more.
One example could be that Snape secretly helps Harry with his Potions work. He might leave some useful hints or books where Harry can find them. Maybe he gives Harry a potion ingredient that is hard to get when he sees Harry struggling to complete a difficult potion recipe.
It could be a very complex relationship. Harry has always had a deep - seated hatred for Snape due to Snape's treatment of him in the past. But with Dumbledore's action, Harry might be forced to see Snape in a new light. At first, it could be full of suspicion and wariness on Harry's part.
Yes, there are some fanfics with such wild and out - of - canon concepts in the Harry Potter fanfiction community. However, these often deviate greatly from the original storyline and themes of the official series.
In some fanfics, Snape may use a potion similar to the Felix Felicis, the luck potion. But instead of just bringing luck, this modified version could be used to change Harry's fate or the course of his actions. It could make Harry more inclined to make certain choices that Snape desires. Also, there could be a potion that can temporarily suppress Harry's magic, which Snape might use to keep Harry out of trouble or to protect him in a different way.
In some fanfics, Snape might punish Harry because of his perceived insolence in class. Harry has a rebellious streak, and Snape, being strict, wouldn't tolerate any behavior that he deems disrespectful to his authority as a teacher.
Perhaps it's related to Harry's association with his father, James Potter. Snape had a long - standing grudge against James, and seeing Harry might bring back those bitter memories. So, whenever Harry does something that reminds Snape of James, like being overly confident or a bit of a troublemaker, he yells at him.
In some fanfics, Snape might hurt Harry out of his long - held grudges. Snape was in love with Harry's mother, Lily, and Harry being a reminder of James, who bullied Snape in school, could trigger his negative emotions. Also, Snape's loyalty to Voldemort in the earlier days in some fan - created scenarios might lead him to target Harry, who was seen as a threat to Voldemort's plans.
He might face the challenge of acceptance. The Snape family may be hesitant to welcome Harry, given Snape's complex relationship with him at Hogwarts. Also, there could be differences in magical practices. The Snape family might have their own unique ways of doing magic that Harry has to adapt to.
The relationship can be developed by having Snape protect Harry in unexpected ways. Maybe in a fanfic, there's a plot where some dark wizards are after Harry. Snape, secretly, uses his skills to keep Harry safe. Later, when Harry discovers this, Snape has to explain his actions. This explanation can be a turning point where they start to trust each other more. Snape can then start to offer words of comfort based on his understanding of Harry's situation. They could also start to work together on some small tasks, like researching a new potion that might help Harry in his fight against the dark side, which further cements their relationship.