Snape would probably be very conflicted. On one hand, he has a long - standing grudge against James Potter, Harry's father. But on the other hand, he loved Harry's mother, Lily. So, he might be cold at first, but then his sense of protecting Lily's son could kick in. He would likely be very strict with Harry, as he is with all his students, but also secretly keep an eye on him to make sure he's safe.
Perhaps in the fanfiction, Snape finds Harry lost in the Forbidden Forest. Snape, being a master of potions and having knowledge of the forest's secrets, takes Harry under his wing. This could then explore a different dynamic between them, where Harry starts to see Snape in a new light and Snape has to confront his past actions and grudges. It might also involve Snape teaching Harry some advanced magic that Dumbledore had not yet introduced to him.
In some fanfictions, Snape might use his advanced knowledge of potions to create a special concoction to heal Harry. He could draw on his skills in Herbology as well to find rare ingredients for the potion.
At first, Severus would probably be very suspicious of Harry. After all, Harry is an unknown figure suddenly appearing. But Harry, being the friendly person he is, would try to break the ice. He might start by complimenting Severus on his potion - making skills, which Severus is already quite good at even as a young boy. Their interaction would be a bit tense initially, but as they start to understand each other more, they could become friends or at least allies.
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.
One more to consider is 'Snape: Beyond the Surface'. In this story, the author explores Snape's relationships with other characters like Dumbledore and McGonagall. It shows how his interactions with them were not always as straightforward as they seemed in the original books and adds more depth to his character.
One great Snape fanfiction is 'The Prince's Tale Redux'. It delves deeper into Snape's relationship with Lily. It shows his internal struggles and how his love for her influenced his actions throughout the series. It gives a more in - depth look at his character than what was shown in the original books.
In some fanfictions, Snape is indeed portrayed as Harry Potter's father. Fanfiction allows for creative reinterpretations of the original story, and this is one such interesting deviation from the canon where Snape's complex relationship with Harry takes on a whole new dimension.
As a Harry Potter fan, I could try to write some Snape/Hermione fan articles. Here's a Snape/Hermione Doujinshi article I wrote. I hope you'll like it:
Hermione sat next to Snape in Hogwarts class. Their hands were tightly clasped as if they were silently communicating something. Although their identities and positions were different, their understanding and respect for each other was obvious.
"Hermione, I want to say something to you," said Snape, his voice low and firm.
Hermione looked up into Snape's eyes and felt an irresistible attraction.
"What is it?" she asked.
"I have special feelings for you." "But I have to hide because I'm a wizard and you're a Muggle."
Hermione's heart raced and she felt a strong surge of emotion. She did not know whether she should be surprised, but she did feel something unusual.
"I have the same feeling." Hermione said,"I don't know if this is right, but I think we should be together."
A faint smile appeared on Snape's face. It was an imperceptible smile, but it warmed Hermione.
"I agree." "But we must be careful," he said,"because the Wizarding world may turn against us."
Hermione nodded. She knew Snape's concern was not unfounded. However, she did not give up because she had seen Snape's sincere feelings and his loyalty to Harry.
"I will always be by your side." Hermione said,"No matter what happens, I will always support you."
Snape's heart was filled with gratitude as he took Hermione's hand, and both of them were filled with happiness. They stared at each other in silence until the bell rang.
Before leaving the classroom, the two of them hugged each other affectionately. Their hearts were filled with love.
The development could also be due to the way the author writes Snape's backstory in the fanfic. If the author delves deeper into Snape's past, his difficult childhood, and his love for Harry's mother, Harry might start to understand Snape better. This understanding leads to admiration as Harry realizes that Snape is not just the strict and seemingly cruel professor he thought he was.