One possible plot could be that Severus takes Harry under his wing to protect him from the dark forces at Hogwarts. Maybe he discovers some unique magical abilities in Harry that others have overlooked.
Well, it might be about Severus mentoring Harry in potions in a very special way. Since Harry is like his 'little boy' in this fanfiction, Severus could be extra patient and teach Harry things not just about potions but also about the wizarding world's history and secrets. He could be like a father figure to Harry, guiding him through the challenges at school and in the fight against Voldemort.
Obviously, Harry and Severus are the main characters. Harry is the one who is being sort of 'adopted' in a way by Severus in this fanfiction concept.
Well, perhaps the plot could start with Snape having some sort of magical transformation that allows him to carry and give birth to Harry. Then, as Harry grows up, Snape would have to deal with his own dark past while trying to protect Harry from the same fate. He might be a strict but loving mother, teaching Harry both light and dark magic in a more balanced way than in the original story.
In a fanfiction with this premise, the plot might involve Harry being raised by the Dursleys as normal, but then strange things start to happen that make him question his origins. Maybe he has some unexpected magical abilities that are a result of his unique parentage. He could then start to search for the truth, which leads him to uncover secrets about Severus and Voldemort's past relationship and how he came to be. Along the way, he would have to deal with the consequences of this new knowledge, both in terms of his own self - image and how the wizarding world views him.
Perhaps in this fanfiction, Harry is actually a pet in a magical, alternate reality where Severus is a powerful wizard with a penchant for collecting unique magical creatures. Harry, in his pet form, might hold some sort of special power or significance that Severus is eager to uncover. This could lead to adventures as Severus tries to unlock the secrets within Harry while also keeping him safe from other dark wizards who might want to steal Harry for their own purposes.
Maybe there's a magical spell gone wrong that links their fates to the Panthers. So they have to work together to figure out how to break the spell. Along the way, they realize they both have a deep passion for the team. They start to respect each other more as they deal with the magical and Muggle aspects related to the Panthers.
One possibility is that Harry discovers some dark secret about Severus that makes him feel he can no longer stay in the same place as him. For example, if he finds out Severus had a hand in some past event that endangered his friends. So he decides to leave to protect himself and those he cares about.
Yes, there are likely fanfictions out there with such a concept. Fanfiction writers often come up with creative and out - of - the - box ideas. They might explore how Snape's relationship with Harry could be different if he were his mother in an alternate universe. This could involve re - imagining the entire story with new dynamics between the characters.
A possible plot could be that Voldemort has a change of heart (maybe due to some ancient magic or prophecy) and realizes he needs Harry and Severus. Harry, on the other hand, sees an opportunity to end the cycle of violence. Severus, with his knowledge of both dark and light magic, helps them understand each other. They could then embark on a journey to unite the wizarding world, facing challenges like the resistance from the Death Eaters who don't want Voldemort to change, and the mistrust from the Order of the Phoenix who are skeptical of Harry's new alliance. Along the way, they also discover new magical abilities within themselves and each other, which helps them in their quest.
One possible plot could be that Severus discovers the extent of Harry's abuse at the Dursleys. He decides to take Harry in out of a sense of duty or perhaps a hidden soft spot for the boy. He then has to teach Harry about magic in a more personal and nurturing way, different from Hogwarts. They might also face opposition from the wizarding community who question Severus' motives.
The plot might start with Harry having strange dreams or feelings that lead him to realize his connection to Lucius and Severus. As they come together, they find that they have to hide their relationship from the Death Eaters (in Lucius' case) and Dumbledore's side (initially, as it's so unexpected). They could also be on a quest to find out the origin of this bond, which might be related to some ancient magic. During this journey, they learn about each other's pasts, like Severus' love for Harry's mother and Lucius' family history, and how it all ties into their present relationship.