One of the most interesting plots could be Snape having to protect Harry in a very unexpected way. For example, in a fanfic where dark magic has been unleashed in a different form and it targets Harry specifically. Snape, despite his initial reluctance, realizes that Harry is the key to stopping it and has to put aside their differences. Another plot could involve Snape and Harry being transported to an alternate magical realm where they have to rely on each other to survive. They slowly start to understand each other's past traumas and develop a grudging respect. A third plot might be that Snape discovers a long - lost prophecy about Harry that changes his perception of him completely and he becomes his secret mentor in a much more involved way than in the original books.
Writers often explore their complex relationship by delving into their past traumas. Snape's unrequited love for Lily and his resentment towards James, which spills over to Harry, is a rich area to explore. They might show Snape being harsher on Harry in some fanfictions as a result of his own internal turmoil. Another way is by putting them in situations where they have to rely on each other. For example, in a battle against a new dark force, they are the only two with the right combination of skills and knowledge to defeat it. This forces them to set aside their differences.
Regular Harry Potter fanfiction usually aims to expand on the positive aspects of the original story, like the friendships, the magic, and the adventure. However, disturbed fanfiction often takes a darker turn. It might explore the negative emotions and events more deeply, such as the fear and pain that the characters could experience.
One common theme could be the exploration of dark magic in ways that are different from the original series. For example, fanfiction might delve deeper into the consequences of using unforgivable curses in more complex situations. Another theme could be the distortion of character relationships. Maybe a fanfiction would show a strained or abnormal relationship between Harry and his friends, like a sudden mistrust or a conflict that goes against their usual bond in the books.
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.
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.
One possible motive could be a misunderstanding. Maybe Snape is framed for something really bad, like a dark magic plot against Hogwarts. Harry, in his haste to protect the school and his friends, believes Snape is guilty and takes drastic action. Another reason could be if Snape accidentally endangers someone Harry loves dearly, like Ginny or Ron, and Harry's emotions get the better of him in the heat of the moment.
In this kind of fanfiction scenario, Snape might initially be conflicted. On one hand, he has his long - standing dislike for James Potter, Harry's father. But on the other, his sense of duty as a Hogwarts professor could kick in. He might reluctantly start to heal Harry, all the while muttering under his breath about how much trouble Harry always seems to get into, just like his father. Then, as he heals Harry, he might start to see some of Lily, Harry's mother, in him and soften a bit.