One common plotline is that Snape becomes a sort of secret mentor to Harry. He imparts his knowledge of the Dark Arts and Defense Against the Dark Arts in a way that the official Hogwarts curriculum doesn't cover.
Often, there are plotlines where Snape's care for Harry is tied to his love for Lily. In these fanfictions, Snape sees so much of Lily in Harry that he can't help but be drawn to protect him. This might lead to situations where Snape tries to reconcile his past with Lily and his present relationship with Harry. For instance, he might show Harry memories of Lily to help Harry understand his mother better and in doing so, deepens their bond.
One common theme is redemption. Snape's care for Harry can be seen as a part of his journey to redeem himself for his past actions and mistakes. Another theme is the power of love, as his care is often linked to his love for Lily.
In some fanfictions, Snape's care for Harry might be shown through secret protection. For example, he might keep an eye on Harry during dangerous situations at Hogwarts without Harry knowing. He could also subtly guide Harry in his studies of Potions, giving him hints that are not obvious to others.
One common theme is mentorship. Snape often takes on a role of guiding Draco, like teaching him more advanced magic or helping him navigate the complex social structure at Hogwarts. Another theme is protection. Fanfictions usually show Snape protecting Draco from harm, whether it's from other students or from the general chaos in the wizarding world.
One way is through his sacrifices. In some fanfictions, Snape makes great sacrifices to keep Harry safe. He might put himself in danger from the Death Eaters or other dark forces just to ensure Harry's well - being.
Often, you'll see plotlines where Snape's desires are tied to his need for redemption. He may see Harry as a way to atone for his past mistakes. Some fanfictions also explore a more emotional connection between them, like Snape becoming a father - figure to Harry in a way. This can involve Snape teaching Harry more about the wizarding world from his own unique perspective. There are also plotlines where Snape and Harry work together to uncover secrets about Harry's past or Hogwarts itself.
Many stories have Snape's past with Harry's mother as a backdrop to his crush. The plot might involve Snape seeing Harry as a combination of Lily and his own ideal. There could also be a plotline where Snape tries to distance himself from Harry to avoid these feelings, but is constantly drawn back.
One common plotline is that Harry stands up to Snape over unfair treatment of his friends, like Hermione or Ron. Another could be about standing up for the rights of all students against Snape's sometimes harsh disciplinary actions. There might also be a plotline where Harry stands up in defense of his own magical abilities when Snape doubts him.
One way is by secretly teaching Harry advanced magic. In some fanfictions, Snape realizes Harry's potential and takes it upon himself to give him extra lessons without anyone knowing. Another way is protecting Harry from the dark forces in Hogwarts that might target him. Snape uses his position and knowledge to keep Harry safe.
Yes. In some fanfictions, Snape might be shown protecting Harry secretly. For example, he could be watching over Harry during dangerous situations at Hogwarts, like when there are dark creatures lurking around. This shows his care in a more direct way than in the original books where it was more hidden.
One common theme could be loyalty. Harry's exclusive care for Hermione might show his unwavering loyalty to her. Another might be the exploration of their unique relationship, different from the relationships Harry has with other characters.