In this fanfiction, it might be that Snape sees Harry in a vulnerable state during winter break. Maybe Harry is being bullied by some Slytherins even during the break at Hogwarts. Snape, despite his usual dislike for Harry, steps in to protect him. This action could start to change Harry's perception of Snape, and they could form an unlikely alliance. As time passes, Snape could start to share some of his own experiences with Harry, which helps Harry grow not just as a wizard but also as a person.
One possible plot could be that Snape discovers Harry is struggling with some dark magic related nightmares during winter break. Snape, being an expert in the Dark Arts, decides to help Harry understand and overcome these nightmares. He uses his knowledge of potions and spells to create a remedy for Harry. Along the way, they have deep conversations about Harry's parents and Snape's past relationship with them. This interaction could lead to a new understanding and a strange sort of friendship between the two.
The main characters are clearly Snape and Harry. Snape, the strict and often misunderstood Potions master, and Harry, the famous Boy - Who - Lived.
The plot could develop with Harry initially being suspicious of Snape's help but gradually realizing Snape's true intentions.
Snape might use his potions knowledge to brew a remedy for Harry's illness. Maybe he gives Harry a special potion that eases his symptoms and helps him recover faster.
Maybe Hermione has lost her confidence in her magical abilities due to some traumatic event. Snape, in his own gruff way, decides to mentor her. He helps her recover by guiding her through difficult spells and magical concepts she had previously mastered but forgotten. This journey of recovery could also involve them exploring parts of Hogwarts that are little - known, and in the process, they form an unlikely friendship.
One possible plotline could be that Harry discovers he is in this unexpected mpreg situation and is initially terrified and confused. Snape, despite their past differences, steps in to help because he realizes Harry has no one else to turn to. Snape could use his knowledge of potions to ease Harry's physical discomfort during the pregnancy.
It could be that the goblins are facing a threat from dark wizards, and Harry steps in to help. He might teach them some defensive magic techniques that humans use, and together they form a plan to fight off the dark wizards. Harry's fame and experience could give the goblins the confidence they need to face their enemies.
One possible reason could be Snape's sense of duty to protect Hogwarts students in general. Even though he dislikes Harry, he might put aside personal feelings to ensure the safety of a student in a dangerous tournament like the Triwizard Tournament. Another reason could be Dumbledore's influence. Dumbledore trusts Snape and may have asked him to keep an eye on Harry during this event.
Well, one of the best aspects is seeing the development of their relationship. In the original books, it was mostly tense. But in fanfiction, we can see Snape truly helping Harry, like teaching him advanced magic or giving him insights about his parents. It gives a new perspective on both characters.
One possible plot could be that Superman is somehow transported to the wizarding world. He's lost his powers there, and Harry Potter has to help him get back to his own world while also protecting him from the various magical threats in the wizarding world. Along the way, Harry could teach Superman some basic magic to help him defend himself, and Superman could use his strength and heroism in a different way within the magical setting.
One possible plot could be that Aunt Marge discovers Harry's difficult situation at the Dursleys and decides to secretly help him with his magic studies. Maybe she has a change of heart after seeing how much he's struggling.