Another possibility is at a Hogwarts event. Let's say it's a special ceremony. Harry accidentally bumps into Snape, and instead of the usual scolding, Snape gives him a rather cryptic piece of advice. This first interaction sets the stage for a series of events where they gradually learn more about each other's pasts and motives, leading to a more complex relationship.
In some fanfictions, their first kiss might happen after a Quidditch victory. Ginny, flushed with excitement from winning the game, and Harry, proud of her, get caught up in the moment. Their eyes meet, and without thinking, they share a quick, passionate kiss as the rest of the team cheers in the background.
One possible scenario could be that a group of Hogwarts students, while exploring a hidden cave near the Forbidden Forest, accidentally trigger a magical trap. Maybe they were searching for some rare magical ingredient for a potion. The trap could be a spell that causes the cave to start collapsing, like the rocks begin to fall and the entrance gets blocked. They then have to use their magic skills, like levitating the rocks or using the reducto spell to clear a path out.
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.
Perhaps it could happen during a time of danger at Hogwarts. There's some sort of threat, and James is protecting Lily. In that moment of intense emotion and relief when the danger has passed, they realize their deep feelings for each other. Lily looks into James's eyes, and without a word, they lean in and share their first kiss, with the adrenaline still coursing through them.
In this fanfiction, perhaps Dudley's envy of Harry's magical world finally boiled over into uncontrollable rage. He might have found a way to cross into the wizarding world without anyone knowing. And in a moment of extreme jealousy and anger, Dudley could have used some kind of weapon or spell (maybe through some dark magic loophole) against Harry, which unfortunately led to Harry's death. Fanfiction allows for these extreme and unexpected plot twists.
One possible reason could be that fanfiction often takes creative liberties that may distort the complex character of Snape that J.K. Rowling created. Snape has a very intricate backstory and personality in the original series, and fanfiction might simplify or misinterpret it.
Well, it could start with a dream or a prophecy. Harry has a strange dream about Snape that he can't shake off. He starts to observe Snape more closely in real life and realizes that there's more to him than he thought. Meanwhile, Snape notices Harry's change in behavior towards him. As they interact more, they find common ground in their love for magic and their shared experiences of loss. This mutual understanding could lead to a situation where Harry, driven by his new - found respect and affection, kisses Snape. It's a very different take on the relationship between the two characters compared to the original story.
One possible reason could be copyright infringement. If the fanfiction uses too much of the original 'Harry Potter' material without proper authorization, J.K. Rowling (or those in charge of the franchise) might take legal action. Another reason could be if the fanfiction misrepresents the characters in a way that goes against the intended spirit of the original work.
Maybe Harry goes back to the time when Snape was being bullied by James Potter and his friends. Harry, knowing the importance of Snape in the future, steps in to stop the bullying. This act of kindness from Harry could lead to Snape having a different view of the Gryffindors and also a different attitude towards Harry himself. It could also make Snape more confident and less resentful, which might in turn affect how he behaves during the wizarding war.
Well, there could be a plotline where Snape's father was an inventor in the wizarding world. He might have created some powerful magic items or spells that were lost or forgotten. Snape, in the fanfiction, could be on a quest to find and revive his father's work. Another idea is that Snape's father was a key figure in a war long before Voldemort's rise, and his actions had consequences that Snape has to deal with in the present day of the fanfiction. There could also be a plotline where Snape's father was a mentor to some other important character, and this connection has implications for Snape's life and the overall story.