Maybe in this fanfiction, Snape decides to test Harry's knowledge of Potions in a very unorthodox way during detention. Instead of the usual punishments, he challenges Harry to create a complex potion without using a recipe. Harry has to rely on his instincts and the little knowledge he has gleaned from Snape's classes. This could either end in disaster or in Harry impressing Snape, leading to a change in their relationship.
In a Harry and Snape detention fanfiction, Harry might finally have a chance to understand Snape better. He could see that Snape's strictness is not just pure malice but perhaps a result of his complex past. Snape, on the other hand, could start to see Harry not just as James Potter's son, but as an individual with his own struggles. They might end up having a conversation about magic that neither expected, leading to a newfound respect for each other.
Well, Harry could be forced to clean the Potions classroom during detention. Snape might make him scrub every cauldron by hand while muttering about how clumsy Gryffindors are. Harry might accidentally spill a potion ingredient, which makes Snape even angrier and gives him more tasks to do, like sorting out all the potion ingredients in the store cupboard.
Well, in a detention with Snape in a Harry Potter fanfic, Harry might be forced to clean out the Potions storeroom. Snape could use this time to lecture Harry about his lack of respect for Potions as a subject. Maybe he would also drop some hints about Harry's father, James, which could be both infuriating and enlightening for Harry.
They could start off on bad terms, with Snape being his usual strict self and Hermione being defiant. But as the detention progresses, they might find common ground. For example, Snape could notice Hermione's talent for potions and start to give her some extra knowledge or tasks related to advanced potions. This could change their relationship from one of animosity to one of a grudging teacher - student respect.
Well, they might start by arguing at first in detention. Harry could be suspicious of Daphne, and Daphne might be a bit haughty towards Harry. But as time goes on, they could start to understand each other better. Maybe they discover they have some common interests like a love for a certain type of magic or a shared dislike for a particular teacher.
Well, perhaps Snape sets them to clean the potions classroom. Draco tries to boss Harry around at first, but Harry refuses to be pushed. As they clean, they accidentally knock over a vial that releases a magical mist. The mist makes them relive some of their worst memories involving each other. This forces them to understand each other's perspectives better and by the end of detention, there's a less hostile air between them.
They could start by Snape giving Hermione a long lecture about her behavior that led to the detention. Hermione, being Hermione, might try to argue her case, which could lead to a tense exchange. For example, if she was late to class because she was helping a first - year student, Snape might not initially believe her.
In the fanfiction, Snape might take Harry because he discovers a connection between Harry and an ancient magic that could be dangerous if misused. So, he takes Harry to a place where he can keep an eye on him and make sure the magic is not exploited by the wrong people.
One interesting scenario could be that during detention, Snape makes Harry clean all the potion bottles in the dungeon while lecturing him about the importance of precision in potions. Harry, in turn, discovers an old, forgotten potion recipe among the bottles and Snape is grudgingly impressed.
Well, in fanfiction, Harry's refusal of detention could be a major turning point. It might lead to him exploring other ways to solve the problems that led to the detention in the first place. Maybe he discovers a new magic or finds an ally who helps him deal with the underlying issues. But on the other hand, it could also put him at odds with Hogwarts' traditional ways. The teachers would be forced to re - evaluate their discipline methods, and Harry would have to deal with the fallout, which could include being ostracized by some or having to prove his point in a very difficult situation.
One possibility is that Harry's presence as a kitten would soften Snape's heart. Snape, who has always had a tough exterior, might find himself more vulnerable around this small and helpless creature. Harry, on the other hand, might be able to sense Snape's true nature better in this form and start to trust him more. This could create a bond that is different from their usual relationship in the original story.