It could enhance their relationship if the fanfiction gives Harry new topics to talk about. For example, if the fanfiction is about a magical adventure similar to their own experiences, they can bond over it.
If the fanfiction has certain ideas or values that Harry starts to adopt while reading it on his way to Sirius, it might change how he interacts with Sirius. For instance, if the fanfiction promotes loyalty in a unique way, Harry may show his loyalty to Sirius in a different manner. However, if the fanfiction contains some inaccurate or negative portrayals of relationships, it could potentially create some misunderstandings between them. But overall, it really depends on the content of the fanfiction and how Harry interprets it in the context of his relationship with Sirius.
It could potentially strain the relationship. If Sirius misinterprets the situation, it might create some tension. Harry and Hermione would feel like they need to explain themselves, and Sirius might be a bit standoffish until he gets the real story. For instance, if he thought they were hiding something from him, it could make things a bit rocky between them for a while.
It can strain their relationship. If the argument is really intense, they might not trust each other as much immediately afterwards. For example, Harry might start to question Sirius' motives and Sirius could feel that Harry doesn't respect his experience.
The 'Harry Potter' books are set in a magical world full of its own stories, prophecies, and secrets. Sirius is a complex character with a lot on his plate. He has to deal with his family history, his time in Azkaban, and his loyalty to his friends. Fanfiction is a form of creative writing by fans outside the original story. Sirius doesn't have the time or the inclination within the context of the story to be reading fanfiction. His life is too filled with real magical drama and danger.
It's possible that in the cave, they start to see each other as equals rather than just a mentor - student relationship. They might argue about the best way to deal with the cave's mysteries at first, but through that process, they learn to value each other's perspectives. Also, if one of them gets injured in the cave, the care and concern shown by the other would enhance their relationship.
If Sirius hits Harry, it can initially strain their relationship. Harry may feel hurt and confused, especially if he trusts Sirius. It could lead to a period of estrangement.
His friends might not understand at first. They could be confused as to why Harry is being grounded and might try to convince him to break the rules. This could create some friction between Harry and his friends if he refuses, as they think he's being overly cautious.
Their talk could also enhance Harry's magical knowledge. Sirius could teach him spells or magical techniques that he hadn't learned at Hogwarts yet. This new knowledge would be very useful for Harry in his fight against the Dark Arts. Moreover, learning from Sirius would make Harry more independent in his magical growth as he gets advice from someone outside of the school environment.
Well, at first, Sirius would be in a state of shock and panic. But then he'd have to step up. Their relationship would shift from one of equals (in a sense, as Harry was growing up) to a caretaker - cared - for dynamic. Sirius would have to learn about Harry's likes and dislikes as a baby. He'd sing lullabies to him, comfort him when he cries. This new experience would make their bond stronger in a very different way. Harry might not remember all of it when he's turned back, but there would be a subconscious change in how he feels towards Sirius, a deeper sense of security and love that stems from those baby - days when Sirius was his whole world.
It may explore the emotional bond between them. Sirius could be like a father figure to Harry. He gives Harry advice and guidance, which is different from what Harry gets from others. This special connection makes Harry trust Sirius more than anyone else.
The relationship could become strained. Sirius might start to view Harry differently, with a bit of wariness. He might not trust Harry as much as before in terms of making good decisions. But it could also lead to a more open relationship where they talk about things they previously avoided, like relationships and feelings.