Ron would be over the moon for Harry. He'd probably joke around and say something like 'I knew you had it in you, mate!' and then they'd celebrate together with some butterbeer or something from the Hogwarts kitchens.
In the fanfic, it's possible that Harry's experiences throughout his adventures at Hogwarts contributed to his success in Divination. All the strange and mysterious things he had encountered before might have given him an edge. He could have used his knowledge of magic in general and applied it to the divination exam in a unique way.
There could be. The Harry Potter fandom is so large and diverse that it's very likely that someone has written a fanfic with this premise. However, it might not be easy to find. You could also check some Harry Potter - specific fanfic communities on social media platforms. People there might be able to point you in the right direction if they know of any such fanfics.
The plot could be that Harry starts to have extremely vivid and accurate prophetic dreams, much more so than what he had in the original series. He uses these dreams to foresee danger not only for himself but for the whole wizarding world. For example, he might predict an upcoming dark wizard attack on Hogwarts much earlier and be able to prepare defenses. His newfound divination skills make him a key figure in the fight against dark forces.
Yes, he does. In many fanfics, Harry might take divination seriously as it could offer him new insights or ways to deal with the challenges he faces. It could also be a way for him to explore a different aspect of magic that he didn't fully appreciate in the original story.
One popular fanfic idea could be exploring the backstory of the Divination teacher. Maybe she had a hidden past as a powerful seer in a different wizarding community before coming to Hogwarts. This could add depth to her character.
There are quite a few fanfics where this happens. One popular one is 'The Mystic Visions of Harry' where his divination experiences lead to unexpected adventures.
Maybe Hagrid could help too. He has a special connection with magical creatures, and since Harry is in the form of an owl, Hagrid might be able to understand him better than others. He could provide a safe place for Harry to stay while they figure out how to turn him back, and he might know some old - fashioned remedies or magic that could be useful in this situation.
Hermione would most likely be very touched. Harry is her good friend, and this gift shows that he really understands her. Owls are not only practical but also a symbol of the wizarding world. She would immediately start to name it and make a cozy place for it in the Gryffindor common room. She might also show it off to Ron, with a big smile on her face.
Maybe Harry uses some new study methods or has some magical encounters that boost his knowledge and thus gets top owl results. For example, he might discover a hidden spell that helps him remember everything he reads.