There might be American witches and wizards who are experts in different fields of magic. For example, someone who is really good at potion - making but with a very American - style approach, different from what Harry and Daphne are used to in Hogwarts. And also, they could meet American students who are curious about their British counterparts.
Another possibility is that they meet some native American wizards or witches who still hold on to the old traditions that are deeply rooted in the land. These characters could introduce Harry and Daphne to ancient magic that has been long forgotten in the UK. They might also encounter some American - born dark wizards or witches that they have to deal with, which would add a lot of drama to the story.
They could meet MACUSA officials. These are the magical authorities in America and would likely play a role in any story set there.
They might encounter new magical creatures unique to America, like the Thunderbird. Harry could use his fame to make connections with American wizards, while Daphne might be fascinated by the different magical culture there.
The main characters are Harry and Daphne, of course. Harry is the well - known wizard from the Gryffindor house at Hogwarts. Daphne is from Slytherin. They are brought together in this fanfiction through their shared activity of swimming.
A magical creature could also be an important character. Imagine a friendly house - elf that they meet. The house - elf could be in some sort of trouble, and Harry and Daphne decide to help it. This adventure with the house - elf could shape their relationship and also introduce them to different aspects of the magical world.
He could meet American witches and wizards. Maybe a friendly wizard who shows him around the American wizarding areas.
They could meet new magical students at Ilvermorny. For example, a young and talented witch or wizard who is curious about their experiences at Hogwarts.
They are likely to meet their future selves. This could be a very strange and enlightening encounter for both of them. They might also meet their descendants, like their children and grandchildren, which would be a heartwarming experience.
He could meet American wizards and witches. Maybe there's a young and enthusiastic wizard who becomes his guide in America, showing him around the American magical communities.
They would surely meet Harry Potter. Harry could be curious about their different magical abilities and background. Hermione would also be there, probably peppering them with questions about their own world's magic. Ron might be a bit skeptical at first but warm up to them eventually.
Harry might meet some American wizarding families that have long - standing traditions different from the pure - blood families in the UK. These families could introduce Harry to new forms of magic and social norms within the American wizarding community. He could also meet American Muggle - born wizards who have their own unique stories of discovering magic in a different cultural context compared to what he's used to.
He could meet American witches and wizards. Maybe a young and adventurous American wizard who shows him around the American magical world.