One possible plot could be that Harry and Fleur run away to escape the chaos of the wizarding world. Maybe they go to a far - off land where they can live in peace and explore magic on their own terms. They might discover new spells and magical creatures together.
Well, in this fanfiction, they could run away because they feel misunderstood. Harry is tired of all the expectations on him, and Fleur is perhaps not fully accepted in the wizarding community. So they run away to build a new life. They could end up in a hidden magical village, where they start to teach the local wizards and witches new ways of magic that they learned from Hogwarts and Beauxbatons respectively.
Well, one possibility is that Harry gets tired of all the danger and attention in the UK wizarding world. He might stow away on a ship or use magic to transport himself to America. Once there, he could discover new magical creatures and spells unique to America. Maybe he'd meet some American wizards who have a different approach to magic compared to the British.
Well, perhaps they run away because of a misunderstanding within the wizarding community. Harry and Fleur might have been wrongly accused of something, like stealing a powerful magical artifact. So they decide to flee and clear their names on their own terms. They journey through different magical lands, encountering various magical creatures along the way that either help or hinder them.
In this fanfiction, Harry could discover a whole new magical world in Japan. He might encounter Japanese magical creatures like the tanuki which has magical abilities in Japanese folklore. He could also study different forms of magic that are unique to Japan, such as some types of onmyodo magic. And perhaps he'd make new friends among Japanese wizards and witches who have a different culture and approach to magic compared to those in the UK.
In this fanfiction, perhaps Harry Potter would find the small town of Forks very different from the wizarding world. He might be intrigued by the normal, yet somehow mysterious human life there. He could make new friends who have no idea about magic and have to keep his own identity a secret to avoid chaos.
Perhaps she would form her own group of allies. These could be other outcasts from the wizarding world. They would work together to fight against the dark forces that she was running from in the first place. It could lead to some epic battles and a lot of character growth.
Perhaps he'll meet a mysterious old wizard who lives in a secluded temple in the mountains. This wizard could be a master of ancient Japanese magic and could teach Harry about the spiritual side of magic that is deeply ingrained in Japanese culture. Harry might also meet a group of young Japanese witches who are training to become magical healers. They could share their knowledge of Japanese magical plants and how to use them for healing, which would be very different from the healing methods Harry learned at Hogwarts.
He could meet American witches and wizards. Maybe a young and adventurous American wizard who shows him around the American magical world.
Well, perhaps Fleur rejects Harry for some reason. Maybe she's still in love with Bill and tells Harry she can't be with him. This would leave Harry heartbroken as he might have developed deep feelings for her.
One possible plot could be that Harry, having known the hardships of being an orphan himself, decides to open an orphanage at Hogwarts. He uses magic to create a warm and safe environment for the orphans. He teaches them magic, not just spells but also the values of friendship and courage, much like Dumbledore did for him.
Maybe Harry runs away to America to escape the dangerous wizarding world in the UK. He could start a new life in America, perhaps meet new friends who are different from those in Hogwarts, and learn about American magic. He might also be hiding from some dark force that was after him in the UK.