Well, one way could be through a magical accident. Maybe a powerful spell gone wrong transports Harry Potter to France and, due to some strange magic laws there, he ends up being proclaimed king. For example, if the spell disrupted the line of succession and the magic of the land recognized his powerful magic from Hogwarts as a sign of leadership.
In fanfiction, it might start with Harry being on a quest that leads him to France. There, he could use his skills and knowledge from the wizarding world to solve some great problems that the French wizarding community is facing. His heroics could earn him the respect and ultimately the title of king. He might introduce some Hogwarts - style teaching methods in the French wizarding schools, which would be really cool.
He could have adventures in dealing with the dark wizards of France. Just like he fought Voldemort in England, he might face a powerful dark wizard in France who is threatening the peace of the wizarding community. Harry would use his Patronus and other spells to protect his new kingdom.
It could be imagined as a wild crossover. Maybe someone thought about how cool it would be if the magic of Harry Potter and the power of Thor combined. For example, Harry using his magic wand and Thor swinging his hammer together in some strange alternate universe story.
He could meet French pure - blood families who have their own long - standing traditions. For instance, there might be a family that has a special connection to a particular magical forest in France. Harry might also run into French wizards who are experts in potion - making, as France is known for its fine potions in the wizarding world.
Well, he might visit Beauxbatons Academy. Maybe he would meet some new friends there, like some interesting French wizards or witches. He could also explore the French wizarding culture, which is likely different from what he's used to in England.
In this fanfiction, Harry might discover new magical creatures unique to France. For example, there could be some French - inspired magical beasts in the forests or mountains. He may also encounter a different style of magic education. The French wizarding schools might have their own set of spells and magical techniques that Harry has to learn. Maybe he'll make new friends among the French wizards and witches who have different cultural backgrounds and magical heritages.
Well, one possibility could be that Harry goes to France to study at Beauxbatons. He might make new friends there, like a French wizard who introduces him to the unique magical traditions of France. He could also get involved in some mystery related to an ancient French magical artifact.
Well, if Harry Potter goes to France in fanfiction, perhaps he would visit the Beauxbatons Academy. He could learn about their different styles of magic education. There, he might make new friends and enemies. Maybe he'd get involved in some sort of international magical competition that involves both Hogwarts and Beauxbatons. And who knows, he could even discover some long - lost French magic spells that could help him in his future battles against the Dark Arts.
Harry could be re - imagined as Sauron by having his personality shift. His usually kind - hearted nature could be warped by a powerful external force, like a dark spell or an encounter with a malevolent artifact. His magic could then be used for evil purposes instead of good, and he could start to see himself as a supreme being, much like Sauron does.
Maybe he wants to escape the constant danger in the UK wizarding world. Voldemort's followers might still be a threat even after his defeat, and France could seem like a safe haven.
One possibility is that Sirius would teach Harry all about his family's history in a more private and laid - back setting in France. He might introduce Harry to different magical cultures unique to France, like the Beauxbatons Academy. Harry could grow up with a more carefree attitude, away from the prying eyes of the British wizarding world.