Maybe Harry meets a group of magical creatures' protectors in Japan. They are dedicated to protecting the unique magical creatures in Japan, and Harry joins them in their adventures, learning a great deal about Japanese magical fauna along the way.
Well, it could be about Harry going to Japan for a magical exchange program. Maybe he meets new wizards there, discovers unique Japanese magical creatures, and learns different types of magic that are specific to Japan.
One possible plot could be that Harry discovers a hidden magical school in Japan. He has to adapt to the new culture and magic system there. Maybe he meets new friends who teach him about Japanese magical traditions and spells.
A new character could be an old and wise sensei - like wizard, Master Takeshi. He teaches Harry about the ancient Japanese magic arts. And there might be a group of mischievous students, like Hiro, Yuki, and Ryu, who at first give Harry a hard time but later become his friends.
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.
Yes, there are quite a few. You can start by looking on popular fanfiction websites like Fanfiction.net or Archive of Our Own. Some stories might explore how Harry's experience at Durmstrang would be different from Hogwarts, like different classes and a more strict regime.
He could meet a Japanese witch or wizard who becomes his best friend. This person could teach him all about Japanese magical traditions and how to navigate the Japanese wizarding world. For example, they might show him how to use a Japanese - style magic wand.
In fanfiction, if Harry attends Beauxbatons, he might experience a very different magical education. The curriculum at Beauxbatons could be more focused on certain aspects like etiquette and different forms of magic compared to Hogwarts. He could make new friends from different backgrounds and learn different magical traditions. Maybe he'd have to adapt to the more refined and formal environment of Beauxbatons.
One common theme is the culture shock. Harry coming from Hogwarts to Durmstrang would experience a very different magical education system. Another theme could be the relationships he forms with new classmates. They might be more competitive or have different loyalties.
The story changes in many ways. Firstly, the setting is different. Beauxbatons has a more European charm compared to Hogwarts. Harry would be exposed to different kinds of magic and spells. His relationships with other students would be different too. He might not have the same rivalries as he had at Hogwarts. Instead, he could form new alliances based on the different values at Beauxbatons.
In this fanfiction, Harry could meet a French witch who is an expert in potion - making. She could teach Harry some new and unique potion recipes that are exclusive to the French wizarding world. He might also run into a group of French wizarding students who are a bit skeptical of this English wizard at first but then become his friends after getting to know him better.