His magical education could be more group - oriented. Japanese culture values group harmony, so there might be more group projects and collaborative learning in magic classes compared to Hogwarts. For example, when learning complex spells, students might work in teams to master them.
His magical education would likely be more hands - on. Dresden is often in the thick of things in his world, so Harry Potter would probably get real - world experience much earlier. Instead of just learning from textbooks in a classroom, he'd be out there facing actual magical threats and learning on the job.
Harry might have a stronger sense of self - worth. In the original story, he grew up with the Dursleys who made him feel unwanted. But if raised by a phoenix, he would be surrounded by unconditional love and protection. This could make him more confident and self - assured, not easily swayed by the opinions of others and more determined to follow his own path in the fight against evil.
Well, his story would be extremely different. For one, he'd be trained in stealth and combat skills from a young age instead of learning magic at Hogwarts in the traditional way. He might not have the same group of friends as in the original story. Instead of having Ron and Hermione as his closest allies, he could be more solitary or have assassin - type comrades. His view of good and evil would also be more blurred as an assassin, perhaps seeing the world in terms of targets and those who hire him rather than the clear - cut good vs. evil of the wizarding world. And his relationship with Voldemort would be more of a hit - or - miss rather than the epic battle of good against evil.
The magic would be different in that it would have a more ancient and primal feel. Since Alduin is an ancient and powerful entity, Harry's magic would be influenced by that. It wouldn't be limited to the rules and regulations of the wizarding world. He could potentially have the ability to transform into something more dragon - like, or at least gain some of the physical attributes of a dragon. His magic would be a blend of his own wizarding heritage and Alduin's otherworldly power, creating a completely new and unique form of magic that is both terrifying and awe - inspiring.
His magic would likely be more water - based. He might be able to conjure water - made weapons or shields more easily. For example, he could create a spear made of enchanted water that can pierce through dark magic defenses.
His abilities in alchemy would be far more advanced. He'd likely be able to create potions and elixirs with ease, having learned from Flamel. Also, his understanding of magical objects, especially those related to the Philosopher's Stone, would be greater.
His personality would be shaped by the strict religious environment. He'd likely be more respectful of authority figures, having been raised by nuns. In the wizarding world, this could mean he has a different relationship with teachers like Snape. He might also be more empathetic towards those who are ostracized, like the house - elves, because of the values instilled by the nuns about caring for the less fortunate. Moreover, he would be more accustomed to a simple life, so the grandeur of the wizarding world might both amaze and overwhelm him at the same time.
Harry would probably be more traditional in his views. His grandmother, being from an older generation, would pass on her values. He might be less accepting of some of the more modern or radical ideas at Hogwarts. For example, he could be more hesitant about the idea of house - elf liberation as he's been raised with more traditional wizard - house - elf relationships.
His Hogwarts experience would be very different. For one, he would have a closer relationship with the hospital wing. He might not get into as many dangerous scrapes as in the original story because he would be more aware of the consequences due to Pomfrey's influence. Also, his reputation could be that of a healer - in - training rather than the 'Boy Who Lived'. His classes might be more centered around potions and herbology as he would have a natural inclination towards those subjects.
In such a fanfiction, Harry would grow up in a completely different cultural setting. He might have different friends, perhaps those from traditional Japanese wizarding families. His upbringing could be influenced by Japanese values like respect for elders and harmony with nature. His clothing style might also be a blend of the wizarding robes and traditional Japanese garments. He could also face unique challenges like dealing with Japanese magical creatures that are different from those in the UK.