The main difference is the addition of the demigod element. In the original Harry Potter series, the magic system is based on spells, potions, and wizarding heritage. In this fanfic, Hadrian Potter being a demigod would likely introduce a different type of magic related to his demigod status, such as powers inherited from gods or abilities related to specific mythologies.
Another difference is the world - building. The original Harry Potter series is set mainly in the wizarding world of Hogwarts and the surrounding magical Britain. However, in 'hadrian potter is a demigod fanfic', the story might expand to include realms and locations from the demigod mythology, like Mount Olympus or other mythical places. This would change the scope and feel of the story quite a bit.
Well, in the original Harry Potter series, Harry is an only child. But in 'Hadrian Potter Twin Fanfic', the presence of a twin completely changes the dynamics. There are new relationships to explore, like the bond between the twins which can be a source of strength or conflict.
The 'harry potter is royalty fanfic' will probably have a different social structure. The original series had a clear structure based on blood status in the wizarding world (pure - blood, half - blood, muggle - born). In the fanfic, there will be an added layer of royalty. This means that there could be new forms of discrimination or privilege based on royal blood as well as magic blood. There could also be new types of magic associated with royalty, like magic that is only accessible to those of royal bloodline, which is a significant departure from the original series.
Well, it has the arcana elements which the original series doesn't. This makes for a different kind of magic and a different set of rules.
The main difference is the concept of oath - breaking. In the original series, loyalty and oaths are important but not explored in this 'oathbreaker' way. In the fanfic, characters might take actions that go against their previous commitments, which is a big deviation.
It differs in many ways. In the original series, the story follows a set path, but in 'defiance harry potter fanfic', the author can take more liberties. For example, the fanfic might change the alliances or the motives of the characters. Maybe some characters who were enemies in the original become friends in the fanfic.
The most obvious difference is Harry's identity. In the original, he is a Potter, which shapes his story in many ways. In this fanfiction, not being a Potter means different relationships and a different standing in the wizarding world.
The fanfic may have a different plot focus. While the original series focuses on Harry's fight against Voldemort, the fanfic could center on Harry's personal growth in other areas, like his academic achievements or his relationships with less - known characters. Also, the fanfic author might introduce new characters that don't exist in the original. These new characters can bring fresh perspectives and storylines to the wizarding world.
The original series has a certain level of realism within the magical world. But in 'eventual godlike harry potter fanfic', all bets are off. Harry's transformation into a god - like entity means that the story can take on a more fantastical and out - there direction. The fanfic could explore ideas that J.K. Rowling never touched upon, like Harry's influence on other magical worlds or his ability to rewrite the laws of magic. It's a departure from the more grounded nature of the original books and allows for a lot more creative freedom in terms of plot and character development.
The cultural influence is a big difference. In the original, it's mainly Western culture, but in the Chinese fanfic, there'll be Chinese cultural touches. For example, the way holidays are celebrated or the types of food in the story.
It differs in the way characters approach problems. In the original, it's more about instinct and magic knowledge. Here, it's rational thinking.