The crossover could be conceptualized by having the female Harry Potter character be a key figure in a prophecy in the Final Fantasy world. Just like in the Potterverse, she might be the 'chosen one' to defeat a great evil. Her unique skills from the Harry Potter world, such as her ability to fly on a broomstick, could be translated into something extraordinary in Final Fantasy. She could use her broomstick to quickly traverse the vast landscapes of the Final Fantasy world, much like a Chocobo but with a magical, Potter - like twist.
The crossover is conceptualized by taking the core elements of both universes. Harry Potter's immortality could be a result of some dark magic he dabbled in, like the Horcruxes but with a different twist. In the Twilight world, the vampires are immortal in their own way. So, the fanfiction might explore how Harry's immortality, which is magical in nature, compares to that of the vampires. It could also look at how he might adapt to the new social structures in the Twilight world, like the vampire covens and the werewolf packs.
In some fanfictions, Severus Snape being Harry Potter's father is a radical but interesting concept. It often involves re - imagining the relationship between Lily and Snape. Maybe there was a hidden, deeper connection between them that led to Harry's birth. This changes the whole dynamic of the story as Snape would then have a more personal stake in Harry's life from the start.
If Harry Potter and Final Fantasy 12 characters were in a crossover, the relationships could be quite complex. For instance, Harry's friendship with Ron and Hermione is based on loyalty and shared experiences at Hogwarts. In contrast, the relationships in Final Fantasy 12, like Vaan and Penelo's friendship which is also based on growing up together in Rabanastre. When these two groups meet, they might initially be wary of each other, but gradually find common ground.
In 'Harry Potter Final Fantasy 7 Crossover Fanfiction', there are many potential concepts. One is the idea of the different races in Final Fantasy 7, like the Cetra, interacting with the magical creatures in Harry Potter. How would a Cetra view a Hippogriff? And what if the Death Eaters were after the power of the Jenova Cells? It would create a whole new dynamic of power struggles and alliances between the two universes.
One idea could be to have Harry Potter characters enter the world of Final Fantasy VII. For example, Harry could end up in Midgar and meet Cloud. They could team up to fight against the dark forces in both their worlds, like Voldemort's minions and Sephiroth. The magic from the Harry Potter universe could interact in interesting ways with the materia and summons of Final Fantasy VII.
Maybe the Philosopher's Stone in Harry Potter has some connection to a powerful crystal in Final Fantasy. Voldemort wants to use it to gain ultimate power, and the heroes from both universes have to come together to protect it. For example, Cloud Strife could join forces with Harry and his friends. The Hogwarts houses could be compared to the different classes in Final Fantasy, like Gryffindor being similar to the Warriors in Final Fantasy.
I think Harry Potter and Cloud Strife would be an interesting pairing. Harry is a young wizard with a strong sense of justice, and Cloud is a brooding and powerful warrior. They could learn from each other's strengths. Harry could show Cloud the power of magic, and Cloud could teach Harry about combat skills and determination.
I think Aerith and Hermione would be a really interesting combination. Aerith has her connection to the planet and her gentle nature, while Hermione is highly intelligent and resourceful. They could combine their knowledge, with Aerith teaching Hermione about the life force of the planet and Hermione sharing her vast magical knowledge. It would be a great exchange of ideas and skills.
The worlds can be blended through character crossovers. For example, Vaan from Final Fantasy XIII could visit Hogwarts and be amazed by the magic there. He could try to learn magic spells, while also teaching the wizards about his world's combat skills.
Well, in Final Fantasy 8, magic can be drawn from enemies and junctioned to stats. In a Harry Potter - Final Fantasy 8 fanfiction, this could mean that wizards start to learn how to draw magic from magical creatures in the Forbidden Forest in a similar way. They could then use this 'drawn' magic to enhance their own abilities, like Hermione using the magic she draws from a hippogriff to become faster at casting spells.