The plot could involve Rosalie sensing that Harry has a special power that is not just related to his wizardry. She decides to adopt him to keep him safe from the dark forces in both the wizarding world and the vampire world. Rosalie would have to deal with the magical aspects of Harry's life that she doesn't fully understand at first. But with time, she helps him hone his skills. Harry, in turn, might introduce Rosalie to the concept of love and friendship in a way that vampires don't usually experience. This could lead to a change in Rosalie's view of the world and her place in it.
Rosalie's vampire nature would mean she has a strong sense of protectiveness towards Harry. She might be overly cautious about his safety, sometimes to the point where Harry feels a bit smothered. For example, she might not let him go out alone at night in case he encounters dark creatures. However, her super - strength and speed could also be used to protect him from any immediate threats, like if Death Eaters were to attack.
One plot idea could be that Rosalie somehow ends up in the Harry Potter universe. She might initially be a bit of an outcast due to her vampiric nature but Harry is intrigued by her. They gradually form a bond as they face some common enemies.
One common theme is the clash of different worlds. Since Rosalie Hale is from the 'Twilight' universe and Harry Potter is from his own wizarding world, fanfictions often explore how these two very different worlds collide and interact. For example, in many stories, Rosalie has to adapt to the magic and culture of Hogwarts which is very different from her vampire world.
One interesting fanfiction could be where Rosalie Hale somehow gets transported into the Harry Potter world. Maybe she uses her vampire abilities to help Harry in a battle. For example, her super strength and speed could give them an edge against the Death Eaters.
Perhaps in the fanfic, Narcissa adopts Harry because she has a change of heart after seeing the destruction Voldemort causes. She wants to protect Harry as a way to atone for her family's association with the Dark Lord. Harry would then grow up in a Slytherin - influenced environment but still hold onto his Gryffindor values. This would lead to interesting interactions with other Slytherins and a different dynamic within Hogwarts.
Well, perhaps the plot could involve Rias Gremory taking Harry Potter under her wing in a world where the two fictional universes collide. She might use her devil powers to protect Harry from the threats in the wizarding world that Dumbledore couldn't handle. Harry could also learn some new skills from the devilish side of things, like enhanced combat abilities.
Well, perhaps it could start with Bella Swan finding little Harry Potter in a strange situation, like he's been magically transported to her world. She decides to take him in out of kindness. Then, she might have to deal with the magical aspects of Harry's world that she doesn't understand at first. Maybe she tries to protect Harry from the threats in his own world using her own unique skills.
Well, perhaps Harry would grow up with a different kind of magic. Rosalie, if we're thinking of a vampire Rosalie from Twilight in this crossover, might teach Harry some skills related to self - defense in a very physical way. He could be more in touch with his instincts and have a different view on magic compared to how he was raised in the original Potter story.
Yes, there are some. You can start by looking on popular fanfiction websites like Fanfiction.net or Archive of Our Own. Just search for the specific pairing in their search bars.
They could interact through a magical accident. For instance, a spell gone wrong could open a portal that brings Rosalie into Harry's world. Then they'd have to figure out how to get her back while also dealing with the threats in the wizarding world like Voldemort.