Another possibility is that Kara and Hermione become friends. Kara could introduce Hermione to some advanced technology from her world, while Hermione could teach Kara about the complex magic in the wizarding world. They could work together on some sort of project that combines science and magic, like creating a device that can detect dark magic using a combination of muggle technology and spells.
Maybe there's a spell in the Harry Potter universe that somehow calls Kara Danvers to Hogwarts. She then has to adjust to the magical rules while also teaching the wizards and witches about her own kind of powers. For example, she could show them how to use super - strength in a non - magical way, like building things faster. And in return, they teach her some advanced magic spells.
Well, an interesting plot might be that Barry and Kara discover a connection between their powers at a deeper level. For example, their powers are linked to an ancient energy source. As they explore this, they grow closer. Or perhaps there's a plot where Kara is transported to Barry's universe and has to adapt to his world while they solve a mystery that threatens both their universes. There could also be a story where they are forced to hide their relationship from their respective superhero teams for some reason, adding a bit of drama to the mix.
One idea could be a story where Oliver Queen finds himself in Kara's universe by some sort of multiverse accident. He teams up with Kara to fight a common enemy that is causing chaos in both their worlds. Their different fighting styles, Oliver's more grounded archery and hand - to - hand combat and Kara's super - powered abilities, would make for an interesting dynamic in battles.
Kara Danvers could fit in as a sort of outsider - hero. She has powers that are different from magic, but she could learn to respect and work with magic. For instance, she might use her super - speed to quickly gather ingredients for potions or her heat vision to melt through locked doors in Hogwarts' secret passages.
One idea could be a crossover where Carol Danvers, with her superpowers, accidentally lands in the wizarding world of Harry Potter. She could be initially confused by the magic there, which is different from her own powers. Then, she might team up with Harry and his friends to fight a common enemy that threatens both the Muggle world she's from and the wizarding world.
Begin by creating a setting. Decide if the story will take place mainly in the wizarding world, in Kara's world, or in a new place that combines elements of both. Then, introduce your characters. Write about how Kara first encounters the wizarding world or how the wizards react to her presence. You can start with a scene that grabs the reader's attention, such as Kara crashing into Hogwarts during a Quidditch match.
One interesting plotline could be Oliver and Kara teaming up to fight a powerful, new villain that neither of their respective cities have faced before. They combine their unique powers and skills to take on this threat.
Perhaps Kara Lemon has a special magical ability that she discovers while at Hogwarts. She and Harry Potter team up to use this ability to fight against the dark forces that are starting to emerge again, like a new threat from the remnants of Voldemort's followers.
One common theme is their sisterly bond. Writers often explore how they support and protect each other. Another theme is their superhero identities and how they balance their personal and heroic lives. For example, how Kara's life as Supergirl affects her relationship with Alex.
One positive theme could be Kara's journey in mastering her powers. For example, she could face new challenges that test her limits, and through her determination and the help of her friends, she overcomes them. This shows her growth as a hero.