The plot might be about their discovery of a long - lost dark magic artifact. Harry and Daphne hear rumors about it and set out on a quest. Along the way, they face many challenges, like other dark wizards who also want the artifact and the Ministry of Magic's attempts to stop them. As they search, their relationship deepens. Once they find the artifact, they use it to gain more power, but also realize it has a dark side that could destroy them if they're not careful.
Well, Harry as the Dark Lord would likely have a more twisted use of his existing powers. His Patronus, for example, could be turned into a dark form, maybe a dementor - like entity that he uses to instill fear. Daphne, as the Dark Lady, might have powers that are more related to dark illusions, creating false images to deceive her enemies. Her family's pure - blood magic could be corrupted to create a new kind of dark charm that she uses to control others.
The Dark Lady could be an ancient witch who was once a powerful figure but was banished for her dark practices. Maybe she was a rival of one of the great wizards in the past and now she's back to seek revenge.
It could be an original character created by the fanfiction writer. A witch who has been in the shadows for a long time, biding her time to rise to power.
Another plot could involve them facing opposition from the traditional good side, like Dumbledore's Army remnants. They have to use their newfound dark powers and cunning to outwit their opponents. Maybe they start to realize that the line between good and evil isn't as clear as they once thought. As they fight, they also discover secrets about the wizarding world's past that make them question everything they knew.
One great 'Dark Harry and Daphne Fanfiction' is 'The Darkened Path'. It shows a really interesting take on Harry's character being darker and his relationship with Daphne. The story has a lot of plot twists and the character development is well - done.
The Dark Lady in Harry Potter fanfiction could be a variety of things. It could be a long - lost relative of a major character who has turned to the dark side. For example, she could be a distant cousin of the Malfoys who has her own agenda in the wizarding world that involves dark magic. She might also be an entirely new creation who fills a role that wasn't explored much in the original series, such as a female dark wizard who challenges Harry and his friends in ways different from Voldemort.
The Dark Lady could be Bellatrix Lestrange. She is a powerful and fanatically loyal Death Eater. If Harry Potter were to become a fan of her in a fanfic, it might be because he is somehow tricked into seeing her as a symbol of power and freedom from the traditional wizarding rules.
Well, first, Harry would need to study the ways of the Sith. He has to understand his enemy. Then, he could combine his wizarding skills with some new knowledge. For example, he might learn how to use his magic to counter the Sith's mind - control abilities. He could also use his Patronus, which represents hope and light, to drive away the darkness of the Sith. And of course, he'd need to find the Sith's weakness, like in the way he found Voldemort's Horcruxes.
In the original series, Harry and Hermione are friends. But as the Dark Lord and Dark Lady, their relationship would be much more complex. They might have a more equal partnership in terms of power. Instead of Harry being the main hero and Hermione as his sidekick, they would both be leaders. Their relationship could be based on mutual ambition and a shared vision for a new wizarding world.