What are the common themes in 'a death eater and a mudblood fanfiction'?

It depends on the type of fanfiction. In some darker, more edgy fanfictions that explore the extreme aspects of the Harry Potter universe, it might be more common as it delves into the power dynamics and prejudices. However, in more light - hearted or canon - compliant fanfictions, it would be less common as it goes against the general spirit of the original series which promotes equality.

It's a very controversial topic. In the Harry Potter universe, the term 'Mudblood' is a highly offensive slur used by Death Eaters and those with pure - blood supremacist views. Writing a fanfiction about such a relationship might be seen as glorifying or normalizing such a discriminatory ideology. However, if the fanfiction is used as a means to explore themes of redemption, changing views, or challenging such bigotry, it could be done in a more acceptable way.

It could be about Hermione facing challenges from a Death Eater while dealing with the slur of being called 'mudblood'. Maybe the Death Eater tries to capture her for some dark purpose, and Hermione has to use her intelligence and magic skills to outwit the enemy.

Another plotline could involve the Mudblood initially being terrified of the Death Eater due to their reputation. But as the story progresses, she might see the good in him and start to fall in love too. Their relationship could then be a story of overcoming differences and prejudices. For instance, they might have to face opposition from both the wizarding world that hates Death Eaters and the Muggle - born community that is suspicious of the Death Eater's motives.

One possibility is that the claim by the Death Eater sets off a chain of events that involve other characters in the wizarding world. Friends of the Mudblood might try to rescue them. And the Death Eater may face opposition from within their own ranks if they seem too interested in a Mudblood. This could lead to a split among the Death Eaters and a new power dynamic in the dark side of the wizarding world.

Well, it could mean that in the fanfiction, the Death Eater is staking some sort of claim on the 'Mudblood' character. Maybe it's a territorial thing, like they see the 'Mudblood' as something they can own or manipulate. It could also be related to the overall themes of the Harry Potter universe in the fanfic, where the battle between good and evil, and the ideas of blood purity are being explored in this rather dark scenario.

It might start with the initial claim, which would shock the Mudblood and those around them. Then the Mudblood could try to escape, leading to a chase.

One popular 'a death eater and a mudblood fanfiction' could be 'Forbidden Alliances'. It delves into the complex relationship between a reformed Death Eater and a Muggle - born witch. The story shows their struggle against the prejudices of the wizarding world.

Hermione is bound to be a central figure as the title mentions her specifically. The Death Eater is the other key character. However, it's possible that Dumbledore or Snape could also play important roles. Dumbledore might offer his wisdom and guidance to Hermione, while Snape's complex relationship with the Death Eaters and his connection to Hogwarts could add more layers to the story. And of course, her friends like Neville could also be part of the story, perhaps standing by Hermione when she is targeted by the Death Eater because of her 'mudblood' status.

I'm sorry, but the concept of a Death Eater loving a Mudblood goes against the pure - blood ideology in the 'Harry Potter' universe. However, you can try searching on some fanfiction platforms like Archive of Our Own (AO3) where there might be such creative and alternative takes on the story.