One common theme is the struggle against prejudice. Since Hermione is a Gryffindor in the original series, in these fanfictions as a Slytherin, she has to face the existing biases towards Slytherin house. And with her necromancy abilities, there's often the theme of the ethical use of such dark magic.
A lot of these fanfictions deal with Hermione's new identity. She has to redefine herself as a Slytherin and a necromancer. This includes themes like self - discovery, learning to control her new powers, and finding her place within the Slytherin community. Another theme could be her relationships, both new ones with Slytherin students and how her old friendships might change.
One common theme is identity. Hermione has to grapple with this new identity as the heir of Slytherin, which is very different from her Gryffindor self. Another theme could be acceptance, both from herself and from others around her.
Friendship is also a big theme. Hermione has to navigate her relationships with her old Gryffindor friends and her new Slytherin acquaintances. Sometimes there are conflicts, like when her friends don't understand her new ways. But other times, they learn to accept and even admire the new Hermione.
One common theme is redemption. Often the older Slytherin character has some sort of a dark past or a negative reputation, and through their relationship with Hermione, they start to change for the better.
One popular 'Hermione is a Necromancer Slytherin' fanfiction might be 'The Slytherin Hermione' series. It delves deep into Hermione's journey as a Slytherin with necromancy abilities, exploring how she challenges the traditional Hogwarts house stereotypes and uses her newfound skills in unique ways.
Often, there's a theme of redemption as well. The Slytherin character may have had a less - than - perfect past or be associated with some not - so - nice Slytherin traits. But by protecting Hermione, they are on a path of redemption, proving that they can be more than what others expect of them. For example, they might be trying to make up for past wrongs done by their house mates or their own previous actions.
One common theme is the struggle for acceptance. Since necromancy is often seen as a dark art in the Harry Potter world, Harry usually has to face a lot of opposition from the wizarding community. Another theme is the exploration of power. Harry has to learn to control his new necromantic powers and not let them consume him.
Another theme is loyalty. He has to decide who he is loyal to - his house, his friends, or his own beliefs. In some fanfictions, he might face a dilemma where his loyalty to Slytherin clashes with his friendship with students from other houses. This creates a lot of interesting plot twists.
One common theme is the struggle for acceptance. Since Slytherin is often seen as the more 'ambitious' and sometimes 'dark - leaning' house in the Harry Potter universe, a pregnant Slytherin might face more judgment. So, the character often has to fight for acceptance from her peers and family.
Another theme is friendship. Harry forms new friendships in Slytherin that he might not have had in Gryffindor. These friendships often cross the traditional house boundaries and are quite interesting to read about. For example, he might become friends with some of the more complex Slytherin characters who have their own motives and backstories. Also, the theme of self - discovery is prominent. Harry discovers new aspects of his magic and personality as he is in a different house environment.
Draco Malfoy is often a common character. He has a big role as he is one of the prominent Slytherins. Their interactions can range from hostile to friendly depending on the story. For instance, he might initially be against Hermione being in Slytherin but later come to respect her.