One plotline might be that Hermione's relation to the Blacks is a key factor in a prophecy. She has to figure out what it means and how her connection to the Blacks plays into the greater scheme of things in the wizarding world. It could involve her having to team up with some of the more controversial Black family members to fulfill the prophecy. There could also be a plotline where Hermione's Black family connection makes her a target. Voldemort or his followers might want to use her to get to the Black family secrets or to manipulate her into joining their side because of her new - found family ties. This would put her in a very difficult position, having to fight against the forces of evil while also dealing with the implications of her new family connection.
Well, in this type of fanfiction, perhaps Hermione uses her new status as the heiress of the Blacks to reform the family's reputation. She could start by making amends for the wrongdoings of the past members of the family. Or she might find herself in a situation where she has to fight off those who want to take advantage of her newfound wealth and power. And she could also explore the connection between the Blacks and other pure - blood families, which would open up new story arcs.
Often, in fanfiction, Hermione is related to the Blacks through a long-forgotten family tree branch or a magical ancestry twist. It could be that she discovers an ancestral link that changes her status within the magical world.
Often, in these fanfictions, Hermione is used as a tool to understand Voldemort better. There might be a plot where she is forced to enter his mind, like in a Legilimency - related situation. This could create a connection between them that the fanfiction then explores. Another common plot is that Hermione's magic has some sort of resonance with Voldemort's, which draws them together in a relationship that is both dangerous and full of potential for new storylines.
In some fanfictions, Hermione might be related to the Blacks through a complex family tree. It could be that a Black family member had a relationship with a Muggleborn long ago, and Hermione is a descendant of that union. This would create an interesting dynamic as she tries to reconcile her Gryffindor values with the often - dark reputation of the Black family.
One common plotline is them working together on a project. For instance, they might be part of a team to reform the Ministry's education policies. Percy brings his administrative knowledge and Hermione her experience as a student and her innovative ideas.
One common plotline is Hermione's academic achievements post - Hogwarts. She could be researching new spells or making contributions to the wizarding academic world. Another is her relationship with her friends. Maybe she's planning a big reunion or helping a friend through a difficult time. Also, her love life can be explored in a positive way, like a romantic getaway with her partner or a sweet courtship story.
A frequent plotline involves their family drama. With Hermione being a Muggle - born and Draco and Blaise from pure - blood families, there would be a lot of family issues to deal with. For example, how would the Malfoy family react to having a Muggle - born as part of their family? Also, they might be forced to work together to protect their family from threats. Maybe an old enemy of the Malfoy family targets them because of their new family situation. There could also be a plotline where they explore their magical abilities together and discover new and unique forms of magic due to their special connection as triplets.
One common plotline is the redemption arc. Draco realizes the error of his ways and tries to make amends. Hermione, being the kind - hearted person she is, helps him. During this process, they fall in love and have a baby. Another is the arranged marriage plot. For some magical reason, they are forced to marry, and as they live together, they discover they have more in common than they thought and start a family. A third plotline could be a time - travel scenario where they meet in a different time or dimension, free from the constraints of their original relationship in the story and decide to have a child together.
One common plotline could be Hermione trying to secretly undermine Voldemort's power while being his wife. Another might be that she is forced into the marriage due to some dark magic or a deal gone wrong. And sometimes, there could be a plot where she believes she can change Voldemort's evil ways through their relationship.
A popular plotline is the 'adjustment' plot. Hermione, being used to her own circle of friends and activities, has to adjust to Bill's world which might be more focused on curse - breaking and international wizarding affairs. Meanwhile, Bill has to adapt to Hermione's studious and sometimes over - eager nature. Their journey of getting to know each other's worlds better and finding common ground is a common plotline. Another one could be that they are brought together by a prophecy that only they can fulfill together, which forces them to become mates and work towards a greater good.