In some fanfictions, the Lestrange brothers might be under a spell or a curse that only Hermione can break. As she tries to break it, they develop a bond. It could also be that they are on a mission for the Dark Lord that involves Hermione, but during the course of the mission, they start to question their loyalty and instead form an alliance with Hermione against the Dark forces. There are many creative ways that fanfiction authors can explore the relationship between these characters.
Perhaps Hermione gets captured by the Lestrange brothers, but instead of harming her, they are intrigued by her intelligence and magical abilities. This could lead to a complex relationship where they try to understand her and she tries to either escape or convert them to the good side. Another plotline could be that in an alternate universe, the Lestrange brothers are not part of the Death Eaters and they meet Hermione in a more normal, school - like setting and form an unlikely friendship or more.
One possible plotline could be that the Lestrange brothers, who are initially on the side of the Dark Lord, have a change of heart due to their interactions with Hermione. Maybe they start to see the error of their ways and end up helping her in some way.
One possible plotline could be that the Lestrange brothers use their dark magic and charm to gradually draw Hermione into their world. Maybe they start by showing her some dark secrets that she becomes intrigued by against her better judgment.
One possible plot could be that the Lestrange brothers initially see Hermione as a powerful witch they can use for their dark purposes. However, as the story unfolds, they might start to have complex feelings for her. Maybe they realize her value as a person beyond her magic and struggle with their own dark natures.
Well, it could involve the Lestrange brothers having some dark motives for kidnapping Hermione. Maybe they want to use her knowledge of magic for their own evil plans, like getting access to powerful spells she knows.
Perhaps the plot is centered around Hermione trying to reform the Lestrange brothers. She might see some good in them that others don't, and attempts to bring them over to the side of good. This could lead to all kinds of situations, like her having to protect them from the wrath of other wizards who don't trust them.
Hermione is known for her strong sense of justice and intelligence. The Lestrange brothers, coming from a dark pure - blood family, might have a more cavalier attitude towards the law and a different view on power. Hermione would clash with them when it comes to ethical use of magic. For example, she would never condone their use of dark spells for personal gain. Her studious nature would also contrast with their more impulsive and power - hungry ways.
It's also possible that Hermione tries to reason with the Lestrange brothers. She could appeal to their better nature, if they have any left. Maybe she could remind them of the consequences of their actions, or try to make them see the error of their ways in following Voldemort. This could lead to an internal struggle within the brothers about whether to continue holding her or let her go.
A possible plotline could be that Vega Lestrange discovers a long - forgotten magic that has the potential to either save or destroy the wizarding world. As they explore this new magic, they attract the attention of both the good and the bad sides. Another plot could be that Vega is an outcast within their own family due to their different beliefs. They then set out on a journey to find their place in the wizarding world, meeting new characters along the way and getting involved in various adventures that are both related and unrelated to the main events in the 'Harry Potter' series.
In a fanfiction, Rabastan could be in a situation where he's being hunted by a vengeful wizarding family. Hermione accidentally gets involved when she's exploring an old wizarding stronghold. She uses her quick thinking and magic skills, like her time - turning spell in a creative way, to outwit the hunters and save Rabastan. Another idea is that Rabastan is trapped in a magically sealed chamber. Hermione, through her ability to solve complex magical puzzles, finds a way to break the seal and rescue him. It could also be that Rabastan has a change of heart and is trying to redeem himself, but some of his former dark associates don't want that to happen and try to kill him. Hermione steps in to protect him.
One common theme might be power dynamics. Since Hermione is in a'slave' role, it would likely explore how the Lestrange brothers, who are associated with the Dark Arts, exert their power over her. Another theme could be Hermione's struggle for freedom and how she might resist or adapt to her situation.
There are likely some out there. However, this kind of fanfiction often takes a rather dark and morally complex turn as the Lestrange brothers are Death Eaters in the original 'Harry Potter' lore. It might be hard to find ones that are well - written and don't cross into inappropriate territory.