Perhaps there could be a time - travel plot where Hermione and Percy are sent back in time together. They have to rely on each other to get back to their own time. During this adventure, they see different sides of each other. Percy sees Hermione's quick thinking in a completely different context, and Hermione sees Percy's loyalty to his family and friends in a new light, which could lead to a romantic relationship.
One plot idea could be that Rose discovers an old spellbook that Hermione once used and tries to follow in her footsteps. This leads to her getting into some tricky situations where Hermione has to step in and guide her, like when Rose accidentally summons a mischievous magical creature. Another could be a time - travel plot where Rose and Hermione go back in time to witness a significant event in wizarding history together and have to make sure they don't disrupt the timeline too much. A third idea is that they team up to solve a mystery in Hogwarts that involves a new, unknown type of magic that is causing strange things to happen around the school.
One idea could be a story where Bill and Hermione team up on a dangerous mission to rescue a group of magical creatures being held captive by dark wizards. Bill's experience with handling dangerous situations and Hermione's vast knowledge of magic would make them a great duo.
Another plot could involve Percy being assigned to work with Hermione on a top - secret project at Hogwarts. Maybe it has something to do with protecting ancient magic texts. Along the way, they learn to respect each other's different approaches and form an unlikely friendship.
Their different personalities. Percy is all about order and following the rules, while Hermione is also rule - abiding but in a more independent - minded way. In fanfiction, this contrast can lead to some great character development and interesting interactions as they learn from each other.
A plot could involve Fred being affected by a spell that makes him slowly lose his memories. Hermione notices the signs early on and starts researching in the restricted section of the library. She finds a rare counter - spell that requires a great deal of magical power and precision. With the help of her friends, she manages to gather the necessary ingredients and perform the spell to save Fred's memories. Another idea is that Fred is in a situation where he's being influenced by a malevolent magical entity. Hermione detects it and uses her logical thinking and knowledge of magical defenses to exorcise the entity and save Fred.
One interesting plot idea could be the initial shock and resistance from both Hermione and Percy. Hermione, being a strong - willed and independent witch, might fight against the marriage law at first. Percy, on the other hand, is very rule - abiding, so he might initially try to force the marriage to work just because it's the law. They could start off clashing over their different views on the situation. For example, Hermione might be more focused on finding a way to repeal the law while Percy is more concerned with following the regulations. As they spend more time together, they could gradually discover each other's hidden depths and start to develop real feelings for one another. Maybe Hermione realizes that Percy has a more creative side beneath his uptight exterior, and Percy discovers Hermione's vulnerability.
One common theme is redemption. Percy has made some mistakes in the series, and in fanfiction, Hermione can often be the one to help him find his way back, which is a form of redemption. Another theme is the clash of different personalities. Percy is more formal and structured, while Hermione is highly intelligent but also more emotional at times. Their interactions based on these differences can create interesting stories.
A plot could involve FemHarry having a special connection to an ancient magical artifact that Hermione helps her research. As they dig deeper, they find out it has the power to change the wizarding world. They then have to protect it from dark wizards who want to use it for evil. This would lead to a lot of action and suspense.
Well, a plot might be that Hermione is deaged due to a magical accident in the library. As a deaged Hermione, she has a different view on things. She might start to question the rules of Hogwarts more, as she doesn't have the same level of respect for them as her older self. Her friends, Harry and Ron, would have to deal with this new, more rebellious Hermione while also trying to figure out how to reverse the deaging spell. This could cause a lot of chaos in Hogwarts.
One plot idea could be Hermione helping Hagrid with a new magical creature he discovers. Maybe it's a creature that has unique abilities and Hermione uses her extensive knowledge from books to figure out how to take care of it.