Perhaps a story where Rose and Hugo get into a bit of trouble at school, and Ron and Hermione have to deal with it in their own unique parenting ways. This could explore the different personalities of Ron and Hermione as parents and how they influence their children.
A good plot could be that Rose discovers she has a unique magical ability that no one in the family has had before. Ron and Hermione are worried but also excited, and Hugo is a bit jealous at first. As they explore this new ability, they face some challenges from other wizarding families who are envious or scared of it.
Family heritage is also quite popular. Since Ron and Hermione have such a big part in the wizarding world's history, their kids might be dealing with the expectations that come with that. For example, Rose could be under pressure to be as smart as Hermione. And there are also stories that focus on the sibling relationship between Rose and Hugo. They could be having adventures together, or having the typical sibling squabbles. In some fanfictions, the authors might also explore how the new generation copes with the threats that still lurk in the wizarding world, even after Voldemort's defeat.
One great fanfic is 'The Unlikely Bond'. It beautifully explores the relationship between Ron and Hermione in a post - Hogwarts setting. It shows how they deal with the challenges of adult life while still maintaining their magical world charm.
Perhaps in the fanfiction, Ron's jealousy gets the better of him. He might be jealous of Hermione's success or her friendships with other characters like Harry or some of her academic peers. His jealousy could manifest in ways that make Hermione feel suffocated or unappreciated, causing her to end the relationship. Also, Ron may have some habits that Hermione can't tolerate anymore. For example, his slacking off on certain responsibilities or not taking things as seriously as she does.
You can try fanfiction websites like FanFiction.net or Archive of Our Own. Just search for 'Ron and Hermione, Rose and Hugo' in their search bars, and you'll likely find a variety of stories. Some might focus on their family life, while others could explore different adventures.
One plot idea could be that Hugo has a unique connection to time - turners. Since Hermione was so involved with time - turners in the past, Hugo might inherit some strange ability related to them. Maybe he accidentally sends himself back in time and Ron and Hermione have to figure out how to get him back.
A good Ron and Hermione fanfic should have well - developed characters. Since we already know them from the books, the fanfic should add new layers to their personalities. For example, it could show a side of Ron that's more confident in his own abilities outside of Harry's shadow, and Hermione being more open about her emotions.
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 possible fanfiction could be where Ron and Hermione discover their soul bond during a dangerous adventure. They start having shared dreams that give them clues about a hidden magic. This leads them to work even closer together, strengthening their bond as they face challenges side by side.
One idea could be exploring how they handle their kids' magical education. Maybe one of their children has a special ability that requires unique teaching methods. Another could be a story about a family vacation where they visit a new and mysterious magical place and encounter various adventures. Or perhaps a plot where they have to deal with an old enemy from their Hogwarts days who resurfaces and targets their family.