Well, one interesting plot could be how they handle the magical upbringing of their babies. For example, teaching them basic spells at a very young age in a safe and fun way.
In many fanfictions, their relationship is filled with small, sweet moments. For example, they might have a morning routine where Harry makes Ginny her favorite cup of tea and they sit together and talk about their plans for the day. Their love is also shown through how they communicate, always being honest and open with each other.
One possible plot could be that in the afterlife, Harry and Ginny are reunited with all their loved ones who passed away. They might relive some of their most cherished memories together, like their first kiss at Hogwarts. And they could also be involved in some sort of afterlife adventure, perhaps helping lost souls find their way.
Well, of course Harry and Ginny themselves are often very well - written. Writers can really dig deep into their relationship, showing how they've grown from friends to lovers. Their personalities are expanded upon, like Ginny's fierce loyalty and Harry's sense of justice.
One interesting plotline could be their post - war life. How they deal with the trauma of the war and build a normal life together. For example, they might struggle with nightmares but find comfort in each other.
In many fanfictions, their relationship is one of mutual growth. Harry, who has always been a bit reserved, learns to be more open and share his feelings with Ginny. And Ginny, who was always strong - willed, learns to be more patient and understanding. They both evolve as individuals while also strengthening their bond as a couple.
Well, in many fanfictions, Harry and Ginny's married life is filled with adventures too. They might go on secret missions for the Order of the Phoenix when needed. At home, they would support each other's careers. Harry would be proud of Ginny's success in the Quidditch world, and Ginny would be there for Harry when he has to deal with the memories of his past battles. Their evenings could be spent reading to their children by the fireplace, creating a warm and loving family environment.
The main characters are Harry and Ginny for sure. But it's also possible that some of the villains they faced in life, in a reformed state, could be part of the story. For example, Draco Malfoy could be there, having had a change of heart in the afterlife. This would add an interesting dynamic to the story as they all interact in this new realm.
Well, obviously Harry and Ginny are the main characters. But often, other characters from the original Harry Potter series also play important roles. For example, Ron and Hermione might still be their close friends. Neville could also be involved as he was an important part of Harry's life in the original story. Luna Lovegood might show up as Ginny's friend or confidante.