A third theme could be longing. Maybe in the fanfiction, Harry is away for some reason, and Ginny's songs are her way of expressing how much she misses him. It could show her pining for his presence, and the lyrics could be full of memories of their time together and hopes for their future.
Another theme might be hero - worship. Ginny has always looked up to Harry as a hero. Her songs could be about how she sees him as this great, brave figure, and how that admiration has transformed into something more personal and romantic over time. In fanfiction, this can be a really interesting aspect to explore as it shows the development of her feelings. For example, she might sing about the first time she saw Harry on the Hogwarts Express and how that moment of seeing the 'Boy Who Lived' has led to her current feelings.
I'm not sure specifically as there could be many different takes in fanfiction. It might be about Harry and Ginny expressing some strong emotions or having a special moment while singing 'Hallelujah'. Maybe it's set in a post - war Hogwarts scenario where they are celebrating or finding peace through this song.
The obvious target audience would be Harry Potter fans, especially those who are interested in the relationship between Ginny and Harry. They would enjoy reading about Ginny expressing her feelings for Harry in the form of singing, as it adds a creative and unique aspect to their relationship.
Well, themes could include friendship evolving into something more. Their existing friendship in the original series could be a starting point, and the fanfiction could show how that deep bond could turn into a romantic connection. Also, themes related to acceptance within the wizarding society might be explored. How would their friends, like Harry and Ron, react? And how would the wizarding world in general view such a relationship between two powerful witches? This could be a major theme in such fanfiction.
One possible theme could be the deepening of their emotional bond. It could show how this physical step is a result of their growing love and trust for each other. For example, it might explore how they have overcome various obstacles in their relationship and this moment is a celebration of their connection.
There could be themes of trauma and recovery. If Harry is tortured in front of Ginny, both of them would likely experience significant trauma. The fanfiction could explore how they deal with that, both individually and as a couple. Also, themes of loyalty and friendship might be present as their friends try to rescue Harry.
One possible theme could be sacrifice. Their joint death could be portrayed as a sacrifice for the greater good, perhaps to save the wizarding world one last time. Another theme might be undying love. Even in death, their love endures and is shown as something so strong that they are together till the end.
A plot could be that the 'force' is a mysterious energy that Ginny unknowingly absorbed. Now that she's pregnant, it's affecting her and the baby in strange ways. Harry has to research ancient texts and consult with wise wizards to find a way to control this force. Ginny, on the other hand, is dealing with the physical and emotional changes of pregnancy while also being a vessel for this unknown force. It could be a story full of mystery, adventure and family bonds.
Possible themes could revolve around self - discovery. Ginny might be on a journey of self - discovery and realizes that she has different feelings for Neville than she thought she had for Harry. It could also be about the impact of secrets. If Ginny is cheating on Harry with Neville, there would be a lot of secrets involved, and the story could show how these secrets can affect the characters and their relationships. Additionally, a theme of forgiveness might come into play, either Harry forgiving Ginny or Neville dealing with the situation in a forgiving way.
One possible reason could be miscommunication. Maybe Ginny feels neglected by Harry because he's so caught up in his own heroic deeds and doesn't pay enough attention to her. So she might seek comfort or excitement elsewhere.
One possible plotline could be that they disappear to escape a new dark threat that has emerged in the wizarding world. They might be seeking a powerful magical artifact to defeat this threat and have to go into hiding to find it.