The themes of hope and despair are quite common. Some fanfics show Mulder and Scully holding onto hope in the face of the unknown, while others explore their moments of despair. Also, the theme of the search for truth is prevalent. Since 'The X - Files' is all about seeking the truth, fanfics continue that pursuit. They might explore different ways the truth could be uncovered or hidden.
One great 'X Files Requiem' fanfic is 'The Aftermath of Requiem'. It delves deeper into Mulder and Scully's relationship after the events of 'Requiem'. It shows how they deal with the uncertainty and the new challenges that come their way. Another one could be 'Requiem's Echoes' which focuses on the mystery left unsolved in the episode and how it might be explored further from a different perspective.
One common theme could be the struggle between good and evil. In the Dresden Files universe, this is a central concept, and when combined with a character like Capone, it might show how even a figure from the past with a dark reputation can be involved in the battle. Another theme might be the use of magic and the supernatural, which are integral to the Dresden Files. Fanfics might explore how Capone - like characters interact with these magical elements in the role - playing game setting.
The theme of legacy is quite common. Naruto has a huge legacy in the ninja world, and in fanfics, Himawari is sometimes seen as the one to carry on that legacy. Also, the theme of protection. Naruto wants to protect his family, especially Himawari, and fanfics might show how he goes to great lengths to keep her safe while also teaching her to be self - sufficient. There can also be a theme of adventure, where they go on quests together and discover new things.
Love and relationships are also common themes. There can be romantic relationships between vampires and humans or among vampires themselves. These relationships are often complicated by the vampire's immortality and their different nature from humans. In many Vampire Requiem novels, love is a driving force that can either redeem or destroy a character.
One possible theme could be guilt. Given Germany's complex history, especially during the World War II era, the novel might explore the collective or individual guilt of Germans. Another theme could be redemption. Characters might be seeking to atone for past wrongs or find a way to move forward in a morally complex world.
One of the main themes is the destructive power of addiction. The characters in the novel are consumed by their addictions, whether it's drugs or the pursuit of a false dream. Another theme is the loss of self. As they sink deeper into their addictions, they lose their sense of identity and their ability to make rational choices. Also, the theme of desperation is prominent. They keep chasing after something that is ultimately unobtainable, leading to a downward spiral of despair.
There are quite a few. You can start by checking fanfic websites like Archive of Our Own. Some might focus on exploring the relationship between the main characters in a new way, or creating new cases for them to solve.
In MLP Nightmare Moon fanfics, the theme of forgiveness can be quite prominent. The other ponies in Equestria may have to decide whether to forgive Nightmare Moon for her past actions. And there's also the theme of self - discovery, as she discovers new aspects of herself during the course of the story.
One common theme is redemption. Draco, who was once a bit of a bully, is often shown finding redemption through his relationship with Hermione. When he holds her, it can symbolize his newfound care and change of heart.
The theme of hope is quite prominent. The sakura leaves, which are associated with new life and beauty in the Naruto universe, can represent the hope that Sakura has for a future with Sasuke. Also, the theme of sacrifice is there. Sometimes Sasuke's actions for the greater good might seem like a sacrifice of his relationship with Sakura, and the sakura leaves can be a melancholic reminder of what could have been.