One common theme could be the exploration of their different cultures. Thor is from Asgard and Jane is from Earth. Fanfictions might focus on how they bridge this cultural gap in their relationship. For instance, they could introduce each other to their respective traditions, like Thor showing Jane the grandeur of Asgardian feasts and Jane introducing Thor to Earth's holidays.
The theme of the Gothic elements in Jane Eyre can also be explored in fanfiction. Writers might play with the dark and mysterious aspects of Thornfield Hall, like the secrets in the attic, but in a way that is more about the atmosphere and mystery rather than anything inappropriate. For example, they could create new mysteries related to the history of the hall or the people who lived there before.
One common theme could be self - discovery. In femharry stories, Harry (as a female) might go through a journey of understanding her new identity in the magical world. Another theme could be friendship, exploring how she forms and maintains relationships with other characters like Hermione and Ron.
Love is a very common theme. Their relationship, whether it's the budding of their love or the challenges they face as a couple. Another theme is adventure, as they often go on quests together. And power, like how Thor's godly powers interact with Jane's scientific knowledge.
Love is a very common theme. Since their relationship is central in the movies, fanfictions often expand on their love story, exploring how it deepens and overcomes obstacles.
One common theme is the loyalty of dogs. Many dog fanfictions focus on how a dog is unwaveringly loyal to its owner, through thick and thin. For instance, in some stories, the dog will protect the owner from danger even at the cost of its own life. Another theme is the friendship between dogs and other animals or humans. They might show how a dog befriends a lonely child or forms an unlikely bond with a cat.
One common theme is self - discovery. When an OC is reborn, they often have to figure out who they are in this new life. Another theme could be redemption. Maybe in their previous life, they made mistakes, and now they get a chance to make things right. For example, if they were a bully before, they could become a protector in their new life.
One common theme is the complex relationship between Buffy and Angel. It could be about their unfulfilled love, the challenges they face in being together because of their different natures (Buffy as the slayer and Angel as a vampire with a soul).
One more theme is the exploration of the Soul Society. There are many aspects of the Soul Society that the original series didn't fully cover. Fanfiction writers often take it upon themselves to expand on the lore, the different squads, and the politics within the Soul Society. This can lead to really interesting and unique stories that are not related to adult content.
If we exclude the adult - related themes that 'lemon' might imply, common themes in mermaid fanfiction could be the mermaid's longing for the human world. Mermaids might be curious about human culture, technology, or relationships. Another theme could be the mermaid's struggle to fit in, either in the human world or in their own mermaid society if they have some unique trait or ability that sets them apart.
A major theme is the missed opportunities in their relationship. Fanfictions may create alternate universes where Snape and Lily could have ended up together. This explores the 'what if' scenarios. Another theme is the impact of social class and prejudice. In the wizarding world, Snape's Slytherin identity and Lily's Gryffindor identity, along with her Muggle - born status, created a complex social dynamic. Fanfictions can delve deeper into how these factors affected their relationship. Also, the theme of forgiveness can be part of the story. How Snape might have hoped for Lily's forgiveness for some of his actions, or how Lily might have forgiven him in different circumstances.