The theme of family also crops up a lot. Given the complex family dynamics in 'Once Upon a Time', fanfictions explore how Rumbelle's relationship affects and is affected by their family members. It could be about them raising their son together or dealing with the interference of other family members like Rumpelstiltskin's father or Belle's father.
One popular theme is redemption. Belle often plays a role in redeeming Rumpelstiltskin. For example, in many fanfictions, her love and belief in his better self help him overcome his dark side.
Another theme is adventure. Writers often send the couple on various adventures in different magical realms. They might be on a quest to find a powerful magical artifact or to save a kingdom, all while strengthening their relationship.
Family relationships are a big theme. Some fanfics focus on the family dynamics between characters like the Charmings and their descendants. There are also fanfictions that revolve around the theme of identity. Characters in 'Once upon a time' often have complex identities, and fan writers like to dig deeper into how these identities are formed and how they can change over time.
One popular theme is alternate universes. For example, what if Emma Swan had grown up in the Enchanted Forest instead of our world. Another theme is exploring different relationships between characters. Some fanfictions focus on a deeper friendship between Regina and Snow White that might have developed under different circumstances. And then there are those that delve into the backstories of minor characters, like how the Blue Fairy came to be.
Redemption arcs are also quite popular. Given that many of the characters in 'Once upon a time' have complex backstories and have done bad things in the past, fans often write about their journey towards redemption. Family relationships are a big theme too. There are stories exploring the bonds between parents and children, siblings, etc., like the relationship between Snow White and her daughter.
A 'found family' trope is quite common. Characters who were alone or estranged in the show form a close - knit family in fanfiction. For instance, Henry might bring together different characters who then become his new family. Also, the 'hurt/comfort' trope, where a character is hurt (physically or emotionally) and another character comforts them, is frequently used in Once upon a Time fanfics.
Archive of Our Own (AO3) is also a great place. It allows for more detailed tagging, so you can easily filter Rumbelle fanfictions by your preferences like specific plot elements, ratings, and word counts. Many talented writers post their works there.
One popular theme is Ruby's relationships. For example, her friendship with Snow White or her romantic relationships within the story's universe. Writers often explore how these relationships develop and change over time.
One popular theme is the exploration of Merlin's magic in different storylines. Another is his relationships, like his friendship with Arthur. Also, the struggle between good and evil is often a central theme.
Love stories are also common. Writers often pair him with other characters, like a romantic relationship with a certain princess. These stories can range from sweet and fluffy to more angsty and complex, depending on the writer's style.
One popular theme is Emma's journey of self - discovery. In many fanfictions, she embarks on a path to understand her true self, her powers, and her place in the story's world. Another theme is her relationships, like her romantic relationships which are often explored in great detail. There can also be themes related to family, as she discovers more about her family ties and how they shape her.
One popular theme is alternate universes. Writers often create scenarios where Naruto and his friends are in different settings, like a modern-day world or a fantasy realm other than the Hidden Villages. Another theme is relationships. This could be exploring different romantic pairings that might not be as prominent in the original series, such as Naruto with a minor character. Family also plays a big part. For example, delving deeper into Naruto's family heritage in ways the original didn't fully explore, like what if his parents had different fates or more relatives were still alive.