Survival is a very common theme. The character who is eaten has to find a way to stay alive in the dragon's belly. Another theme could be redemption. Maybe the dragon is a bad creature, but through the experience of having a person inside, it changes for the better.
One more theme could be the exploration of the unknown. The inside of a dragon is a very strange and unknown place in these fanfictions. The character gets to explore this new and dangerous environment, facing all kinds of challenges like acidic stomach juices and strange organs that might have their own magical properties.
Power and transformation are also common. The character might gain some sort of power while inside the dragon, like being able to communicate with other magical creatures. This power then transforms their life and their role in the fictional world. For example, they could become a mediator between humans and dragons.
Survival is a very common theme. The characters who get eaten usually have to figure out a way to stay alive inside the dragon, whether it's by finding something to eat themselves or avoiding the dragon's internal defenses.
Fear is a big theme in these stories. The idea of a dragon eating a girl instills fear in the listeners or readers. It also has a theme of the unknown. Dragons are often mysterious creatures, and their actions, like eating a girl, are part of that mystery. And sometimes there is a theme of sacrifice, where the girl is sacrificed to the dragon for some reason, like to save the village.
Since 'woman eaten vore stories' are not in the realm of positive or acceptable literature, we can try to analyze what could be seen as related themes in a more general and appropriate way. One could be the theme of vulnerability. Just as in a vore - like situation a woman (or any character) is in a position of extreme vulnerability, in other stories, female characters may face situations where they are vulnerable to a powerful entity or force, such as in stories of female slaves in historical settings. Another theme could be the fight for survival, similar to how in a vore - related idea there is a sense of the need to escape a 'fatal' situation.
In some dragon fanfictions, a character might be eaten by a dragon as a sacrifice. However, the dragon's digestive system has some sort of magical property that gives the character new powers or abilities. This then leads to a journey of self - discovery as the character figures out how to use these new powers in the dragon - filled world.
One common theme is the idea of transformation. Loki often undergoes some sort of change in relation to the dragon, either in his powers or his perspective. For example, in some stories, the dragon's magic affects Loki in unexpected ways.
One common theme is friendship. Often, the bond between the characters and the dragon is a central part of the story, like in many tales where a human and a dragon become unlikely allies. Another theme is adventure. Dragons usually lead the characters to different and exciting places.
One common theme is friendship. Like in many stories, the dragon and the human start as strangers but gradually become friends and rely on each other. For example, in 'A Dragon's Friend', the human helps the dragon when it's trapped and in return the dragon protects the human from danger.
One common theme is self - discovery. The singing dragon often has to figure out the power and significance of its singing. For example, in many stories, the dragon realizes that its singing can heal or communicate across different species.
A common theme could be self - discovery. Since Emma is a dragon, she may have to figure out her new abilities and place in the world.
The theme of redemption can also be found in some 'dragon bilbo fanfiction'. Maybe the dragon has done bad things in the past and through its relationship with Bilbo, it tries to redeem itself. And of course, the theme of magic is prevalent. Dragons are magical creatures, and when combined with Bilbo's world, it creates a lot of magical elements in the stories.