Power and its implications are often explored. Since both characters have some form of power, how they use it in relation to each other and in their relationship is a theme. For example, Kurama's fox - demon powers and Kagome's demon - influenced abilities. Also, redemption can be a theme, especially if Kagome is seen as a demon who needs to find her place in the world.
Love is a very common theme. The idea of two different beings, like Demon Kagome and Kurama, falling in love despite their differences. Another theme is the struggle between good and evil, as Kagome is often depicted as having a demon side and Kurama has his own moral code.
Love and friendship are common themes. Since they are from different worlds in the original series, exploring how they form a bond, whether it's a romantic relationship or a deep friendship, is often seen.
One common theme is the exploration of their relationship. Since they are from different anime/manga universes, fanfics often deal with how they meet and interact in a crossover scenario.
In 'Kagome is a dragon demon' fanfiction, themes often revolve around the transformation's consequences. For instance, there could be a theme of isolation. People might be afraid of her new form and keep their distance, which makes Kagome feel alone. Another theme could be adaptation. She has to learn how to use her new dragon - demon abilities, like flying or breathing fire if that's part of the concept. And of course, there's the overarching theme of how this change affects the story's world. Does it tip the balance of power? Are there new enemies or allies because of her transformation?
One common theme could be the clash of different cultures. Kagome is from a Japanese - inspired world in Inuyasha, and Legolas is from Middle - earth. Their different backgrounds can lead to interesting interactions. Another theme might be power dynamics, as Kagome has her demon powers and Legolas his elven abilities.
Well, there's often the theme of adventure. Since Kagome is usually involved in some sort of fantastical world, going on adventures with the dragon demon is a common plot point. They might be on a quest to save a particular place or defeat an evil force. And, of course, the theme of loyalty and trust. Their relationship has to build on these elements as they face various challenges together in the fanfiction world.
One common theme is power dynamics. Since Kagome is a dragon demon, there's a shift in her relationship with Sesshomaru in terms of power. Another theme is transformation. Her change into a dragon demon often leads to self - discovery and new challenges.
One popular Demon Kagome x Kurama fanfiction is 'The Unlikely Bond'. It beautifully weaves their characters together in a world filled with magic and mystery. The author does a great job of showing how their different personalities complement each other.
The fanfiction may introduce new villains or threats that only their combined powers can defeat. This creates an interesting dynamic as they learn to work together. There could also be a lot of cultural exchange in the stories, as Kagome represents human values from her time period and Kurama has his own demon - based culture.
Well, a frequent theme is the battle between good and evil. The black dog demon may be initially seen as evil but as the story progresses, Kagome discovers its true nature which is good. Also, there's often a theme of discovery. Kagome discovers new powers or abilities through her association with the black dog demon. For example, she might gain the ability to see hidden spirits. It makes for an exciting story as she learns to control these new powers.
One common theme is identity. Kurama has to figure out how his demon self and his human self coexist. Another theme is friendship. Since he's in the human world, he forms relationships with humans which often play a big role in the stories.