One common theme is the forbidden nature of the love. Since demons are often seen as dark and dangerous in most mythologies, a relationship with them is considered taboo, adding a sense of excitement and danger to the story.
Another theme is redemption. The demon character might be on a path of self - discovery and trying to become a better being because of the love they feel for the human or other character. It gives a sense of hope and transformation in the story.
Forbidden love is a very common theme. Since angels and demons are supposed to be on opposite sides, their love goes against the natural order. Another theme is redemption. The demon may be redeemed through the love of the angel. Also, self - discovery. Both the angel and the demon learn more about themselves as they fall in love with someone so different from their own kind.
One common theme is the struggle between two different worlds. For example, in 'Inuyasha', Kagome comes from the modern world while Inuyasha is from the feudal demon - infested world. They have to bridge this gap. Another theme is acceptance. In 'Blue Exorcist', Shiemi has to accept Rin's demon side for their love to grow.
One common theme is forbidden love. Since demons and humans are from different worlds or existences, their love is often not allowed by society or the natural order. Another theme is redemption. The demon may be redeemed through the love of a human, changing from an evil - being to a more benevolent one.
The idea of transformation is a common theme. The human may be transformed by the experience of loving a demon, either in a literal sense like gaining some powers or in a more emotional and psychological way. And of course, the theme of eternal love. Demons are often associated with immortality, so the concept of an eternal love with a mortal human or an equally long - lasting love between two demons is explored. There's also the theme of discovery, as the human discovers the true nature of the demon and vice versa, which adds depth to their relationship.
One common theme is the struggle against society. In most demon - human love stories, both the human and demon worlds oppose their relationship. For example, in the story of Lily and Zorath, the people in Lily's village were afraid of Zorath and wanted to drive him away. Another theme is self - discovery. The demon often discovers a new side of itself through the love of a human, and the human may also learn about their own courage and acceptance. Also, sacrifice is a theme. The couple may have to sacrifice their normal lives or their relationships with their own kind to be together.
One common theme is the forbidden love aspect. Since demons are often seen as dark and dangerous in most fictional universes, falling in love with one goes against the norms. Another theme is redemption. Sometimes the demon is redeemed through the love of the human character.
One common theme is forbidden love. Since angels are often seen as good and demons as bad, their relationship goes against the natural order, making it forbidden. Another theme is redemption. Sometimes the demon is redeemed through the love of the angel.
Another theme is redemption. The demon characters may be seen as having a dark side initially, but through the power of love in the story, they might seek redemption. Like in some stories where a demon falls in love with a human and tries to change for the better to be worthy of that love.
One common theme is the power imbalance. The demon tyrant usually has great power while the other character (often a human or a weaker being) is at a disadvantage in terms of power. For example, in many novels, the demon tyrant can use his power to protect or sometimes control the object of his love.
One common theme is forbidden love. Since angels and demons are often seen as polar opposites in most mythologies, their love goes against the natural order. Another theme is redemption. Sometimes the demon is redeemed through the love of the angel. Or the angel may 'fall' in a sense because of the relationship with the demon.