The struggle between good and evil is often there. Incubus are often seen as creatures with a somewhat dark nature in the lore, and in fanfiction, there's the theme of whether they can overcome that for the sake of love or a relationship with a human. Also, the idea of acceptance, both the human accepting the incubus and the incubus accepting the human way of life and emotions is a common theme. For example, in many stories, the incubus has to learn about human emotions like loyalty and selflessness which are different from what they are used to in their own world.
In a particular Incubus x Human fanfiction, the incubus is on a mission to collect a certain amount of human energy but ends up getting attached to a human male. The human is a musician, and his music has a strange effect on the incubus. Their relationship develops as the incubus struggles between his duty and his new - found feelings for the human.
Often, there is the theme of self - discovery. The male human may discover new aspects of himself through his relationship with the incubus. For example, he might realize he has a stronger will than he thought when resisting the incubus's allure at times. Also, the theme of acceptance is prevalent. Both the incubus and the male human have to accept each other's differences, like the incubus's need for energy and the human's mortal nature.
One popular incubus and human fanfiction is 'The Incubus's Love'. It tells a story of an unexpected bond between an incubus and a human girl. The story is filled with elements of mystery and romance.
To write a good Incubus x Human fanfiction, start with a strong concept. Maybe the human has a special power that attracts the incubus in an unexpected way. Develop their relationship gradually. Show the conflict between the incubus's nature and his feelings for the human. Also, add details about the settings, like a spooky old mansion where they often meet. Use dialogue to show their different perspectives. For instance, the incubus might be cynical about humans at first, but the human's actions change his view. It's important to keep the story engaging and unpredictable.
There is a fanfiction titled 'Incubus and His Human Mate'. It delves into how the relationship between the incubus and the male human develops. It could start with the incubus being initially interested in the human's physical appearance but gradually falling for his personality. The story might also explore how the human copes with the knowledge of the incubus's true nature.
I don't think it's a popular concept. Naruto has a huge fan base, but most fans are more interested in traditional fanfiction themes like new adventures, relationships within the Naruto universe, or exploring different character developments. The idea of Naruto being an incubus is so far - fetched and not in line with the original essence of the Naruto series that it's likely not something that has gained much popularity.
It's highly improbable that 'naruto is an incubus fanfiction' is popular. Naruto has a huge and diverse fanbase, but they are mainly attracted to fanfictions that expand on the existing lore, character development, and relationships within the Naruto universe. The idea of Naruto being an incubus is not only an odd concept but also goes against the core essence of the character that fans have come to love. So, it's not a mainstream or popular type of fanfiction.
I'm not sure specifically if there is a well - known 'Incubus Heart' in Harry Potter fanfiction. However, given the rich lore and magic system in Harry Potter, and the limitless imagination of fanfiction writers, it could be a concept that someone has explored. It might be incorporated into a story about a new type of magical artifact or a mysterious ingredient in a potion.
One common theme is the struggle between good and evil. Since Draco is an incubus, there's often a battle within him or with external forces that represent good. Another theme is love and temptation. The allure of an incubus like Draco can lead to complex love stories.