One common theme is the struggle between good and evil. Since Harry has some demon - like aspects, he often has to decide whether to use his new powers for good or give in to the darker temptations. For example, in many fanfics, he might be tempted to use his powers to get revenge on his enemies.
A common theme is the exploration of the unknown. Harry the demon often finds himself in situations or places that are unfamiliar. This could be a new dimension, a hidden realm, or a situation that defies the normal rules. Another theme is identity. Is he just a demon, or can he be something more? Fanfics often play with this idea, showing Harry's journey to define himself beyond his demonic label.
Power struggle is a common theme. The demon lord often represents a powerful and menacing force, creating a power imbalance in the wizarding world. Characters then have to either resist or be tempted by this power.
Common themes often include power dynamics. Since Harry is a demon, he may have new and different powers. Fanfics might explore how he uses or controls these powers, and how they affect his relationships with others like Hermione and Ron. Also, the theme of redemption can be present. Even as a demon, Harry may strive to do good, and the story could be about his journey towards redemption.
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 the struggle between good and evil. Since the hero is a demon, there's often a conflict within them about whether to follow their demonic instincts or do good. Another theme is redemption. Many of these fanfics show the demon hero trying to make up for past wrongs.
A frequent theme is redemption. There are fanfics where demons or even some slayers who have made mistakes seek redemption. Also, the theme of family is quite common. Some stories might explore the family members of the slayers or how the slayers create a family - like bond within their group. And there's also the theme of sacrifice, as slayers often have to put themselves in danger or sacrifice things for the greater good.
A common theme is power struggle. Since Naruto is often associated with a demon in these fanfics, he has to deal with the newfound power and how it affects his relationships with others. Another theme is identity. Naruto has to figure out who he is now that he has this demon - related aspect to him.
One common theme is identity crisis. Harry has to come to terms with being a shadow demon instead of just a wizard. Another theme could be power and its corrupting influence. Since shadow demons are often associated with darker powers, it's about whether Harry can control it or not.
One common theme is power and its consequences. Since Hermione has demon - like powers, it often explores how she copes with the new - found power and how it affects her relationship with Harry. For example, she might struggle to control her powers which could put Harry in danger at times.
One common theme is identity struggle. Harry has to figure out how being a submissive demon fits into his existing identity as a wizard. Another theme is acceptance, both self - acceptance and acceptance from others like his friends at Hogwarts.