One common theme is the struggle between different vampire factions. In a school setting, there might be different clans or types of vampires vying for power or control. For example, in 'Vampire Academy', there are the Moroi (good vampires) and the Strigoi (evil vampires), and the students are constantly in the middle of their battles.
The theme of identity is prevalent as well. Characters, especially those who are half - vampire or new to the vampire world, are often trying to figure out who they are. In a school environment, which is a place for self - discovery, they are dealing with their vampire nature while also trying to fit in with normal human society or the vampire society within the school.
Romance is also a big theme. Vampires are often depicted as alluring and mysterious, so there are usually love stories between human - vampire or different types of vampire characters. In many vampire school novels, the main character falls in love with a vampire or someone with vampire - related powers. This adds an element of passion and drama to the story.
Power struggles within the vampire community are also common. In high school, different vampire groups might compete for control or resources. This can lead to intense battles and political intrigue.
Love is a very common theme. Usually, it's a forbidden love between a human (Sakura) and a vampire (Sasuke). Another theme is the struggle for identity. Sasuke, as a vampire, may struggle with his nature while Sakura might have to deal with her feelings for someone so different.
One common theme is the forbidden love between Sasuke and Naruto. Since Sasuke is a vampire and Naruto is often a human or from a different 'world' in the fanfiction, their love is usually against some rules or norms in the vampire high school society.
Another theme is self - discovery. In these stories, the characters, especially the ones involved in the love story, often discover new aspects of themselves. For example, a human might discover a hidden strength or a vampire might realize a new side of their emotions because of the relationship.
The theme of secrecy is also quite prevalent. Sasuke usually has to keep his vampire identity a secret from most people in the high school, including Hinata at the start. This secrecy adds an element of mystery and suspense to the story. It also leads to many plot twists when the secret is either on the verge of being revealed or actually is revealed. It's like a ticking time bomb in the story that keeps the readers on their toes.
In vampire space novels, a recurring theme is the search for a home. Since they are often outcasts or predators, they are constantly looking for a place where they can exist without persecution. Another theme is the evolution of vampires. In the space setting, they may evolve different abilities to cope with the new challenges. Also, the theme of secrecy is present. Vampires usually try to keep their existence a secret from other species in space to avoid being hunted or studied.
The power of faith is a huge theme. The Christian characters in these novels rely on their faith in God to combat the vampiric threats. Also, the idea of the soul is important. Vampires are often seen as soulless or having lost their souls, and this contrasts with the Christian concept of the soul's significance. And there is often a theme of sacrifice, where characters may sacrifice themselves in the name of good and in line with Christian values.
Love is a very common theme. In many supernatural vampire novels, there is often a romantic relationship between a human and a vampire, like in 'Twilight'.
Another theme is redemption. Sometimes, a vampire character may be on a journey to redeem themselves, especially if they have a human side or some sort of moral compass. This can be seen in how they interact with the human characters in the story. It's like they are trying to atone for their vampiric nature in a world full of cowboys and saloons.
Power dynamics is another theme. The vampire character usually has more power, physically and sometimes socially. This can create an interesting dynamic in the relationship as the human or non - vampire character has to navigate this inequality.