Well, it's often depicted as having a dark allure. It might be described as thick and rich, with a color that's deeper than normal blood. In vampire novels, it can symbolize power and immortality for the vampires.
The 'Blood and Roses Vampire Novel' might be centered around the classic themes often found in vampire literature. It could involve a complex relationship between blood, which is a vital element for vampires, and roses, which might symbolize beauty, love or perhaps danger. For example, the roses could be used as a cover for the vampires' lair, or a character might be lured by the beauty of roses into a vampire's trap.
A fanfiction might focus on Doris' relationship with the people in her village. It could show how her life was before D's arrival, her daily routines, and how she was seen by the villagers. For example, perhaps she was a bit of an outcast because of her family's past, and this could add more depth to her character.
The number of Vampire Hunter D novels varies depending on different editions and releases. Generally, there are around a dozen or so. However, this can change over time with new additions to the series.
The blood in vampire novels is different as it often has special properties. Normal blood just sustains life in humans, but vampire - novel blood can give vampires extraordinary powers.
One great 'Blood the Last Vampire' fanfiction is 'The Hidden World'. It delves deeper into the backstories of the characters. It gives more details about Saya's past and her relationship with the other vampires. The author does an amazing job of creating a more immersive world within the existing 'Blood the Last Vampire' universe.