I'm not entirely sure as I haven't read it in detail. But generally, it might be about vampires and perhaps some kind of final battle or situation involving blood. It could center around a vampire character's journey or a conflict within the vampire world.
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.
Archive of Our Own (AO3) is another great place. It has a lot of well - written 'Blood the Last Vampire' fanfictions. The site is known for its diverse range of stories and a very active community of writers and readers. You can easily search for fanfics based on tags, ratings, etc.
The difference lies in its take on vampires. It may not have the same old clichés. For instance, the vampires here could have unique abilities or weaknesses not commonly seen in other vampire - themed works.
The Blood Hunters that often appeared in anime referred to an organization of hunters that specialized in hunting vampires. Vampires were a very terrifying existence in anime and novels. They would resurrect over time and have superhuman strength and abilities. The purpose of the Blood Hunters Organization was to protect humans from the threat of vampires and to destroy those who had been resurrected illegally.
Does it have anything to do with vampire hunters? The Hunter Organization in Vampire Hunter D was a form of the Blood Hunter Organization. The Bloodhunt Organization was a very powerful existence in both anime and novels. They had superb combat skills and equipment and had a very strong hatred for vampires. In the anime, Vampire Hunter D, the Hunter Organization also existed to protect humans from the threat of vampires.
Well, one interesting point is its unique vampire concept. It might deviate from the typical vampire lore we're used to. The characters in the light novels are often complex, with their own motives and backstories that make them more than just simple good or bad guys.
Often, it's described as thick and rich. It might have a dark, almost alluring color like a deep red or even a purplish hue. The smell of it is sometimes described as intoxicating, drawing the vampires towards it.