Vampire

Vampires are a species of Archenemy characterised by their need to drink blood. The most notable vampire is Erika Amatsu, one of the two heroines of the series and one half of its title.

Description
Vampires are humans who were cursed by god, either due to violating a taboo or being attacked by a Vampire (the latter also being seen as violating a taboo).

Vampires have a number of superhuman capabilities: strength 10-20 times greater than a human, rapid regeneration from most injuries, the ability to transform humans into Vampires by sucking a lethal amount of blood (~1-2 litres), and other skills depending on the individual (e.g. changing size, controlling weather, transforming into animals). However, they also have numerous weaknesses: they burn in direct sunlight if outdoors (though are unaffected if indoors), thorough damage to the heart immobilises them, a stake (if made of ash or hawthorn wood) to the heart will instantly kill them, fire can kill them if their entire body is burned, they cannot cross running water, they cannot visit a house without the owner's permission, they have no reflection in mirrors, and they are vulnerable to weapons made of consecrated steel that was cooled in holy water. The weakness to water is psychosomatic, being based on the Vampire's own perception of water. Water in plumbing or underground water veins will not affect them as they are unaware of it. Conversely, the sound of running water, if realistic enough, can produce an effect not inferior to actual water.

Queen and King Vampires stand at the top of Vampire society. These have an appearance that fits human beauty standards, allowing them to blend into human society. Because of this, they are highly prized by other Vampires.

Vampire society is divided into organisations of thirteen people each, such as the 13 Eastern European Families. These organisations serve multiple purposes. One is to regulate Vampire feeding on humans in order to avoid causing a Vampire pandemic. This involves creating registers of the names of humans that have been fed on by a Vampire to prevent them being targeted more than once (which could kill the human or turn them into a Vampire). The other purpose is for each member of the group to keep a distance between them, to prevent the entire group being wiped out by a single attack. For a new group to be formed, it must first receive the approval of all existing groups.

Examples

 * Amatsu Erika
 * Polish Vampire Princess
 * Fly Villiers
 * Elizabeth
 * Yuri
 * Ruthven
 * Child of Judas
 * Vrykolakas