In the world created by Kinoko Nasu and used in various works by Type-Moon, the term Vampire is used as a common denominator for most kinds of bloodsucking species predominant in occidental regions. Though they share some similarities, these vampires are significantly different from their traditional literary counterparts on a considerable number of aspects, from their nature to their abilities. Though their primary appearance is within the visual novel Tsukihime, they appear in some side-stories and are treated as an important aspect of Nasu’s world setting.