Ayakashi refers to supernatural beings or spirits in Japanese folklore, often associated with the concept of yokai and yurei. These entities can take various forms, including animals, humans, or inanimate objects, and are believed to possess both benevolent and malevolent characteristics. In modern culture, Ayakashi has been popularized through various media, including anime and manga. One notable example is the Ayakashi: Samurai Horror Tales series, which adapts classic Japanese horror stories, showcasing the rich tradition of folklore and the eerie nature of these supernatural beings.