One type of Noh performance. These are Noh stories in which the human roles pray and recite Buddhist sutras, and the mysterious signs of Shinto and Buddhist deities appear as ghostly visions. Japan has been full of ghost stories since the Heian period, as well as secret Buddhist protective ceremonies. They also served as advertisements for the Buddhist temples that acted as the patrons of Noh at the time, with many reigen-noh works created even before the advent of mugen-noh, Noh made up of illusion seen by the waki. Reigen-noh plays include Tanikō, Aisomegawa, Kokaji and Kuzu.