sentences:  It is from texts recorded by historian Kunio Yanagita that introduced, through their legends and tales, of the concept of being spirited away into Japanese popular culture.According to Yanagita, the Yamabito were "descendants of a real, separate aboriginal race of people who were long ago forced into the mountains by the Japanese who then populated the plains" during the Jōmon period.Yanagita wrote down these folktales in the book "Tono Monogatari", though as author Sadler notes