Hyakki Yagyō
is the first book of Japanese artist Toriyama Sekien's famous "Gazu Hyakki Yagyō" e-hon tetralogy, published in 1776. A version of the tetralogy translated and annotated in English was published in 2016. Although the title translates to "The Illustrated Night Parade of a Hundred Demons", it is based on an idiom, "hyakki yagyō," that is akin to pandemonium in English and implies an uncountable horde. The book is followed by "Konjaku Gazu Zoku Hyakki", "Konjaku Hyakki Shūi", and "Gazu Hyakki Tsurezure Bukuro".