Hyakki Yako. A Japanese-style Halloween event around Kakegawa Castle. Visitors are welcome to participate in costume and pose for photos by the castle. . In this concept EP, five. Want more inspiration? Browse our search results. Inspirational designs, illustrations, and graphic elements from the world's best designers. About this album In Japanese folklore, "Hyakki Yako (百鬼夜行, ひゃっきやぎょう) " means "Night Parade of One Hundred Demons".