Book of Shadows

The Book of Shadows was allegued to be written by the prophet Rosoku, but even its existence was only a rumor. It was supposedly the Seventh Book of Enlightenment, one that was lost and omitted from those discovered and possessed by the Keepers of the Books of Enlightenment.

Quest
In 1170 the Provincial Governor Chuyo sent a group of samurai to find it in the mountain range near his province.