Shōninki
From Wikipedia, the free encyclopedia
The Shōninki (Japanese 正 忍 記) is a medieval ninja document from Kishū province.
Written by Natori Masatake in 1681 it describes the espionage strategies of the shinobi from Kishū. Together with the Bansenshukai and Ninpiden it is one of three major extant writings of the ninja.[1] An original copy of the Shōninki is in the State Library of Tokyo.