Shinobi: Shadows of Nihon is a historical reference and sourcebook for the Sengoku RPG. The book takes an in-depth look at the history and traditions of the ninjutsu ryu and shinobi clans of feudal Japan, as well as the equipment and methods used by the shinobi.
Shinobi: Shadows of Nihon contains additional information for both GMs and players, including: New Skills; New Equipment; New Weapons; Ninpo Mikkyo; New Shinobi Profession Templates; GM Tips for running shinobi-based campaigns and including shinobi in "traditional" PC groups; and more!