Togakure Ryu - Hidden Door School
Ninpo Tai Jutsu - Stealth/Survival Combat Art

Togakure utilizes a large array of ninja weapons, including the Kosetsu Shogee, shuriken, Shuko/Ashiko hand and foot claws, grappling hooks, etc.  The movements in Togakure Ryu are very low, stretched out and angular - as opposed to circular movements with small foot-base as seen in other arts.  It was developed in highly mountainous areas, and its very low stances and long range attacks make much more sense when put in the context of that terrain. The strategies employed are adapted for survival and escape, such as  throws that direct the attacker away, rolling movements, evasion and "disappearing" skills, and techniques that incapacitate (sometimes brutally and deceptively). When necessary, the emphasis was on escape and spying involving the use of little gadgets, espionage, concealment, sabotage, breaking in and escaping, etc.

The Sakki Test for the rank of Godan (sensing an attack without seeing it) comes from Togakure Ryu