Himitsunobasho

Meaning "Secret Place" in Common, they are a handful of hidden villages scattered across Hagakarin.
Through rumor and legends the people know of these villages' existence, but few people outside of those born there and select high-ranking Hagakarinese government and military officials know the villages' actual locations.
In these secret places, the inhabitants train in the mysterious and deadly ninja arts.
The ninja, also called shinobi, from the Himitsunobasho villages are an elite branch of the Hagakarin military, acting as master spies, saboteurs, scouts, assassins, counter-terrorists, or bodyguards.
Although some of the more powerful ninja clans pursue their own agendas in tandem with their duties as a branch of the Hagakarinese military.