Samurai vs. Ninja vs. Pirate.

[Blight]

Um, you do know ninjas were made up and never actually existed in real life right...?

...Ha ha ha, unless you aren't joking that is. If you aren't use these to inform yourself.

http://www.bujinkanwakodojo.com/bwd_koga...story.html

http://www.ninpo.org/ninpohistory/ninpohistory.html

http://members.tripod.com/OniBushi/id61.htm

And batz was right; their most important role was that of espionage. Later, when it was the time that almost all of the historically documented individual ninja were from, they served as internal security groups (such as the Oniwaban group) and Fujita Seiko who is said to be the last teach/master of the Koga ryu.