That shit is messed up! He is really taking that ninja stuff seriously, isn't he? LMAO!
Actually, didn't there USED to be a thing called Nijitsu or some shit? They were like the 'robin hood's' of Japan? Something like fighting the Emperors Samuria?? Shit, I don't know........I might ask that guy, I am sure he knows! LOL!
ninjitsu still is a recognized Japanese martial art.
but they rarely fought anyone directly... they were sneaky assassins (knives, poison, disguises etc) and spies