sweet
um...pay no mind to know it all below me.
ninjas were not assassins for hire. the martial art that became ninjutsu was taught to refugee chinese and japanese familys who fled to the forest and mountains to escape the government or war. 300 years later, ninjutsu is born.
ninja gaiden/DOA's ryu hayabusa was modeled after hattori hanzo. he was an assassin for hire. he was a ninja. he had no relation to ninjutsu or the way of life therein. AWESOME movie bro.