ninjastu

Ninja:Aassassin of darkness,they used to be trained from the age of 5 to 7.The were trained in such a away that ,they can move like a falling leaf without making any noise.They were trained so much that,they can even here the sound of falling needle in another room.
Darkness was meant to be there best weapon.
Those who have mangas or have heard stories about them from there grandparents in childhood.They know very well how dangers ninjas were.
In the ancient history they used to be hired by higher authorization as secret weapon.