But then one day everything changed....

A poor farmer was scattering through his house, searching desperately for what little money he had left. Scrambling through old furniture, through his two rooms, his wife was sick in bed, children died about a year ago from starvation, he searched still. The tax collector came to his door and pounded on it like a gong, he ordered the poor farmer to pay up. However the farmer could find no money through out his home. He opened the door in shame and grief as he knew his life was coming to an end. He would surely just put his wife out of misery and "save her". He stood boldly in front of the samurai, he closed his eyes as he expected his fate, with no movement or pain or any sort of response, the farmer opened his eyes to find the samurai on his feet. He looked closer at the body and found a ninja star in his back with a note attached to it. It read, "Live on", the farmer could not believe his luck, he pranced back into his home where he layed next to his wife, where they together enjoyed a time of peace.

I think thats maybe how they started to become known to the world as the silent killers. Neither good nor evil, they only do what is right.