"That man said to me, 'to exact your revenge you will need a mighty power. A power to violate or obliterate the laws of this world and change it forever.' He told me I could obtain that power if i was willing to sacrifice. I would have to abandon my human heart. What heart? I don't need any human heart? What good is it? I abandoned it a long time ago. A human heart -what is a human heart? What a useless organ -much more trouble than it's worth. What did the human heart ever do for me? What did the human heart ever do for my mother. Those people, those miserable pigs don't deserve to live -so why don't you kill them? There is nothing stopping you. I have been chosen -I don't have to worry about those swine anymore. Destroy them... do them in.... end their lives... MURDER every last one. And then.... become a demon. I'll show you once and for all why we call it the dark arts."
- Tendo Kozunu, Episode 13, Toyko Majin Gakuen Kenpucho