"Every day that we've lived together like this, I've found something that makes me happy. This is the first time I've been like this. I'm really glad that I didn't kill you."
"Eternal life... Quickly! I must eradicate death."
"It's unnatural for living things to die. Death is impure evil. It must be ruined."
"Lyuze! No, Lyuze! Don't die!"
"Casshern, you and Luna may both be our punishment for trying to control life and death. Because of that, the world became distorted. Only God knows if it will return to normal!"
"If they can live, then it's better than dying. I can't deny them that. However, if you... If any of you ever forget death, then I will return."
The artwork of Casshern Sins might not be anything spectacular but it is a must-watch for its deep meaning. There is great wisdom which ought to be discovered beneath its ridiculous-sounding story.
Without death, it means nothing to be alive.