Casshern Sins

  In Casshern Sins robots have become self-aware. Their leader Braiking Boss ruled over the world with an iron fist. Luna is summoned by the people to bring the salvation of mankind. Braiking Boss saw Luna as a threat to his robot empire so he sent three of his most powerful warriors to kill  Luna, Casshern, Dio, and Leda. They all posses the same strength as each other, but Casshern was the strongest warrior because he lacked emotions. Casshern kills Luna plunging the world into ruin. Dio always hated Casshern because no matter how hard he tried Casshern was always better than him. Hundreds of years later the world's atmosphere is filled with poison, and most surviving humans cant reproduce. Robots begin to die like humans because the environment quickly causes their mechanical bodies to rust and corrode, and there are no factories to make new parts or new robots. Casshern disappeared after he assassinated Luna, and when he awakens he has no memory of who he is or what he had done. As he embarks on a journey to find out the truth about himself he meets many people that want to kill him and devour his flesh. They want to devour his flesh because he is immortal and they think that if they eat his flesh they will live forever. At the end of the series he stops the ruin and disappears never to be seen again, saying he will return if people ever forget about death. Overal I thought the series was okay. I just wish it had a better ending and a little bit longer and more detailed plot.