Casshern Sins (キャシャーン Sins) is a reboot of the 1973 anime series Casshan, produced by Tatsunoko Productions and animated by Madhouse, it aired from October 2008 to March 2009. The series made its English broadcast premiere on Funimation Channel in December 2010. A manga adaptation was published in Jive's Comic Rush Magazine.
The series discards the continuity presented in the original Casshan anime series, in which Casshern was a cybernetic superhero battling the evil robotic forces of Braiking Boss in a post-apocalyptic Earth. In Casshern Sins, Casshern is presented as a cyborg subordinate of Braiking Boss who was ordered to assassinate the savior of mankind, and has thus doomed the Earth to ruin.
Plot
Casshern Sins tells the story of a world where robots subjugated humanity after becoming self-aware. Their leader, Braiking Boss, ruled over the world with an iron fist. One day, a mysterious girl named Luna was summoned by the people in order to bring the salvation of mankind. Fearing her as a potential threat, Braiking Boss sent three of his most powerful cyborg warriors – Casshern, Dio, and Leda – to dispose of Luna. Casshern, the strongest warrior, managed to track down and kill Luna. However, this triggered "the ruin", a cataclysmic event which set into motion the end of the world. The robots lost their ability to live indefinitely, and began rusting and dying. Hundreds of years later, the world's atmosphere is filled with poison, and, due to the inability of most remaining humans to reproduce, as well as the constant threat posed by the robots, humanity is on the brink of extinction.