is a reboot of the classic anime series Neo Human Casshern, animated by Madhouse. It premiered in Japan on October 1, 2008, following a sneak preview of the first episode at Otakon 2008 in Baltimore, Maryland.
The series completely discards the continuity presented in the original Neo-Human Casshern anime series, in which Casshern was a cybernetic superhero battling the evil robotic forces of Buraiking Boss (often mistranslated in English as "Black King Boss"; the name derives from the Japanese 無頼 or burai, meaning rouge or brute) in a post-apocalyptic Earth. Casshern Sins made its English broadcast premier on Funimation Channel on December 21, 2010. A manga adaptation had been announced recently and it was published in Jive's Monthly Comic Rush Magazine.
Created as a reboot of the Casshern franchise, Casshern Sins tells the story of a world where robots subjugated humanity after becoming self-aware. Their leader, Buraiking Boss, ruled over the world with an iron fist. One day, a mysterious girl named Luna is summoned by the people, in order to bring the salvation of mankind. Fearing her as a potential threat, Buraiking Boss sent three of his most powerful cyborg warriors to dispose of Luna: Casshern, Dio and Leda. Casshern, the strongest warrior, manages to track down and kill Luna. However, this triggers a cataclysmic event which sets into motion the end of the world. 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.
Robots fare little better, fearing death as much as humans do: the poisonous environment quickly causes their mechanical bodies to rust and corrode, forcing them to constantly replace their damaged parts, if spare parts in good condition can even be found. In this wretched time and place, Casshern, who had disappeared following the assassination of Luna, returns with no memory of who he is or what he had done. As he embarks on a journey to find out the truth about himself, Casshern will discover his true purpose and destiny.
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Official Site: Funimation
Links: Casshern Sins Wiki Entry Casshern Sins TV Casshern Funimation Site