Casshern Sins

In a far-off future, Earth has collapsed into a barren wasteland and humanity is long gone. The world is left to sentient robots who once believed they would endure forever—until Luna’s death ushered in the Ruin. Now corrosion is inevitable, and with no way to stop their bodies from rusting away, many are forced to confront the certainty of their own end. A desperate rumor spreads: consuming the one known as Casshern can grant immortality.

Casshern himself wanders without memories, unsure of his purpose or even his nature, yet drawn to uncover what happened and why he exists. Hunted relentlessly by robots unwilling to die, he moves through a landscape marked by violence and loss, searching for answers amid the decay closing in on everything around him.