The young and passionate Shadow rescued the kidnapped Light, and then a small energy conversion allowed them to cross the entire cycle of human civilization and meet again. From the barbaric primitive tribes to the slave kingdom of witchcraft, from the collapse of law to the establishment of a powerful empire, from the age of peace without faith to the end of the world when the death knell is ringing again, what is the meaning of the endless life of light and shadow? The ultimate hero? A cold demon? Or a crazy world destroyer?