A too-idle Lord of the Underworld and a young man with a tragic life experience became archers in the apocalypse, dominating the apocalypse, and no one dared to mess with them. Two figures, one silver and one black, shuttled around the rooftops, killing monsters instantly. The two became brothers, but in the end, the boy discovered that the so-called apocalypse was actually just a game played by the Lord of the Underworld out of boredom.