The worst thing about the end of the world is we did it to ourselves. Isaac Thoma lived to see the last handful of survivors defeat the demonic champion. He is now alone, his past in ashes, the last and most powerful human on a blighted Earth. But what if he could go back?

Hurled back in time, Isaac has one chance to change it all. A chance to warn humanity of their impending doom. A chance to stop the [System] before shortsightedness and lust for power can render humanity extinct. Facing malign deities, demonic hordes, and the unstoppable march of human greed, Isaac will give his all to prevent the end that has already happened on the day the world became quantified.