The world is made up of two fundamental forces: “Ash” and “Time.” Upon awakening, every living being must choose between becoming an “Ash Cultivator,” who burns away their life to gain explosive power, and a “Chronologist,” who manipulates time but suffers the backlash of causality. The protagonist unexpectedly awakens both forces, becoming the “Ash-Time Apostle,” a forbidden existence unseen for a thousand years.