In the broken continent of "Iseland", the demonic tide swept across after the fall of divinity, and the old nobles and the church were struggling to survive. Civilization retreats behind high walls, and outside the walls are twisted aberrations and scavengers. Magic is no longer an elegant art, but a taboo transaction at the expense of life force, known as "drinking poison to quench thirst." •
The superpower named "Echo" is regarded as a plague, but it is also the only weapon against the demonic tide. As a wanted "living god", Linn not only has to avoid being hunted by the church's tribunal, but also needs to unravel the ancient curse flowing in his own blood. Will he become a demon king who destroys the world, or a tyrant who reshapes order?
