The Place Where the Last Sound Returns?

Long ago, this world existed as a single, unified entity. Humanity thrived by harnessing sound as their primary source of energy, building an entire civilization upon the advanced technology used to manipulate and control acoustics. It was an era defined by harmony and progress, where the mastery of sound shaped every aspect of daily life and societal development. However, that golden age came to a sudden and devastating end when a catastrophic world war erupted across the globe. The true cause of this unprecedented conflict remains entirely unknown, lost to the chaos of the era. The war shattered the unity of the world, leaving devastation in its wake and forever altering the course of human history. Countless years have passed since the great war ravaged the planet. As generations turned to dust, the memories of the catastrophic conflict gradually faded from the minds of the people. Eventually, the war was not merely forgotten by the survivors—it vanished completely from the annals of history itself, leaving behind a world ignorant of its own fractured past and the ancient power it once wielded.