The Old Song of Kongyu

The world is like a huge hourglass, in which the grains of sand called human beings fall from the sky island above just to return home. In the process of continuous falling, human beings gradually evolved into another new creature-"angel". Even if you continue to suffer the damage of falling, please always return to your hometown. Even though the world has been torn apart by the last 13 angels. Even if things have changed when you open your eyes again, please don't forget your beliefs. Asahikawa! My only hero! Please take me back to my hometown!