Mountains and Seas Volume 1

All the blue seas and green forests have withered, the earth is swallowed up by filth, and natural resources are on the verge of exhaustion. Countries are fighting for the last ray of light to seize these resources, and they are fighting against each other, and the war is burning. Just when the end was approaching and despair enveloped everything, a mysterious organization appeared. With a snap of their fingers, they used power beyond human cognition to end the frenzied war sweeping the world, holding the broken world in the palm of their hands. However, just as all mankind looked up in trembling, they disappeared like phantoms and never appeared in the world again. From that day on, all the names of countries were annihilated, and there were no borders in the world. The whole world was collectively called the Alliance, and that mysterious organization was called "The Messenger" by everyone. Twenty years have passed, and language, writing, and currency have all been unified. Humanity has finally ushered in unprecedented..."Unification."