After a crimson meteor streaked across the sky, human civilization came to a standstill. From that day forward, people could no longer build a rocket, a nuclear bomb, an airplane, a car... The pyramid of civilization built by modern science collapsed with a thunderous crash, but the disaster was far from over. A gray world descended with the crimson meteor, like a ghostly reflection behind a mirror, gradually dragging the civilized world into an abyss of chaos. In this era, human lives are as insignificant as dust; in this era, humanity shines as brightly as stars. As the edifice teeters on the brink of collapse, some witness an actor standing tall amid the ruins of civilization, with a red cape like blood, sometimes laughing, sometimes crying. The curtain of the age slowly opens behind him as he spreads his arms and whispers to the masses-"My play ...... is about to start."