[Machine Translation] War howls. Isolated from the rest of the world, Japan is invaded by the mysterious monster Yotsute. Amidst the chaos, Sai, a reclusive young man who holds the key to discovering the true identity of the Yotsute, sets off for Yokota Air Base, the U.S. military base in Japan, accompanied by government agent Abeno. In war-torn Tokyo, many people are cruelly killed in the face of the overwhelming Yotsute forces, and Abeno is shot through the stomach with an arrow. In order to save the dying Abeno, Sai and the monk Kimitake are forced to risk their lives to break through the Tama Bridge, which is being regrouped by the Yotsutei, and in the midst of the devastation, a calamity called "war" befalls Japan, which has grown accustomed to peaceful daily life. The war is a disaster that will strike Japan, a country that has grown accustomed to a peaceful life.