One day, an inexplicable RR virus appeared on Earth, plunging the world into a disaster. Infected animals mutate into terrifying monsters, invading on a large scale, and humans face destruction by building walls and establishing base cities as their last fortress. The hardships that humans have experienced during this period are known as the "great."
One day, an inexplicable RR virus appeared on Earth, plunging the world into a disaster. Infected animals mutate into terrifying monsters, invading on a large scale, and humans face destruction by building walls and establishing base cities as their last fortress. The hardships that humans have experienced during this period are known as the "great."