Water, air, earth, and sunlight, are the catalysts for the growth of all things. In 2276, everything has long since been exhausted, and humanity can only live within cities enclosed by massive defensive walls.,All of this is thanks to the new materials brought by the planetary impact. Humanity survived once again, and afterward, they divided themselves into cities, each within a vast isolation wall, gradually restoring their ecosystems to allow for human survival and reproduction.,“Master Administrator, I'm Jean from Department 13. I heard that last month a hotel was damaged in the Mid-Tier City, causing the Congress to pay a large sum of money as compensation and even injuring hundreds of civilians. Is this true”。