The Era Of Survival was a time period lasting from 2022 to 2073, where large portions of the earth were uninhabitable, and the governments of many large countries were collapsed due to a large scale nuclear war called The Nationalist-Globalist War. During this time period, the global population had been reduced by an approximate 63%, and civilization existed only in small corners of the world. Many humans were left to survive on their own in an apocalyptic world.