A science fiction military story about a former military engineer who struggles to survive amidst a complex crisis after becoming a PMC tactical commander. This story contains the following elements: 1. Nuclear wasteland, global pollution, mutated monsters, artificial intelligence, unmanned combat, the return of the Soviet Union, global government, factional infighting, human rights struggles, unknown ruins, human ascension; 2. Girls' Frontline universe. Note: Readers unfamiliar with Girls' Frontline can also enjoy this story easily.