As the embodiment of the will of the Mechanical Council, these Autonomous Units constantly roamed between the earth and sky, opening up sanctuaries for the once-native humans, while the Newborn Races were undoubtedly their greatest enemy as the opposing side.
There was no surrender in the battle, nor could there be any abandonment; these machines executing the original code were ruthless, not because the higher-up Mechanical Angels who set the programs were heartless, but because there's no room for compassion in reality anymore. In the era of the Fifth Epoch, there was no space for reconciliation between them, especially as the native humans were almost on the brink of extinction.
Fighting went on from night to day, from holding fast to retreating, from an initial sky full of butterfly wings to sparse, scattered feathers.
