Under normal circumstances, pilots of Artificial Angels need to be cultivated from a young age.
At around the age of three, children are subjected to genetic screening and physical monitoring under the arrangement of the Archangel Group.
Those who meet the cultivation standards will be sent to the Archangel Group's space station to acclimate to the toxicity of the Imitation Angel Cerebrospinal Fluid in advance.
This is an extremely cruel process that can be described as inhumane.
After all, human life is the cheapest currency within the Angel Enterprises Alliance.
Thanks to advanced biotechnology and an alarmingly low ethical baseline, the Alliance can manufacture infants as if on an assembly line.
Basically, only 1% of infants meet the requirements for training as an Artificial Angel Pilot; the rest are processed for Recovery—this would be akin to the practices of a top-tier demonic sect in a world of immortals and martial artists.