Ferryman. Sol Senate Cycle - Diaspora, #2

Digital Twins are big business. It is 2450AD and the Sol Senate desperately needs something that is in critically short supply to sustain itself and its technologies: actual human beings. Digital Twins are supposed to be exact copies of human minds, but are they really? Xe! is a Ferryman collecting and dispatching digital packages in the Light-scape from the outpost at Sedna. This is its story. Caught up in affairs way above its specification, Xe! must dredge deep into its digital banks to recall what it was like to be human.
In order to unravel what appears to be a sinister alliance between the Sol Senate human elite and an Alien Species, Xe! must go where no Digital Twin has ever gone before. Xe! has a unique class of mind and is undaunted by challenges, because Xe! is a Ferryman!