Defiance (Prequel to The Legacy Human) by Susan Kaye Quinn
Most of humanity has ascended into hyper-intelligent human/machine hybrids, but legacy humans like Cyrus Kowalski are used to skirting the laws they've laid down--after all, he knows the ascenders only pretend to care about the legacy pets they keep. But when a woman Cyrus loves like a mother is stricken by a disease the ascenders refuse to cure, he has to decide how far he can go without getting banished from the legacy city that's always been his home.
DEFIANCE is a prequel novella to the first book in the Singularity series, THE LEGACY HUMAN. This young adult science fiction series explores the intersection of mind, body, and soul in a post-Singularity world.
SINGULARITY SERIES READING ORDER:
Defiance (Prequel to The Legacy Human)
The Legacy Human (Book 1)
The Duality Bridge (Book 2)
The Stories of Singularity Novella Box Set (Short Stories #1-4)
The Illusory Prophet (Book 3)
Awakening Novella (Short Story #5)