The Guardians Trilogy, book 1: The X-VariantRosemary Cole2017

In 2079, a devastating synthetic virus is unleashed that destroys most of humanity. Over the following centuries, however, the virus evolves into a beneficial symbiont that enhances and interconnects its human hosts, and a new post-human race is born: the Unathi.

But in 2616, their peaceful utopia is violently disrupted when the symbiont begins to mutate into something terrible. Kala is one of those called upon to travel back in time to 2079 to change the course of the future. In a desperate attempt to save the future of humanity, Kala will face many hardships and perhaps even meet her own end, but she never dreams that it will one day turn her against even the ones she loves the most.

Titre original : The Guardians Trilogy, book 1: The X-Variant (2017)