Arkadi and the Lost Titan, bd

It's Year 10,000 of the Still era, and Earth has stopped moving. Half of the world is plunged into frigid Night, the other is scorched in Day. Nestled in the heart of this everlasting night is Dis, the last fabled domed-city, ruled by artificial intelligence. There live the Chosen, the last biologically pure humans, who are completely reliant for their survival on cyborgs known as Titans.
In Twilight, the thin strip of habitable zone at the edge of Day and Night, survives the rest of humanity. In the small village of Accaia, a wandering warrior meets a sorceress and fathers a child, Arkadi.
It is during these trials that Arkadi will rebel against the established order and discover his true power and set forth on a quest.