The Star and the Stellae (The Stellae Series Book 1)

Love, life, and the lifeless death. A spherical city floats in space, inhabited by humans of unknown origins. Those who oppose the power structure are sent through the floor into the vacuum of space to meet the lifeless death. Diana and Vesta are lovers who share everything, until Vesta's involvement with the resistance shatters their relationship. Diana meets a biohacker fugitive named Janus who is developing a virus that will murder the Stellae, a cluster of human souls, which shine like stars and order the oppression of the living. Diana must decide whether love is worth dying for, and if it is, can there be a death worth living?