Doll child (coming soon)

They travel to escape their pasts. But how could they when they run from a goddess and a demon Lord who never seem to age. On the Red Planet that is dying from the inside out, what will happen to the dwindling human population of Mars? Against such fates, one will destroy any chance of a future, while the other will save their very existence. What awaits these two children as they stand together against impossible odds?
Book version of the anime: avenger (kissanime)