Maton no App to Aurora

is a Japanese light novel series written by Sou Akamura, with illustrations by Nerima. The series began publication on December 10, 2012 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
The distant future. The ground where everything was broken and painted gray. In a world always next to death, Masaki continued his journey with a single ax as a weapon. The girl who gave him life-in search of an innocent angel. A cruel but beautiful romantic story.