MF Bunko J
"Aria the Scarlet Ammo" is a light novel series written by Chūgaku Akamatsu, with illustrations by Kobuichi. Media Factory published the first novel on August 25, 2008 under their MF Bunko J imprint. As of 2019, 31 main novels have been released. A spin-off novel, "Aria the Scarlet Ammo Reloaded", was published on December 25, 2012. A light novel adaptation of "Aria the Scarlet Ammo AA" was published in four volumes in 2015. The first two novels were published in English digitally by Digital Manga in 2013 and 2014.