After demons mysteriously appeared and started to terrorize society, an elite task force was formed to deal with the outbreak of attacks. Fighting with special weapons called Imperiums, crafted from the infernal cores of the demons they hunt down, the Demon Defense Agency is now humanity’s last hope.
And Atlas is the world’s greatest Defender, a young man with the most confirmed demon kills. But after discovering a dark secret about the agency he works for, Atlas is forced to go on the run. With enemies all around him and nothing to fall back on, how will he survive and prevent the apocalypse?