When night falls over Osaka’s premier entertainment district, a deep darkness gathers, as vagrants and bar-hoppers alike flock to late-night minimarts to feed their basest cravings and vices...

Hoping to harvest this evil energy for her own ends, the haughty-but-hardworking demon Allura has come to the human world to work at one such convenience store—where she quickly finds that the night shift sucks, and she can’t reap the precious human evil she wanted. Will she be able to hold down the job, or will the crushing reality of working retail send her back to the underworld?!