Sixteen-year-old nina kane should be worrying about her immortal soul, but she's too busy trying to actually survive. Her town's population has been decimated by soul-consuming demons, and souls are in short supply. Watc...Sixteen-year-old nina kane should be worrying about her immortal soul, but she's too busy trying to actually survive. Her town's population has been decimated by soul-consuming demons, and souls are in short supply. Watching over her younger sister, mellie, and scraping together food and money are all that matters.