Beings from outside of reality are rampaging through our world, eating everything in site. They don't just consume flesh, however, they consume a person's entire existance. The only thing that prevents us from realizing are "torches" - temporary replacemetns that slowly fade away, until no one remembers the victims at all. When he is saved from a rampaging monster by girls with eyes of fire, Yuji learns this the hard way. He himself was eaten long ago and now he's just a temporary replacement with only so long to live...