In a town where youkai exist unnoticed by humans the protagonist has a peculiar job as a shinigami. Among the shinigami's that deal with human deaths there are various companies with different scopes. The protagonist belongs to one such company called 'Yomi' and every night she goes out to steal the lives of humans. But one day a boy named Fujishiro Takumi that should have been killed shows up alive. The protagonist starts searching for a reason why he is still living. In order to get to the bottom of the mystery the other shinigami groups start to cooperate. And her blood soaked daily life starts to change.