Private detective Reiji Akiba has a theory about those awkward moments and weird coincidences we all encounter in life. They are actually encounters with the dead - their way of sending us a message. But you may not want to open such strange mail from beyond - not unless you can see the ghostly attachment, like Akiba can. And not unless you carry a tool that can kill what isn't alive, like Akiba's sanctified gun Kagutsuchi... digging a divine grave to lay to rest the evil dead!