Private detective Reiji Akiba holds a theory regarding the awkward moments and strange coincidences we all experience in life. He believes they are actually encounters with the dead, serving as their method of sending us a message. However, you might not wish to open such peculiar mail from beyond—not unless you possess the ability to see the ghostly attachment, as Akiba does, and not unless you carry a firearm capable of killing what is not alive, like Akiba’s aptly named Kagutsuchi. This weapon, described as the tool between God and earth, digs a divine grave to lay the evil dead to rest.