Mail

Private detective Reiji Akiba operates under a singular conviction: the unsettling coincidences and awkward moments that permeate daily life are not random chance, but deliberate communications from the deceased. These spectral encounters function as messages from beyond, yet engaging with such supernatural correspondence carries profound danger for those unprepared to receive it. Most people remain blissfully unaware of these ghostly attachments, but Akiba possesses the rare ability to perceive them clearly, making him the only person capable of safely intercepting this eerie mail before it harms the living. To manage these volatile interactions, Akiba wields a specialized firearm known as Kagutsuchi, a weapon whose name translates to "the tool between God and earth." This unique instrument is specifically designed to destroy entities that no longer possess life, allowing him to confront malevolent spirits that ordinary means cannot touch. Rather than merely solving crimes in the traditional sense, his investigations serve a sacred purpose: digging divine graves to lay restless evil dead to eternal rest. Through this extraordinary fusion of detective work and spiritual exorcism, Akiba navigates the perilous boundary between the mortal world and the afterlife, ensuring that dangerous messages from beyond never reach their unintended recipients.