Mail is a horror manga series written and drawn by Housui Yamazaki. The English translation is published by Dark Horse Comics. The series centers around Reiji Akiba(秋葉 零児Akiba Reiji), a private eye who investigates cases dealing with ghosts. He uses a broomhandle pistol called Kagutsuchi(迦具土Kagutsuchi) and hallowed ammunition to shoot ghosts that may or may not have possessed people and seal them inside the bullets which simply drop to the floor. The bullets are later ritually cleansed at a shrine. The pistol also has the ability to revive the dead by shooting a bullet with a ghost sealed inside into its original body. Akiba does this at the beginning of the third and final volume with the ghost of his childhood friend Mikoto Yamaguchi(山口 美琴Yamaguchi Mikoto) and she becomes his sidekick.