Tags: Manga.
Mail is a horror manga series written and illustrated 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.