Matsuoka Kunio: Youkai Exterminator - Kurosagi Corpse Delivery Service Spin-Off summary:

Side story/prequel to "The Kurosagi Corpse Delivery Service."Matsuoka Kunio is a writer and anthropologist, but he's much more interested in playing detective. Joined by his long-suffering best friend, a very unorthodox priest, and a boy with the power to raise the dead, he investigates the occult mysteries and murders of early 1900s Japan.