Woodpecker Detective's Office

is a 1999 Japanese mystery novel written by Kei Ii. An anime series adaptation by Liden Films premiered from April to June 2020.

Plot
In an alternate Meiji era following the fictionalized versions of the poet Takuboku Ishikawa and the linguist Kyōsuke Kindaichi. Ishikawa is a private investigator. They both investigate a supposed ghost haunting at the Ryōunkaku skyscraper.