Nijū Mensō no Musume (, 二十面相の娘?, lit. The Daughter of Twenty Faces) is a Japanese manga series written and illustrated by manga author Shinji Ohara. The manga was serialized in the seinen manga magazine Comic Flapper between 2002 and 2007, but continued serialization in the same magazine with the title Nijū Mensō no Musume Utsushiyo no Yoru since October 5, 2007. An anime adaptation aired in Japan from April 12, 2008 to September 27, 2008, and was co-produced by Bones and Telecom Animation Film.

The characters in this series have been used with permission from surviving members of Edogawa Rampo, the author who created the fictional characters Nijū-Mensō and Kogoro Akechi.

The series is set in Shōwa period.

Source: Wikipedia