The Kagerou Project is a series of songs by the Vocaloid song producer Shizen no Teki-P, or Jin. There have been twelve songs uploaded to the Japanese video sharing site Nico Nico Douga and four songs exclusively for the album Mechanical City Days. A light novel series, titled Kagerou Days, was released and lasted for 13 volumes. A manga by the same name was published monthly on Comic Gene, illustrated by Satou Mahiro. An anime adaption by Shaft premiered in April 2014 titled "Mekakucity Actors", with a movie adaptation in 2016 called "Kagerou Daze -in a day's-".
