The manga is an adaptation of Okada’s Boku to 23-nin no Dorei novels, which initially serialized on the novel submission site Everystar.
The Doreiku series’ physical and digital volumes have a total of more than 3.3 million copies in circulation.
Ōishi launched the manga adaptation on Everystar in 2012, and Futabasha published the full series in 10 compiled volumes.
The April issue of Futabasha’s Monthly Action magazine revealed one additional cast member on Saturday for Doreiku The Animation, the television anime adaptation of Shinichi Okada and Hiroto Ōishi’s Dorei-ku: Boku to 23-nin no Dorei (Slave District: 23 Slaves and Me) manga.