The story follows Satan who, while attempting to conquer the world of Ente Isla, is confronted by the hero Emilia and forced to retreat through a gate that transports him to modern-day Tokyo, Japan.

In order to survive and find a way to return to Ente Isla, Satan adopts the name Sadao Maou and starts working part-time at the fast food restaurant MgRonald's, a parody of McDonald's.

A 13-episode anime adaptation produced by White Fox and directed by Naoto Hosoda aired from April to June 2013.

After the hero Emilia and her companions kill Malacoda and Adramelech and confront him, he and Alciel flee through a gate to modern-day Tokyo, Japan.

In order to survive until he can find a way to return to Ente Isla, Satan takes on the identity of Sadao Maou and begins working part-time at the fast food restaurant MgRonald's, with Alciel serving as housekeeper.

[12] The final main novel was initially scheduled to be published on July 10, 2020, but was delayed to August 7, 2020, as a result of the effects caused by COVID-19.

), written by Satoshi Wagahara and illustrated by Kurone Mishima, began serialization in the July 2012 issue of ASCII Media Works' Dengeki Maoh magazine.

(はたらく魔王さまのメシ！), illustrated by Oji Sadō, began serialization on Kadokawa Corporation's Comic Walker website on August 28, 2019.

[125] A 13-episode anime television series adaptation of The Devil Is a Part-Timer!, produced by White Fox and directed by Naoto Hosoda,[126] aired between April 4 and June 27, 2013.

The anime has Masahiro Yokotani as the script supervisor and Atsushi Ikariya adapts 029's characters' designs.

"Moon Flower"), "Star Chart" (スターチャート, Sutā Chāto), and "Tsumabiku Hitori" (ツマビクヒトリ), all by Nano Ripe.

[131] A second season was announced at the Kadokawa Light Novel Expo 2020 event in March 2021, with the main cast reprising their roles.