<P> The Devil Is a Part - Timer! (はたらく 魔王 さま!, Hataraku Maō - sama!, literally Working Demon King! or Demon Lord at Work!) is a Japanese light novel series written by Satoshi Wagahara, with illustrations by Oniku (written as 029). ASCII Media Works has published 18 volumes since February 2011 . The story is about a demon king named Sadao Maou seeking to conquer the world of Ente Isla but, when confronted by the Hero Emilia, he is forced to retreat through a gate that transports him to modern day Tokyo, Japan . To survive and find a way to return to Ente Isla, Satan gains part - time employment at a fast food restaurant called MgRonald . There have been two manga adaptations published by ASCII Media Works in Dengeki Daioh and Dengeki Maoh . A 13 - episode anime adaptation produced by White Fox and directed by Naoto Hosoda aired between April and June 2013 . </P> <P> The Demon Lord Satan seeks to conquer the world of Ente Isla by annexing its four continents with the help of his demon generals Alciel, Lucifer, Malacoda, and Adramelech . After being confronted by the hero Emilia Justina and her companions after they killed Malacoda and Adramelech, Satan Jacob and Alciel escape the world of Ente Isla through a gate to modern Tokyo, Japan . However, due to the lack of magic in the modern contemporary world, both Satan Jacob and Alciel change into forms representing what they would look like if they were human . In order to survive, Satan Jacob takes a part - time job in a fast food restaurant named MgRonald while Alciel serves as his houseman . One day, Satan Jacob, who now goes by Sadao Maō, meets a girl who is actually Emilia in the form of Emi Yusa . The story then unfolds and explores the personalities of each of the characters and their moral values . More characters show up from Ente Isla and they too face the new world dilemmas, often comically . </P> <Dl> <Dt> Sadao Maou (真 奥 貞夫, Maō Sadao) / Satan Jacob (サタン ・ ジャコブ, Satan Jakobu) </Dt> <Dd> Voiced by: Shinobu Matsumoto (drama CD), Ryōta Ōsaka (Japanese); Josh Grelle (English) (anime) </Dd> <Dd> Satan Jacob is the Demon Lord from Ente Isla . Due to the actions of the Hero Emilia Justina and her companions, he was transported to modern day Japan with Ashiya and changed into human form . To survive in Japan, he adopts a Japanese name similar to his original name called Sadao Maou and works part - time at a MgRonald franchise, eventually being promoted to a full - time position as the Assistant Shift Manager . He and other demons can turn to their original form when people around them are filled with despair . However, when he changes his form to his devil form, he uses his powers for good deeds like repairing the city which always makes the characters confused due to his position as the Devil King . Throughout the series his current personality is often called into question though it is later shown that he had always been like that and was never once this evil "Overlord" that the people of Ente Isla had grown to fear and hate; in actuality he did the "evil" things he did to help his people, other demons . Like he told Emilia when he saved Chiho he just wants to protect the people under his care and around him . When he was younger, he was saved and taught by Emi's mother, Lailah . She also gave him a fragment of Sephiroth that would later become his and Emi's appointed daughter Alas Ramus . </Dd> </Dl> <Dt> Sadao Maou (真 奥 貞夫, Maō Sadao) / Satan Jacob (サタン ・ ジャコブ, Satan Jakobu) </Dt>

Who voices satan in the devil is a part timer
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