The Devil Is a Part-Timer! (which is known in Japan as Hataraku Mao-sama) is based on a Japanese light novel series written by Satoshi Wagahara and illustrated by Oniku.

The prologue of the series explains that in another dimension, the Devil King Satan has almost conquered the world, but is stopped by Hero Emilia. Satan, along with Demon General Alsiel, end up drifting into another world: modern day Japan. Specifically, they both end up in Tokyo. They also discover that they have taken on human bodies and that their ability to perform magic is limited. While Satan still retains some of his magic, Alsiel's is gone.

Through using some hypnotism, Satan learns about Earth and about some of the various things that he and Alsiel will need to do in order to survive. Satan takes on the identity of Sadao Mao, while Alsiel takes on the identity of Shiro Ashiya. They are able to get identification, open a bank account, and rent a house.

Satan takes on a job at MgRonalds in order to earn money for the two of them to live on, where he works his way up to an A level position by the end of the first episode. At the very end of the first episode, Satan discovers that Hero Emilia has also ended up in Tokyo, and is in the form of a human female.

While the prologue in the first episode is a little on the violent side, with some blood shown during a battle, the majority of the episode is actually light-hearted and comedic. I found myself either chuckling or laughing out loud at Satan and Alsiel as they try to figure out how things work in modern day Tokyo. It also helps that Satan and Alsiel make for a good pairing: Satan is more or less the "straight man" of the two, while Alsiel helps to provide a bit of the humor for the series.

I really enjoyed watching the first episode of The Devil Is a Part-Timer!, and it looks like this series has the potential to continue to be just as good as it continues. I'm really hoping that the series will ultimately be able to live up to this potential.

From what I've seen of the series at this point, I would personally recommend The Devil Is a Part-Timer! to anime viewers who are 13 or 14 years of age and older.

Title	Episodes	Release Year(s)	Director	Studio	N.A. Licensor
The Devil Is a Part-Timer!	12	2013	Naoto Hosoda	White Fox	FUNimation Entertainment