The Devil Is a Part-Timer Novel Volume 11 is written by Satoshi Wagahara and illustrated by 029 (Oniku).

With the help of Maou and co., Emi is able to return safely from Ente Isla, but she's been gone so long that her job is in jeopardy! To add insult to injury, she's been charged a 350,000 yen rescue fee! Because her pride won't allow her to be in debt to the devil, she resolves to find a new part-time job. Meanwhile, something strange has awakened within Urushibara...