The Devil is a Part-Timer Novel Volume 19 is written by Satoshi Wagahara and illustrated by 029 (Oniku).

Back in Chiho's hometown, it's harvest season and there's not enough hands! With his part-time job closed for renovations, Maou decides to go help out and brings the the willing Ashiya as well as the unwilling Urushibara. Meanwhile, Suzuno completely misunderstands the situation and drags Emi along to chase the boys all the way to Nagano. Even in the countryside, the demon king and the hero are bound to bring trouble with them wherever they go...