How NOT to Summon a Demon Lord manga volume 10 features story by Yukiya Murasaki and art by Naoto Fukuda.

With the corrupt Cardinal Council hunting Lumachina, Diablo and his companions have come to Zircon Tower, seeking the help of a Paladin. But a strange sickness runs rampant through the city’s streets, and its citizens are suffering. What dark presence has its grip on this frontier town?!