Exorcists

"Lord Muraga, those weird louts are here again."
"Foolish demons, we'll send 'em crawling back to hell! To arms, Oldoa!"
"Yes, Your Fierceness!"
In some regions, stemming from a fear of monsters with unique traits such as commanding spirits or draining the blood of their victims to gain power, there is a long-standing custom of donning the appearance of such monsters at festivals in the hope of being bestowed with beyond- human power.
In recent years, however, during a certain season in cities where this custom no longer thrives, there are reports of demons dressed in curious attire parading through the streets as if they own them, reveling all night long and causing general chaos.
It is said that people in the regions that still practice the old customs are now called upon to head to the cities and scare the demons back into hiding.