Those Years I Spent Hunting Demons in the City

People say that animals aren't allowed to become spirits after the founding of the nation. But what should you do when an animal really does gain humanlike intelligence? Amid the bustle of the city, a group of unusual beings live on this land, wearing human appearances and living just like people. By chance, the protagonist joins the Animal Management Bureau, opening the door to a strange new world and uncovering its bizarre wonders.