The world was once populated with monsters. Over time, all that is left in our modern world are the few human-passing monsters that primarily reside in remote areas of the world- such as the island of Kamishima. As the human population grows, and increasingly encroaches into monster-territory, monsters must learn to assimilate the appearance and behavior of humans in order to survive.
Dez is a half-human, half-oni (ogre) teenage girl, who lived in seclusion until now, and must not only make sense of the world she lives in, but also the duality of her nature.