Exorcism Agency tasks players with infiltrating haunted areas to capture supernatural creatures using a variety of mystical techniques. The human world has fallen under the control of these spirits, creating a hellish landscape for the living. In these environments, Exorcists not only confront phantoms, but also gain the opportunity to have intimate contact with certain ghost girls. Success in these encounters leads to the cultivation of these spectral companions, allowing players to delve deeper into their secrets and hidden natures.