Rei-Jin-G-Lu-P is a horror game based on the "Werewolf" (or "Mafia") game concept where the werewolf hides among a group of people who must discover his or her identity. The main character, Haruaki Fusaishi, gets lost and arrives in Yasumizu Village, and every time he dies he wakes up again at the same point in time. Players solve the mysteries behind strange events and tragedies regarding the "Underworld Banquet" murder ritual and a hidden werewolf. The game has multiple endings.