GrimGrimoire is a fantasy real time strategy, co-developed by Nippon Ichi Software and Vanillaware, in where players will take on the role of Lillet Blan, a young magician who is admitted to a prestigious yet mystical magic school; however, on the 5th day of school, everyone mysteriously vanishes. Lillet, awakens the next day to find out she is once again living out the first day of school; however, her memories from the previous days are intact, giving her the opportunity to solve the mysteries behind the disappearances and prevent the tragedy from occurring.