Akari is a young and smart prodigy detective. He became a detective at 16 and swiftly rose through the ranks, gaining recognition across Hokkaido to Fukuoka for his ability to solve seemingly impossible cases. The agency entrusts Akari with a case that has remained unsolved for 6 years. Despite the efforts of top-ranked detectives, they haven’t been unable to shine light on it. Some are too frightened, as any detective who attempted to investigate the case vanished without a trace. Only one detective managed to escape the grasp of it so will Akari be the one to solve this enigmatic case?