1931 is the year. Prince Tokugawa Yoshinobu is 94 years old and has complete control over Japan. Remnants of the Meiji era's culture can be seen around the city, but scientific technology and Japanese mysticism Onmyodo are also developing. The fall of the regime is being planned by a dissident group called Kuchinawa. Nue is the government's secret executioner group. Sawa Yukimura, who works for this organization, suffered from an early age at the hands of the Kuchinawa boss. She dedicated her life to avenge the death of her family.