Joran The Princess of Snow and Blood

In the alternate history Japan of Joran, which takes place in the 64th year of the Meiji era (1931 A.D.), the shogun Tokugawa Yoshinobu retained control over Japan rather than ceding it to a prime minister. Within its own borders, the country of Japan discovered the "Dragon Vein," a distinctive energy source that enabled Japan to significantly accelerate its technological development throughout the Edo period. Despite this unanticipated wealth, the government is under attack from the "Kuchinawa" insurgency, which despises the Tokugawa regime's isolationist policies and seeks to destroy the Shogunate. In response, the Tokugawa administration established "Nue," a covert police force with the mission of eradicating Kuchinawa. Sawa Yukimura becomes an orphan after Kuchinawa kills her family in order to harvest some of their blue blood, which has the power to turn people into "Changelings," demonic creatures who resemble animals. She reluctantly agrees to work as an assassin for Nue in the hopes of exacting revenge on the people who killed her family.