Hakuouki is a Japanese visual novel and anime series set during the late Edo period. It follows Chizuru Yukimura, a young woman searching for her missing father, who becomes entangled with the Shinsengumi, a group of elite samurai. The story blends historical events with supernatural elements, as the characters face both human and demonic threats. The series features a cast of characters based on real historical figures, including Hijikata Toshizo and Okita Souji. As Chizuru navigates her relationships with the Shinsengumi, themes of loyalty, love, and sacrifice emerge, making it a compelling narrative for fans of romance and history.