"Hakuouki: Demon of the Fleeting Blossom" is a visual novel and anime series set in the late Edo period of Japan. 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, particularly the presence of Oni, or demons. The narrative explores themes of loyalty, love, and sacrifice as Chizuru interacts with various members of the Shinsengumi, including Hijikata Toshizo and Okita Souji. Players make choices that influence the story's outcome, leading to multiple endings based on their decisions.