Hakuouki - 1x01 - Season 1, Episode 1- Followmy.tv

Chizuru Yukimura is a young woman who, disguised as a boy, traveled to Kyoto to search for her missing father. However, she is attacked by ronin. Just as one of the ronin is about to find her hiding place, he is attacked by demons. The demons close in on Chizuru, when she is saved by the Shinsengumi. In Shinsengumi headquarters, she explains who she is and why she is there. The Shinsengumi allow her to stay as they are looking for her father as well.