Okita Sōji
is a Japanese manga series written and illustrated by Taeko Watanabe. Set in the period, the story follows Tominaga Sei, a young girl who poses as a boy named Kamiya Seizaburō so she can join the Mibu-Roshi (Special Police; later known as the Shinsengumi). She befriends her sensei, Okita Sōji, who discovers her secret.