[Machine Translation] The time is Kyoto at the end of the Edo period. A man named Kamiya Seizaburo volunteers to join the Mibu Roshigumi, later known as the Shinsengumi. In fact, this Seizaburo is a woman...? Bakumatsu Seishun Graffiti! The Shogunate dispatches an important person to Hiroshima to investigate the movements of Choshu. The Shinsengumi also receives a special order, and Kondo, Ito, and others accompany them. Hijikata, who is in charge of the Shinsengumi's absence, receives top-secret information about an assassin. Hijikata orders Sei to go undercover, but the mission is too dangerous for a girl...! An important figure essential to the history of the end of the Tokugawa Shogunate finally appears!