After suffering great wounds from the Aburanokōji Incident, the Shinsengumi steeled their resolve to remain loyal to the shogun, Tokugawa Yoshinobu. Amidst this, the Imperial Court declared the end of the Tokugawa shogunate, and Yoshinobu departed for Osaka. In preparation for the coming battles, the Shinsengumi relocated their headquarters to the Fushimi Magistrate's Office. The third year of Keiō—an era of upheaval at the end of the shogunate. Shinsengumi member Ichimura Tetsunosuke, while holding thoughts of the girl Sayo, with whom he was once close, resolves to share the fate of the Shinsengumi alongside his brother Tatsunosuke, the unit's physician and his close friend Yamazaki Susumu, and as the page of Vice Commander Hijikata Toshizō. However...