[Machine Translation] The "Ikedaya Incident" finally breaks out! What is the fate of Saito and Maru? Maru, a black cat who has been left alone in Japan since his parents died, meets a man with the same eyes as his father, Hajime Saito, the leader of the Shinsengumi's third squad, and is eventually adopted by him! One day, Maru is taken to Shimabara by Yamanami, the deputy chief of the Shinsengumi. Maru is almost attacked by a suspicious man, but is rescued by Yamazaki Shojo, the inspector of the Shinsengumi. The captured man had a terrible plan to set fire to the city of Kyoto and take advantage of the chaos to kidnap the emperor! Saito and Maru also happen to meet Toshimaro Yoshida, the ringleader of the plot, and somehow the two become cat friends...!