Synopsis

While Katsura and Kyubei clash in a contest for recognition, Shinpachi departs on a mission of his own, discovering that the members of the Shinsengumi have undergone a startling transformation. Sogo Okita, now their leader, commands him, along with Toshiro Hijikata and Sagaru Yamazaki, to assault the Yorozuya. As the trio sets off, Hijikata incapacitates Yamazaki, revealing the change to be a deception. He and Shinpachi soon learn that an invasion of parasitic aliens is responsible for altering