Takasugi and Shinsaku spot the steam locomotive that carries weapons and ammunition to Susanoo Castle. They follow it to Osaka for reconnaissance purposes, but not long after they arrive they are spotted by Okita Soji, captain of the first division of the Shinsengumi. They try to make their escape by hopping on the train, but another enemy lie in waiting: Shinsengumi Vice-Commander Hijikata Toshizo. Hijikata coldly shoves Takasugi from the train, while Katsura is left behind in a trap. For Takasugi and Katsura, who have been together since they were young, this is a crisis of epic proportions--will they be able to overcome it?