Sakamoto and Izo break into Susanoo Castle and confront Shinsengumi members. Katsura, who received Izo's blow, immediately let Kondo escape and let it pass. After Izo leaves, Okita reveals Katsura's true identity, and a serious match begins between the two. On the other hand, Takasugi meets Mikado, who is also imprisoned in Susanoo Castle. Unaware of his true identity, Takasugi single-mindedly tries to rescue him from the prison, but the emperor gives him directions to the room where Mugensai is.