A good friend of Kagura lets Yorozuya and Tsukuyo get inside the castle after learning that the promise that Suzuran made is the previous Shougun.
After a while of discussing on how to infiltrate the Shogun's castle to meet the previous Shogun, Kagura found a way to get in by asking Soyo-hime, who was Kagura's friend. As Soyo-hime led everyone into the castle, the group ran into Isaburo. He intended to tell them to go home, but changed his mind, knowing that one of them is Gintoki. Despite Gintoki's and Tsukuyo's want to see the previous Shogun, they were being watched by the princess's