Mad Carnival is the 12th chapter of the Black Cat Manga.
At the Carnival Sven tells Train that he feels like someone is watching them. Train says he doesn't feel it then tells him he's going to take a nap and leaves. While in the Sapidoa Republic Rinslet greets the man who wants to hire her. Back at the carnival Train walk in to an ally to lead out the people following him. The people start to attack him and Train tealizes that their they're being controlled. He throws a smoke bomb and gets Shiki at gun point. He tells Train that Creed wants to meet him.