Kuroshitsuji: Book of Circus

A traveling circus arrives in London during the late 1800s, drawing crowds with its elaborate performances. As the group moves from town to town, children go missing in patterns that align with their schedule. A young nobleman, aided by his demon butler, is tasked with uncovering the reason behind the disappearances. Disguised as members of the troupe, they attempt to gather information about the circus's true intentions. This storyline comes after a previous arc involving a cooking competition, which concluded in the first season of the anime.