Ciel investigates a prestigious school where pupils, including royalty, go missing. He enrolls undercover while Sebastian joins as a housemaster to uncover the sinister truth.Ciel investigates a prestigious school where pupils, including royalty, go missing. He enrolls undercover while Sebastian joins as a housemaster to uncover the sinister truth.Ciel investigates a prestigious school where pupils, including royalty, go missing. He enrolls undercover while Sebastian joins as a housemaster to uncover the sinister truth.