The Luxury Liner Arc is the sixth arc of the Kuroshitsuji manga. It is a major conflict that depicts Ciel Phantomhive and Sebastian Michaelis investigating the matters of the illegal human experiments. The conflict ended when the Undertaker revealed himself as a Grim Reaper and the creator of the Bizarre Dolls due to manipulation of their cinematic records. He left his chain of lockets with Ciel and departed from the ship.