Kuroshitsuji

In the year 2020, a young woman named Earl Kiyoharu Genpou returns to Japan, supposedly dead, to take the reins of her family's prestigious company, Funtom Toy Company, with the help of her demon butler, Sebastian Michaelis. Kiyoharu, a Queen's Watchdog, is on a mission to avenge her parents' murder, and her investigation leads her to an underground club where a powerful new drug, Necrosis, is being peddled. As the danger escalates, Kiyoharu and Sebastian must work together to disarm a bomb and bring the mastermind behind the plot to justice.