Memories of Murder (Kuroshitsuji/Black Butler fanfic) (Sebaciel)

Sebastian Michaelis is a student attending an international school in Tokyo, Japan. On his first day he finds the school is haunted by the ghost of a boy who was murdered there, Ciel Phantomhive. Once Ciel knows Sebastian can see him, he forces him into solving the mystery of his death. As the investigation proceeds...