Hiroshi Kamiya is a Japanese voice actor, singer and narrator affiliated with Aoni Production. He is best known for the voice of Levi Ackerman in Attack on Titan, Koyomi Araragi in the Monogatari series, Trafalgar Law in One Piece, Mephisto Pheles in Blue Exorcist, Izaya Orihara in Durarara! !, Shinji Matō in the Fate franchise, Takashi Natsume in Natsume Yūjin Chō, Choromatsu in Mr.