Natsume is a Japanese woman who acts as both a representative of Canaan's employer and her informant. She is calm and punctual, as attested by the way she interacts with Canaan despite initially finding the latter's single-mindedness for avenging Siam's death very much annoying. She is very manipulative and cares little for the people she employs. She is an accquaintance of Santana whom she dislikes and usually gives him advice to treat Hakkō well.