Dan is part of the Investigation Division Unit 1 and the son of a former police superintendent General, Takashi Dan. His big hobby is pottery which is shown pretty often, but he is not very talented. His eyes tend to twitch whenever he learns about the actions of criminals. He have a wife that he really love so much. He would do anything as long as she's with him. He's obsessed with her. He's possessive of her. He want her to be his. She's his everything. He wants her for himself.