Joker: Yurusarezaru Sōsakan (Japanese: ジョーカー 許されざる捜査官, Joker: Unforgiven Investigator) is a 2010 Japanese crime drama television series developed by Hideaki Tatematsu and Masaru Ōta from Fuji TV and Kyodo Television respectively. It stars Masato Sakai in his first leading role as mild-mannered detective Date Kazuyoshi of the , Investigation Division 1. Starring alongside Sakai is Ryō Nishikido and Anne Watanabe, the latter using the mononym "Anne".