is the 46th NHK Taiga drama television series that began on January 7, 2007. It was aired throughout 2007, with the last episode aired December 16, 2007. Its official English title is The Trusted Confidant. The story, to a large extent, was an adaptation of Yasushi Inoue's 1959 historical novel of the same title (published in English under the title The Samurai Banner of Furin Kazan). The four characters of the title, from left to right are wind, woods, fire, and mountain. The title is a reference to the war banner used by Takeda Shingen, which in turn was taken from Sun Tzu's The Art of War. It means "Swift as the Wind, Silent as a Forest, Fierce as Fire and Immovable as a Mountain." Plot Set in the Sengoku period, it depicts the life of Yamamoto Kansuke who is known as one of Takeda Shingen's renowned strategists. Production Production Credits Director – Kazuhiko Shimizu Screenwriter – Sumio Ōmori Based on the novel by – Yasushi Inoue Narrator – Sachiko Kagami Music – Akira Senju Titling – Kōji Kakinuma Historical research – Shunroku Shibatsuji Action director – Kunishirō Hayashi Architectural research – Sei Hirai Clothing research – Kiyoko Koizumi Production coordinator – Hisaaki Wakaizumi Starring Yamamoto family Yamamoto Kansuke: Masaaki Uchino Mitsu: Shihori Kanjiya Ritsu: Aki Maeda Kuzukasa village Kawaramura Denbei: Yoshiki Arizono Hazuki: Juri Manase Kuzukasa Takichi: Jiyuu Arima Okuma: Aoi Asada Yazaki Heizō: Ryuta Satō Hisa: Asami Mizukawa Takeda family Takeda Shingen: Ichikawa Kamejirō young Shingen and Suwa Katsuyori: Sōsuke Ikematsu Princess Yū: Yuki Shibamoto Lady Sanjō: Chizuru Ikewaki Princess Ogoto: Mahiru Konno Takeda Nobutora: Tatsuya Nakadai Lady Ooi: Jun Fubuki Takeda Nobushige: Noritoshi Kashiwa Takeda Nobukado: Toshinobu Matsuo Nene: Sachiko Sakurai Takeda Yoshinobu: Ryo Kimura Takeda Shingen's vassals Itagaki Nobukata: Sonny Chiba Amari Torayasu: Raita Ryu Obu Toramasa: Akio Kaneda Morozumi Torasada: Takeshi Katō Oyamada Nobuari: Seiichi Tanabe Baba Nobuharu: Kazuya Takahashi Hara Toratane: Kai Shishido Komai Masatake: Issei Takahashi Kosaka Masanobu: Koutaro Tanaka Yamagata Masakage: Yasuyuki Maekawa Akiyama Nobutomo: Hidekazu Ichinose Sanada Yukitaka: Kuranosuke Sasaki Shinome: Misa Shimizu Sanada Gengorō: Kaito Kobayashi Aiki Ichibe: Yoshimasa Kondō Akabe Shimotsuke: Susumu Terajima Princess Miru: Yōko Maki Shima: Akemi Omori Hagino: Miyoko Asada Kinu: Moeko Ezawa Uesugi clan Uesugi Kenshin: Gackt Usami Sadamitsu: Ken Ogata Naoe Sanetsuna: Tokuma Nishioka Kakizaki Kageie: Kenichi Kaneda Honjō Saneyori: Gen Kimura Ōkuma Tomohide: Gorō Ōhashi Momo: Naomi Nishida Nami: Fusako Urabe Uesugi Norimasa: