Hirokazu Shiba (芝 博一, Shiba Hirokazu; 21 April 1950 – 15 November 2025) was a Japanese politician of the Democratic…Hirokazu Shiba (芝 博一, Shiba Hirokazu; 21 April 1950 – 15 November 2025) was a Japanese politician of the Democratic Party of Japan, who was a member of the House of Councillors in the Diet, the country's national legislature.
Yoichi Miyazawa (宮沢 洋一, Miyazawa Yōichi; born 21 April 1950) is a Japanese politician who serves as Chairman of the Tax…Yoichi Miyazawa (宮沢 洋一, Miyazawa Yōichi; born 21 April 1950) is a Japanese politician who serves as Chairman of the Tax Research Commission in the Liberal Democratic Party since 2021 and from 2015 to 2019. He also served as Minister of Economy, Trade and Industry from 2014 to 2015. He has served as a member of the House of Councillors since 2010 and was previously a House of Representatives from 2000 to 2009. Miyazawa is a nephew of Kiichi Miyazawa and a cousin of Fumio Kishida. He was an official in the Ministry of Finance before entering politics.
Yukihisa Fujita (藤田 幸久, Fujita Yukihisa; born 19 April 1950) is a Japanese politician. He is a Visiting Research Fellow…Yukihisa Fujita (藤田 幸久, Fujita Yukihisa; born 19 April 1950) is a Japanese politician. He is a Visiting Research Fellow of the Department of Politics and International Relations at the University of Oxford, Chairman of the International IC (Initiatives of Change) Association of Japan and a Visiting Professor, Gifu Women's University. He was a member of the House of Councillors, the upper house from the Ibaraki constituency and the House of Representatives, the lower house from the Tokyo constituency of Japan's parliament. In the House of Councillors he is a former Chair of the Committee on Financial Affairs, Chairman of the Special Committee on North Korea Abduction Issue, and a Chairman of the Committee on Fundamental National Policies. He was a Director of the Committee on Foreign Affairs and Defence. He was a Vice Minister of Finance. He was a Shadow Foreign Minister and a Director-General of the DPJ's International Department. Prior to political life, he was a Director of the Association Aid and Relief (AAR), the first Japanese NGO to help refugees and an Executive Director of the International MRA Association of Japan. He was a lecturer at Yokohama National University.
Tetsuhisa Matsuzaki (松崎 哲久, Matsuzaki Tetsuhisa; born 14 April 1950 in Tokyo) is a former Japanese politician of the…Tetsuhisa Matsuzaki (松崎 哲久, Matsuzaki Tetsuhisa; born 14 April 1950 in Tokyo) is a former Japanese politician of the Democratic Party of Japan, who served as a member of the House of Representatives in the Diet (national legislature), representing the Saitama No. 10 District. Matsuzaki studied law at the University of Tokyo and received an MA from Harvard University in the USA. He was elected for the first time in 2003.
Jun Matsumoto (松本 純, Matsumoto Jun; August 11, 1950 – March 19, 2026) was a Japanese politician of the Liberal…Jun Matsumoto (松本 純, Matsumoto Jun; August 11, 1950 – March 19, 2026) was a Japanese politician of the Liberal Democratic Party, who served as a member of the House of Representatives in the Diet (national legislature).
Ryo Shuhama (主浜 了, Shuhama Ryō; born 2 April 1950) is a Japanese politician of the Democratic Party of Japan, a member…Ryo Shuhama (主浜 了, Shuhama Ryō; born 2 April 1950) is a Japanese politician of the Democratic Party of Japan, a member of the House of Councillors in the Diet (national legislature).
Katsuko Nishimoto (西本 勝子, Nishimoto Katsuko; 1 April 1950 – 2 February 2025) was a Japanese politician of the Liberal…Katsuko Nishimoto (西本 勝子, Nishimoto Katsuko; 1 April 1950 – 2 February 2025) was a Japanese politician of the Liberal Democratic Party (LDP), who was a member of the House of Representatives in the Diet (national legislature).
Shunichi Yamaguchi (山口 俊一, Yamaguchi Shun'ichi; born 28 February 1950) is a Japanese politician of the Liberal…Shunichi Yamaguchi (山口 俊一, Yamaguchi Shun'ichi; born 28 February 1950) is a Japanese politician of the Liberal Democratic Party, a member of the House of Representatives in the Diet (national legislature).
Yuji Fujii (藤井 勇治, Fujii Yūji; born 27 February 1950) is a Japanese politician of the Liberal Democratic Party, a…Yuji Fujii (藤井 勇治, Fujii Yūji; born 27 February 1950) is a Japanese politician of the Liberal Democratic Party, a member of the House of Representatives in the Diet (national legislature). A native of Torahime, Shiga and graduate of Ryukoku University, he ran unsuccessfully for the assembly of Shiga Prefecture. He was elected to the House of Representatives for the first time in 2005, and represents the 2nd District of Shiga prefecture.
Junichiro Yasui (安井 潤一郎, Yasui Jun'ichirō; born 10 February 1950) is a Japanese politician of the Liberal Democratic…Junichiro Yasui (安井 潤一郎, Yasui Jun'ichirō; born 10 February 1950) is a Japanese politician of the Liberal Democratic Party, a member of the House of Representatives in the Diet (national legislature). A native of Shinjuku, Tokyo and dropout of Waseda University, he was elected to the House of Representatives for the first time in 2005.
Ryu Shionoya (塩谷 立, Shionoya Ryū; born 18 February 1950) is a former Japanese politician of the Liberal Democratic…Ryu Shionoya (塩谷 立, Shionoya Ryū; born 18 February 1950) is a former Japanese politician of the Liberal Democratic Party, who served as a member of the House of Representatives in the Diet (national legislature) and who was the former Minister of Education, Science and Technology.
Takao Watanabe (渡辺 孝男, Watanabe Takao; born 1950) is a Japanese politician of the New Komeito Party, a member of the…Takao Watanabe (渡辺 孝男, Watanabe Takao; born 1950) is a Japanese politician of the New Komeito Party, a member of the House of Councillors in the Diet (national legislature). A native of Ishioka, Ibaraki and graduate of Tohoku University, he was elected to the House of Councillors for the first time in 1995.
Toshiaki Endo (遠藤 利明, Endō Toshiaki; born 1950) is a Japanese politician of the Liberal Democratic Party, a member of…Toshiaki Endo (遠藤 利明, Endō Toshiaki; born 1950) is a Japanese politician of the Liberal Democratic Party, a member of the House of Representatives in the Diet (national legislature).
Yoshitaka Sakurada (桜田 義孝, Sakurada Yoshitaka; born 20 December 1949) is a former Japanese politician of the Liberal…Yoshitaka Sakurada (桜田 義孝, Sakurada Yoshitaka; born 20 December 1949) is a former Japanese politician of the Liberal Democratic Party who served as a member of the House of Representatives in the Diet of Japan. He formerly served as Minister of State for the Tokyo Olympic and Paralympic Games in the Fourth Abe Cabinet.
Kensaku Morita (森田 健作, Morita Kensaku; born 16 December 1949; birth name: 鈴木 栄治 Eiji Suzuki) is a retired Japanese…Kensaku Morita (森田 健作, Morita Kensaku; born 16 December 1949; birth name: 鈴木 栄治 Eiji Suzuki) is a retired Japanese politician, actor and singer. He was elected to three terms as governor of Chiba Prefecture, serving from April 2009 to April 2021.
Akira Gunji (郡司 彰, Gunji Akira; born 11 December 1949) is a Japanese politician of the Constitutional Democratic Party…Akira Gunji (郡司 彰, Gunji Akira; born 11 December 1949) is a Japanese politician of the Constitutional Democratic Party of Japan and formerly a member of the House of Councillors in the Diet (national legislature). He served as Vice President of the House of Councillors from 2016 to 2019.
Mitsuhide Iwaki (岩城 光英, Iwaki Mitsuhide; born 4 December 1949) is a Japanese politician of the Liberal Democratic…Mitsuhide Iwaki (岩城 光英, Iwaki Mitsuhide; born 4 December 1949) is a Japanese politician of the Liberal Democratic Party, a member of the House of Councillors in the National Diet (national legislature). A native of Iwaki, Fukushima and graduate of Sophia University with a B.L., he worked at Suntory and served in the city assembly of Iwaki for two terms since 1980, in the assembly of Fukushima Prefecture for two terms from 1986 and as mayor of Iwaki for two terms from 1990. He was elected to the House of Councillors for the first time in 1998. Iwaki was named Minister of Justice in Shinzo Abe cabinet on 7 October 2015.
Shuji Ikeguchi (池口 修次, Ikeguchi Shūji; born November 10, 1949) is a Japanese politician of the Democratic Party of…Shuji Ikeguchi (池口 修次, Ikeguchi Shūji; born November 10, 1949) is a Japanese politician of the Democratic Party of Japan, a member of the House of Councillors in the Diet (national legislature). A native of Kiso, Nagano and graduate of Waseda University, he joined Honda in 1972 and was elected to the House of Councillors for the first time in 2001.
Osamu Fujimura (藤村 修, Fujimura Osamu; born 3 November 1949) is a former Japanese politician of the Democratic Party of…Osamu Fujimura (藤村 修, Fujimura Osamu; born 3 November 1949) is a former Japanese politician of the Democratic Party of Japan, who served as Chief Cabinet Secretary under Prime Minister Yoshihiko Noda from 2011 to 2012. He was a member of the House of Representatives from 1993 to 2012.
Fukuyo Nakamori (中森 福代, Nakamori Fukuyo; born 28 October 1949) is a Japanese politician serving in the House of…Fukuyo Nakamori (中森 福代, Nakamori Fukuyo; born 28 October 1949) is a Japanese politician serving in the House of Representatives in the Diet (national legislature) as a member of the Liberal Democratic Party. A native of Arakawa, Tokyo and high school graduate she was elected to the Diet for the first time in September 2005 after unsuccessfully running for mayor of Saitama, Saitama in May 2005.
Nobuhiro Omiya (近江屋 信広, Ōmiya Nobuhiro; born 15 October 1949) is a Japanese politician of the Liberal Democratic Party…Nobuhiro Omiya (近江屋 信広, Ōmiya Nobuhiro; born 15 October 1949) is a Japanese politician of the Liberal Democratic Party, a member of the House of Representatives in the Diet (national legislature). A native of Kitaakita District, Akita and graduate of Chuo University, he was elected to the House of Representatives for the first time in 2005.
Katsutoshi Kaneda (金田 勝年, Kaneda Katsutoshi) is a Japanese politician who served as the Minister of Justice from 2016…Katsutoshi Kaneda (金田 勝年, Kaneda Katsutoshi) is a Japanese politician who served as the Minister of Justice from 2016 to 2017. He studied at and graduated from Hitotsubashi University.
Toshifumi Kosehira (小斉平 敏文, Kosehira Toshifumi; September 30, 1949 – July 9, 2015) was a Japanese politician and a…Toshifumi Kosehira (小斉平 敏文, Kosehira Toshifumi; September 30, 1949 – July 9, 2015) was a Japanese politician and a member of the National Diet.
Tetsuo Morimoto (森本 哲生, Morimoto Tetsuo; born 29 September 1949) is a former Japanese politician of the Democratic…Tetsuo Morimoto (森本 哲生, Morimoto Tetsuo; born 29 September 1949) is a former Japanese politician of the Democratic Party of Japan, who served as a member of the House of Representatives in the Diet (national legislature) from 2005 to 2012.
Makiko Fujino (藤野 真紀子, Fujino Makiko; born 15 September 1949) is a Japanese politician of the Liberal Democratic Party…Makiko Fujino (藤野 真紀子, Fujino Makiko; born 15 September 1949) is a Japanese politician of the Liberal Democratic Party, a member of the House of Representatives in the Diet (national legislature), representing the 4th District of Aichi Prefecture. A native of Tokyo and graduate of the University of the Sacred Heart, she was elected to the House of Representatives for the first time in 2005. Her husband is Kimitaka Fujino, a member of the House of Councilors in the Diet.
Akira Amari (甘利 明, Amari Akira; born 27 August 1949) is a Japanese politician of the Liberal Democratic Party (LDP) and…Akira Amari (甘利 明, Amari Akira; born 27 August 1949) is a Japanese politician of the Liberal Democratic Party (LDP) and a former member of the lower house.
Kazuyuki Yukawa (Japanese: 湯川一行 Yukawa Kazuyuki; 15 August 1949 – 4 April 2025) was a Japanese politician. A member of…Kazuyuki Yukawa (Japanese: 湯川一行 Yukawa Kazuyuki; 15 August 1949 – 4 April 2025) was a Japanese politician. A member of the Liberal Democratic Party, he served in the House of Representatives from 2012 to 2014. Yukawa died of aspiration pneumonia in Izumi, on 4 April 2025, at the age of 75.
Takashi Yamamoto (山本 孝史, Yamamoto Takashi; 7 July 1949 – 22 December 2007) was a Japanese politician of the Democratic…Takashi Yamamoto (山本 孝史, Yamamoto Takashi; 7 July 1949 – 22 December 2007) was a Japanese politician of the Democratic Party of Japan, a member of the House of Councillors in the Diet (national legislature).
Midori Ishii (石井 みどり, Ishii Midori; born June 23, 1949) is a Japanese politician of the Liberal Democratic Party, a…Midori Ishii (石井 みどり, Ishii Midori; born June 23, 1949) is a Japanese politician of the Liberal Democratic Party, a member of the House of Councillors in the Diet (national legislature). A graduate of Tsurumi University, she was elected for the first time in 2007.
Hiromi Yoshida (吉田 博美, Yoshida Hiromi; 17 June 1949 – 26 October 2019) was a Japanese politician of the Liberal…Hiromi Yoshida (吉田 博美, Yoshida Hiromi; 17 June 1949 – 26 October 2019) was a Japanese politician of the Liberal Democratic Party, a member of the House of Councillors in the Diet (national legislature). A graduate of Waseda University, he was elected to the House of Councillors for the first time in 2001 after serving in the assembly of Nagano Prefecture for five terms since 1983.
Masayoshi Namiki (並木 正芳, Namiki Masayoshi; born 19 May 1949) is a former Japanese politician of the Liberal Democratic…Masayoshi Namiki (並木 正芳, Namiki Masayoshi; born 19 May 1949) is a former Japanese politician of the Liberal Democratic Party (LDP), who served as a member of the House of Representatives in the Diet (national legislature). A native of Tokorozawa, Saitama and graduate of Saitama University, he had served in the assembly of Tokorozawa for three terms since 1979 and in the assembly of Saitama Prefecture for two terms since 1991. He was elected to the House of Representatives for the first time in 1996 as a member of the New Frontier Party. After losing his seat in 2000, he also lost the election in 2003. He was re-elected in 2005 as a member of the LDP.
Hiroshi Ogawa (小川 洋, Ogawa Hiroshi; 17 May 1949 – 2 November 2021) was a Japanese politician who became the governor of…Hiroshi Ogawa (小川 洋, Ogawa Hiroshi; 17 May 1949 – 2 November 2021) was a Japanese politician who became the governor of Fukuoka Prefecture in 2011. In 2015, he was re-elected for a second term, and for a third term in 2019. In 2021 he resigned to receive cancer treatment and the vice governor Seitaro Hattori was elected to replace him.
Hiroko Uehara (上原 公子, Uehara Hiroko) is a Japanese centre-left politician and policy consultant. From 1999 to 2007, she…Hiroko Uehara (上原 公子, Uehara Hiroko) is a Japanese centre-left politician and policy consultant. From 1999 to 2007, she served for two terms as mayor of Kunitachi City, becoming the first female mayor in Tokyo. Uehara was born in 1949 in Miyazaki City, Miyazaki Prefecture. After attending Miyazaki prefectural Miyazaki-Ōmiya High School (Miyazaki kenritsu Miyazaki Ōmiya kōtō-gakkō), she graduated from the Faculty of Letters of Hōsei University, but subsequently broke off her postgraduate studies. Later, she became the leader of the female consumer-driven local party Tokyo Seikatsusha Network, part of the national citizens' network movement (also known as "representative/deputy/proxy movement", 代理人運動, dairinin undō), and was elected to the assembly of Kunitachi City. In 1999, Uehara won the mayoral election, ending a two-decade streak of conservative/centre-right mayors. After two terms, she did not stand for re-election (the network movement has rules on assembly member rotation and chief executive term limits). With centre-left support including hers, Hiroshi Sekiguchi was elected to succeed her. In the 2007 regular election, she tried to win a seat in the House of Councillors via the Social Democratic Party list in the proportional district; but she received only 108,636 votes nationwide, making her fourth on the SDP list while the party won only two seats in the proportional election. In the 2016 Tokyo gubernatorial election, Uehara ran a support group for centre-left candidate Shuntarō Torigoe.
Yoshiko Tōma (当摩 好子, Tōma Yoshiko; born 26 April 1949) is a Japanese politician from Ōmuta, Fukuoka. Having graduated…Yoshiko Tōma (当摩 好子, Tōma Yoshiko; born 26 April 1949) is a Japanese politician from Ōmuta, Fukuoka. Having graduated from Keio University, Tōma was elected to Tokorozawa City Council in 1979. She ran unsuccessfully for the Tokorozawa mayoral election in 1991 and for the national lower house election in 1996 before she was elected to the Saitama Prefectural Assembly in 1999. Elected as mayor of Tokorozawa in October 2007, Tōma became the first woman to hold that post.
Nozomu Suzuki (Japanese: 鈴木望; 20 April 1949 – 7 June 2024) was a Japanese politician. A member of the Japan Restoration…Nozomu Suzuki (Japanese: 鈴木望; 20 April 1949 – 7 June 2024) was a Japanese politician. A member of the Japan Restoration Party, he served in the House of Representatives from 2012 to 2014. Suzuki died in Hamamatsu on 7 June 2024, at the age of 75.
Yūzan Fujita (藤田 雄山, Fujita Yūzan; April 19, 1949 – December 18, 2015) was a Japanese politician and the governor of…Yūzan Fujita (藤田 雄山, Fujita Yūzan; April 19, 1949 – December 18, 2015) was a Japanese politician and the governor of Hiroshima Prefecture from 1993 to 2009. A native of Minami-ku, Hiroshima and graduate of Keio University, he had served in the House of Councillors in the Diet of Japan since 1989 for one term before being elected governor.
Takayoshi Taniguchi (谷口 隆義, Taniguchi Takayoshi; born 18 April 1949) is a former Japanese politician who served in the…Takayoshi Taniguchi (谷口 隆義, Taniguchi Takayoshi; born 18 April 1949) is a former Japanese politician who served in the House of Representatives in the Diet (national legislature) as a member of the New Komeito Party. A native of Osaka, Osaka and graduate of Osaka Prefecture University he was elected for the first time in 1993.
Kishirō Nakamura (中村 喜四郎, Nakamura Kishirō; born 10 April 1949) is a former Japanese politician who served as a member…Kishirō Nakamura (中村 喜四郎, Nakamura Kishirō; born 10 April 1949) is a former Japanese politician who served as a member of the House of Representatives in the Diet. A native of Sakai in Ibaraki Prefecture and a graduate of Nihon University, he was elected to the House of Representatives for the first time in 1976. After winning 14 elections in a row without a single defeat at the polls, he lost to Keiko Nagaoka in the election of 21 October 2021.
Luiz Hiloshi Nishimori (born 9 April 1949) is a Brazilian politician and farmer. He has spent his political career…Luiz Hiloshi Nishimori (born 9 April 1949) is a Brazilian politician and farmer. He has spent his political career representing Paraná, having served as a state deputy representative from 2005 to 2011 and as federal deputy representative from 2011.
Fumiaki Matsumoto (松本 文明, Matsumoto Fumiaki; born 25 March 1949) is a former Japanese politician of the Liberal…Fumiaki Matsumoto (松本 文明, Matsumoto Fumiaki; born 25 March 1949) is a former Japanese politician of the Liberal Democratic Party, who served as and a member of the House of Representatives in the Diet (national legislature). Matsumoto served as a vice minister for the Cabinet Office between August 2017 and January 2018. He resigned from his post after being recorded in the Diet mocking the gravity of US military helicopter accidents in Okinawa.
Hirofumi Hirano (平野 博文, Hirano Hirofumi; born 19 March 1949) is a Japanese politician of the Constitutional Democratic…Hirofumi Hirano (平野 博文, Hirano Hirofumi; born 19 March 1949) is a Japanese politician of the Constitutional Democratic Party of Japan and a former member of the House of Representatives in the Diet (national legislature). He is a native of Katsuragi, Wakayama and he started working for Panasonic Corporation in 1971 after graduating from Chuo University. He was elected to the House of Representatives for the first time in 1996 as an independent. He was the Chief Cabinet Secretary in the Yukio Hatoyama administration. He represented the 11th District of Osaka Prefecture from 1996 until 2012, and again from 2014 to 2021.
Takahiro Sasaki (佐々木 隆博, Sasaki Takahiro; born 10 March 1949) is a former Japanese politician of the Constitutional…Takahiro Sasaki (佐々木 隆博, Sasaki Takahiro; born 10 March 1949) is a former Japanese politician of the Constitutional Democratic Party of Japan, who served as a member of the House of Representatives in the Diet (national legislature).
Izumi Yoshida (吉田 泉, Yoshida Izumi; born 26 February 1949) is former a Japanese politician of the Constitutional…Izumi Yoshida (吉田 泉, Yoshida Izumi; born 26 February 1949) is former a Japanese politician of the Constitutional Democratic Party who served as a member of the House of Representatives in the Diet (national legislature). A native of Iwaki, Fukushima and graduate of the University of Tokyo, he was elected in 1996 as the mayor of Iwaki. After an unsuccessful run in 2000, he was elected to the House of Representatives for the first time in 2003.
Banri Kaieda (海江田 万里, Kaieda Banri; born 26 February 1949) is a Japanese politician who served as the Vice Speaker of…Banri Kaieda (海江田 万里, Kaieda Banri; born 26 February 1949) is a Japanese politician who served as the Vice Speaker of the House of Representatives of Japan from 2021 to 2024. A member of the House of Representatives of Japan, he also served as the President of the Democratic Party of Japan between 2012 and 2014. He is a former minister in the Kan cabinet.
Toshiyuki Kato (加藤 敏幸, Katō Toshiyuki; born February 16, 1949) is a Japanese politician of the Democratic Party of…Toshiyuki Kato (加藤 敏幸, Katō Toshiyuki; born February 16, 1949) is a Japanese politician of the Democratic Party of Japan, a member of the House of Councillors in the Diet (national legislature). A native of Niihama, Ehime and high school graduate, he was elected for the first time in 2004.
Kazunori Tanaka (田中 和徳, Tanaka Kazunori; born 21 January 1949) is a Japanese politician serving in the House of…Kazunori Tanaka (田中 和徳, Tanaka Kazunori; born 21 January 1949) is a Japanese politician serving in the House of Representatives in the Diet (national legislature) as a member of the Liberal Democratic Party and Minister of Reconstruction. A native of Toyoura District, Yamaguchi and graduate of Hosei University he was elected for the first time in 1996 after serving in local assemblies. Tanaka was general director of the Liberal Democratic Party International bureau in 2015.
Yukiko Sakamoto (坂本 由紀子, Sakamoto Yukiko; born 20 January 1949) is a Japanese politician and bureaucrat from Mishima…Yukiko Sakamoto (坂本 由紀子, Sakamoto Yukiko; born 20 January 1949) is a Japanese politician and bureaucrat from Mishima, Shizuoka. She was the first woman to be appointed vice-governor of Shizuoka Prefecture in 1996 and served one term in the House of Councillors in the National Diet from 2004 until 2009.
Ichirō Kamoshita (鴨下 一郎, Kamoshita Ichirō; born 16 January 1949) is a Japanese politician and doctor, who served as…Ichirō Kamoshita (鴨下 一郎, Kamoshita Ichirō; born 16 January 1949) is a Japanese politician and doctor, who served as Minister of the Environment in Yasuo Fukuda's cabinet. Born in Adachi, Tokyo, he graduated from Nihon University, earning a medical degree. In 1993, he was elected for the first time as a member of the Japan New Party. In December 1997, he joined the Liberal Democratic Party. He represented Tokyo's 13th district in the House of Representatives.
Yoetsu Suzuki (鈴木 陽悦, Suzuki Yōetsu; born January 10, 1949) is a former Japanese politician who served as a member of…Yoetsu Suzuki (鈴木 陽悦, Suzuki Yōetsu; born January 10, 1949) is a former Japanese politician who served as a member of the House of Councillors in the Diet (national legislature). A native of Akita, Akita and graduate of Chuo University, he was elected to the House of Councillors since 2004 after working at Akita Television.
Masanori Nishio (西尾 正範, Nishio Masanori; 3 January 1949 – 28 May 2022) was a Japanese politician. Nishio was born in…Masanori Nishio (西尾 正範, Nishio Masanori; 3 January 1949 – 28 May 2022) was a Japanese politician. Nishio was born in Ōno, Hokkaidō, now part of the city of Hokuto. After graduating Kyoto University, he became a public servant in 1973. He was appointed deputy mayor of Hakodate by its then-mayor Hiroshi Inoue (politician) in July 2003, but resigned himself in December 2006 due to a rift with the mayor over the construction of a retirement home. He beat Inoue in the mayoral election held on 22 April 2007, and took office on 27 April.
