| Affiliation | TOMIN First |
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| Terms served | Five terms (from July 23, 2005 to July 22, 2013; from July 23, 2017 to present) |
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| Committees | Committee on Public Enterprises |
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| Contact | Address：5-20-5 Otsuka, Bunkyo-ku, Tokyo 112-0012
Phone：+81-(0)3-3945-3945 |
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| Electoral district | Bunkyo |
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| Website | |
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