ウェブKatsuya OKADA. Member of Japan’s House of Representatives. Secretary-General. The Constitutional Democratic Party of Japan. Former Deputy Prime Minister, Minister of Foreign Affairs. Office: #506, 1st Members’ Office Building, 2-2-1 Nagatacho, Chiyoda-ku, Tokyo. Tel: +81-3-3508-7109. Fax: +81-3-3502-5047. Email: webmaster@katsuya.net.