Upon graduating from The University of Tokyo’s Faculty of Law in March 1986, he joined the Ministry of Foreign Affairs. After pursuing further studies in Portugal (PGD in European Studies, Faculty of Law, University of Lisbon) and the United States (MA in National Security Studies, Georgetown University), he served as Counsellor to the Embassy of Japan in Thailand and the Embassy of Japan in the United States; Director, First North American Division, North American Affairs Bureau; Executive Assistant to the Minister of Foreign Affairs, Minister's Secretariat; Counsellor, Cabinet Secretariat; Counsellor, International Legal Affairs Bureau; Deputy Assistant Minister, Minister’s Secretariat; Director-General (Ambassador), Disarmament, Non-proliferation and Science Department, Foreign Policy Bureau; Director-General (Ambassador), Latin American and Caribbean Affairs Bureau; and Director General of Public Diplomacy, Press Secretary, Minister’s Secretariat. Following a stint as Director, Refugees Assistance Headquarters, Foundation for the Welfare and Education of the Asian People, he was appointed Chief Executive Director of The Japan Institute of International Affairs in October 2023.