Fields of specialization: Humanities & Social Sciences / Public law
Degree: 法務博士（専門職） (The University of Tokyo), Master of Laws (Columbia University)

Fields of specialization: Public law (Keyword：Administrative Law)
Degree: Doctor of Law (Hitotsubashi University)

Fields of specialization: Intergovernmental relationships and New Public management
Degree: Ph.D, Interdisciplinary Studies of Social Sciences (The University of Tokyo)

Fields of specialization: Administrative Law
Degree: Doctor of Law (Hitotsubashi University)

Fields of specialization: Local autonomy
Degree: Bachelor of Law (The University of Tokyo)

Fields of specialization: Tax Law
Degree: LL.M. (Harvard Law School)

Fields of specialization: International relations, US diplomatic history
Degree: Ph.D. (University of California, Santa Barbara)

Fields of specialization: International politics, International security
Degree: Ph.D (Hitotsubashi University)

Fields of specialization: International relations, Japan's foreign Policy, democracy support, foreign aid
Degree: Ph.D.（The George Washington University）

Fields of specialization: political science, civil war, Peacebuilding
Degree: Ph.D.（The George Washington University）

Fields of specialization: International Relations, International Political Economy
Degree: Doctor in Law (Hitotsubashi University)

Fields of specialization: International history
Degree: Received his LLM and Ph.D. in law from Hitotsubashi University

Born in Seoul, Korea in 1970.
Visiting researcher at Seoul National University, Korea (2013-2014).