Research Fellow / The Japan Institute of International Affairs (JIIA)
E-mail: otani[at]jiiaorjp

JIIA Project

Center for Territory and History

Research Interests

International Relations, Conflict Processes, Status, Japan-South Korea Relations


Ph. D. Candidate, Graduate School of Law, Hitotsubashi University
Master of Laws (March 2022, Hitotsubashi University)
Bachelor of Laws (March 2016, Hitotsubashi University)

Professional Experience

Sep 2023 - Dec 2023 Japan's Foreign Policy Making TA (Hitotsubashi University School of International and Public Policy)
Apr 2023 - May 2023 Modern International Society and Politics TA (Hitotsubashi University)
Nov 2022 - Feb 2023 RA, Grants-in-Aid for Scientific Research (Mori Arinori Institute for Higher Education and Global Mobility, Hitotsubashi University)
Sep 2022 - Oct 2022 International Security TA (Hitotsubashi University)
Sep 2021 - Oct 2021 International Security TA (Hitotsubashi University)
Apr 2016 - Jul 2019 Staff Writer (The Yomiuri Shimbun)


  • “Transition to Antagonism between Japan and South Korea: Focusing on the Misrecognition of Rising Status,” The Journal of Next-Generation Humanities and Social Sciences, (19) 19-35, Mar 2023 (Peer-reviewed)
  • “Improvement in Status Perceptions and Policy Change of Emerging States: A Case of South Korean Diplomacy in Japan-South Korea Relations during the early 2010s,” Christianity and Culture, (18) 247-280, Dec 2022 (Peer-reviewed)


  • “Inconsistency between Multilateral and Bilateral Dimensions in Status Recognition,” The 2023 Annual Convention of the Japan Association of International Relations (JAIR), Nov 12, 2023
  • “The Intersubjective Condition of Japan-South Korea Conflict: Focusing on the “Status Inconsistency” in the early 2010s,” Japan Korea Next Generation Academic Forum 19th International Academic Conference, Aug 20, 2022
  • “Status Equalization and International Conflict: Rethinking the Mechanism of Deteriorating Relationship between Japan and South Korea over History Issue,” The 2021 Annual Convention of the Japan Association of International Relations (JAIR), Oct 31, 2021
  • “Unraveling the “Asian Paradox”: An Answer to the Theoretical Challenge in Explaining Conflict and Cooperation in Japan-South Korea Relations,” Korea, China, and Japan next-generation seminar: Korea, China and Japan graduate student panel, Korea-China-Japan International Conference, Korean Association of International Studies (KAIS), Jul 2, 2021


  • The Japan Association of International Relations (JAIR)
  • International Studies Association (ISA)