History of International Politics, International Relations in the Asia-Pacific, Japan–Korea and Japan–North Korea Relations, and Security Studies.
My research specializes in the international relations and security dynamics of East Asia, with particular focus on the relationship between Japan and the Korean Peninsula. While this remains my primary area of expertise, I also maintain strong academic interests in many other regions of the world, including the Middle East.

I am interested in examining interstate issues not only from the perspective of governments, but also through the lenses of civil society, public opinion, and the media. Although the world has experienced numerous conflicts and confrontations, none of these events can be fully or “correctly” explained from a single viewpoint. How an issue is understood varies depending on which national standpoints to adopt, and which actors to emphasize. Moreover, the identities held by states and societies significantly influence how their international relations are interpreted. For this reason, I believe it is essential to shift perspectives freely and analyze issues from multiple angles. Through this process, we can recognize the complexity of international affairs and appreciate that no single interpretation is definitive. An equally important aspect of research is the ability to clearly communicate one’s argument to others. To achieve this, I consider it vital to integrate both macro- and micro-level approaches: intentionally maintaining one's distance from analytical objects by drawing on international relations theories, while also appreciating and utilizing cultural characteristics and local contexts observed on the ground in one's research. Balancing these two perspectives enables a more nuanced and comprehensive understanding of international issues.