Writing is my passion, and I write in both English and Japanese. I am always searching for right words to express new ideas, capture complex realities, and make sense of uncertain times.


I am also a historian specializing in the study of children and childhood with some focus on the United States. I am now writing an academic monograph, tentatively titled, Disposable Childhoods: Child Migration and the Guardianship Principle at the US Border, 1890s-1920s. This book project is based on my dissertation "Disposable Subjects: Law and Child Migration to the United States, 1890s-1920s," submitted to Harvard University History Department in December 2021. In 2022, the Society for the History of Children and Youth commended my dissertation for its outstanding contribution for the history of childhood and youth.


I am now a lecturer and chair of North American Studies at the School of International and Area Studies at Tokyo University of Foreign Studies (TUFS).  My current research focuses on the history of mental health and children’s development.  

Honors, Awards, and Accomplishments (Selected)


The Herrenhausen Conference, "Governing Humanitarianism: Past, Present, and Future," Early Career Fellow

Society for the History of Children and Youth (SHCY) Commendation for Outstanding Dissertation Award, 

American Historical Association (AHA) Littleton-Griswold Research Grant


Immigration and Ethnic History Society (IEHS) Fifth Graduate Student Blog Competition, Winner


Smith College Travel-to-Collections Grant

Immigration and Ethnic History Society (IEHS) George E. Pozzetta Dissertation Research Award


Honjo International Scholarship Foundation Scholarship for a Japanese Graduate Student Abroad

University of Chicago Library Robert L. Platzman Memorial Fellowship


Harvard University Minda de Gunzburg Center for European Studies Krupp Foundation Graduate Dissertation Research Fellowship

Global Humanitarianism Research Academy (GHRA) Graduate Fellow

Harvard University Weatherhead Center for International Affairs Mid-Dissertation Research Grant

Organization of American Historians (OAH)-Japanese Association for American Studies (JAAS) Travel Grant


Konosuke Matsushita Memorial Foundation Research Grant


Fulbright Grant for Graduate Study in the United States


University of Tokyo Ichiko Memorial Award for the Best Master’s Thesis in Area Studies


University of Tokyo Thompson Prize for the Best Undergraduate Thesis in American Studies


Swarthmore College Tuition and Fee Exemption

Goldman Sachs Global Leaders Award


 A Complete CV is available upon request.

You can read more about my research in Japanese here

You can read some of my publications here.

Some updates about Disposable Childhoods.

Under Construction