2017 - 2021 Comparative Jurisprudence of the Institutes
2014 - 2019 Legal and Historical Research on the Relationship between Judgment and Evidence in Japanese Medieval Law-Reexamination of the Court Code
2011 - 2015 The Civil Procedure of Greek and Roman Law -A Parallel Study-
2011 - 2014 comparative history of the dispute resolution:judicial and extra-judicial patterns in the premodern society
2010 - 2013 A Study of the reciprocate style in trial proceedings of medieval Japan -Towards understanding the rules of evidence in medieval Japanese law-
2008 - 2010 Comparative Studies of the History of Dispute Resolution Pattarns : Ways of Social Arrangement in the Premodern World
2007 - 2009 Greek and Roman Law in Action-Towards Staging the Ancient Law and Justice
2007 - 2009 A Research for the contents of court's decision recorded in documents, and an analyses of the logic behind the legal thinking for the reasoning or justification of decisions in medieval Japan
2003 - 2005 日本中世法における和与(和解)無効に関する実証的総合研究
2002 - 2003 前近代日本社会における「和解」の法史的意義に関する基礎的研究
2001 - 2003 Comprehensive Research on the Trial System and Out-of Court Conflict Resolution in Mediaeval Japan
Some Aspects of the Japanese Legal History for Studying the Japanese Law in Global Context
(International Conference in Doshisha University, Legal Education in the Context of the Globalization 2016)
Moratorium in Japanese Medieval Law
(Tokyo-Oxford Summer Seminar 2016 in Cambridge 2016)
How can we see the real face of Japanese law?
(Tokyo-Oxford Summer Seminar 2014 in Cambridge 2014)