- 2021/04 - 現在 Yokohama National University Interfaculty Graduate School of Innovative and Practical Studies Professor
- 2013/04 - 現在 Yokohama National University Graduate School of International Social Sciences Department of International and Business Law Professor
- 2013/04/01 - 現在 Yokohama National University Graduate School of International Social Sciences Professor
- 2013/04 - 現在 Yokohama National University Faculty of International Social Sciences Division of International Social Sciences Professor
- 2010/04 - 現在 Fukuoka University Institute for Legal Practice
- 2009/04 - 2019/03/31 Hosei University
- 2015/04 - 2018/09 Rikkyo University
- 2013/04 - 2018/09 國學院大学 法学部・法科大学院 非常勤講師
- 2005/04 - 2013/03 Kokugakuin University Faculty of Law
- 2005/04 - 2010/03 Kokugakuin University Law School
- 2003/04 - 2006/03 Rikkyo University College of Law and Politics
- 2004/04 - 2005/03 Kokugakuin University Law School
- 1998/04 - 2005/03 Kokugakuin University Faculty of Law
- 2001/09 - 2003/03 ホフストラ大学 客員研究員
- 1995/04 - 1998/03 Kokugakuin University Faculty of Law
- 1995/10 - 1996/03 Seinan Gakuin University
- Yokohama National University
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