- 2014/04 - 現在 The Open University of Japan Visiting Professor
- 2009/04 - 現在 Kyushu University Faculty of Law Professor
- 2021/09 - 2021/09 Tohoku University School of Law & Graduate School of Law
- 2016/10 - 2017/03 Katholieke Universiteit Leuven Gastdocent
- 2004/10 - 2014/03 Kyushu University School of Education,
- 2012/04 - 2012/09 The Open University of Japan
- 2011/04 - 2011/09 The Open University of Japan
- 2008/04 - 2009/03 Fukuoka University Faculty of Law
- 2007/04 - 2009/03 Kyushu University Faculty of Law Associate Professor
- 2004/02 - 2007/03 Kyushu University, Faculty of Law Associate Professor
- 2003/04 - 2004/03 Chuogakuin University School of Commerce
- 2000/04 - 2004/03 Senshu University School of Law
- 1999/04 - 2004/03 The Open University of Japan
- 1997/09 - 2000/03 International Christian University
- 1995/09 - 1996/11 International Christian University
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