- 2012 - Kumamoto University Faculty of Law
- 2012 - Professor, ,Faculty of Law,Kumamoto University
- 2003 - 2007 助教授
- 2003 - 2007 Associate Professor,
- 2000 - 2003 Hakuoh University
- 2000 - 2003 Lecturer
- Kumamoto University Faculty of Law, ,Faculty of Law,Kumamoto University Professor
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