- 2015/10 - 現在 Ehime University Faculty of Law and Letters Professor
- 2007/04 - 2022/03 Matsuyama University Faculty of Humanities part-time lecturer
- 2011/04 - 2020/03 Kobe College Graduate School Faculty of Letters part-time lecturer
- 2017/04 - 2018/03 The Open University of Japan part-time lecturer
- 2007/04 - 2015/09 Ehime University Faculty of Law and Letters Associate Professor
- 2012/04 - 2013/03 The Open University of Japan part-time lecturer
- 2009/04 - 2010/03 The Open University of Japan part-time lecturer
- 2004/10 - 2007/03 Ehime University Faculty of Law and Letters Associate Professor
- 2004/10 - 2005/03 Matsuyama University Faculty of Humanities part-time lecturer
- 2002/04 - 2004/09 Ehime University Faculty of Law and Letters Lecturer
- 2000/04 - 2002/03 Kobe College part-time lecturer
- 2000/04 - 2002/03 Osaka University Graduate School of Language and Culture Assistant Professor
- 1999/10 - 2000/02 Graduate School of Language and Culture, Osaka University Teaching Assistant
- 1997/05 - 1998/02 Graduate School of Language and Culture, Osaka University Teaching Assistant
- 1996/05 - 1997/02 Graduate School of Language and Culture, Osaka University Teaching Assistant
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