- 2004/04 - 2005/03 Nihon University College of Law
- 2001/04 - 2004/03 Shizuoka Sangyo University
- 1994/04 - 2001/03 Nihon University College of Law
- 1994/04 - 2000/03 Kanagawa University Faculty of Economics
- 1999/04 - Nihon University College of International Relations
- 1989/04 - 1999/03 Nihon University Junior College
- 1997/04 - Nihon University Distance Learning Division
- 1980/04 - 1989/03 Nihon University Junior College
- 1977/04 - 1980/03 Nihon University Junior College
- 1976/04 - 1977/03 Nihon University Junior College
- 1973/04 - 1976/03 Nihon University Junior College
- 1972/04 - 1973/03 Nihon University Junior College
- Nihon University College of International Relations, Department of International Studies Professor
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