- 1995 - 1998 Tsuru University
- 1995 - 1998 Tsuru University, Assistant Professor
- 1998 - - 都留文科大学 教授
- 1998 - - Tsuru University, Professor
- 1991 - 1995 Yamanashi Eiwa College
- 1991 - 1995 Yamanashi Eiwa Community College, Assistant
- 1987 - 1991 Yamanashi Eiwa College
- 1987 - 1991 Yamanashi Eiwa Community College, Full-time
- Professor
- lecturer
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