- 1999/02 - 2021/03 The University of Tokyo Graduate School of Arts and Sciences Professor
- 1989 - 1999 The University of Tokyo
- 1989 - 1999 The University of Tokyo, Associate Professor
- 1986 - 1989 Musashi University
- 1986 - 1989 Musashi University, Associate Professor
- 1984 - 1986 Musashi University
- 1984 - 1986 Musashi University, Lecturer
- 1981 - 1982 Kyoritsu Women's University
- 1981 - 1982 Kyoritsu Women's University, Part-time lecturer
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