- 2002/04 - 2016/03 Rissho University Faculty of Letters, Department of Literature
- 1995/04/01 - 2002/03/31 Rissho University Faculty of Letters
- 1986/04/01 - 1995/03/31 Rissho University
- 1978/04/01 - 1986/03/31 Rissho University
- 1974/04/01 - 1978/03/31 Rissho University
- Rissho University Faculty of Letters, Department of Literature
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