- 2004/04 - 2020/03 Chuo University Faculty of Letters
- 2008/04 - 2014/03 Chuo University The Institute of Policy and Cultural Studies
- 1990/04 - 2012/03 Tokai University School of Letters
- 2005/04 - 2007/03 慶応義塾大学文学部非常勤講師
- 1995/04 - 2004/03 Komazawa University Faculty of Letters
- 1999/04 - 2001/03 Tokyo Woman's Christian University
- 1998/04 - 2000/03 慶応義塾大学文学部非常勤講師
- 1994/04 - 1998/03 Chuo University Faculty of Letters
- 1991/01 - 1995/03 宮内庁(書陵部編修課主任研究官)
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