- 2020/04 - 現在 International Christian University President Professor
- 2017/04 - 現在 Member of the Faculty Council of International Christian University Professor
- 2007/04 - 現在 Chair, Division of Humanities, International Christian University
- 2007/04 - 現在 国際基督教大学人文科学科(2008年度より文学研究デパートメント)教授
- 2019/04 - 2020/03 International Christian University Manager(Dean)
- 2018/09 - 2019/03 Graduate School of Arts and Sciences, International Christian University Professor
- 2016/09 - 2017/03 International Christian University Professor
- 2013/04 - 2015/03 International Christian University Professor
- 2011/04 - 2013/03 International Christian University
- 2010/04 - 2011/03 Graduate School of Comparative Culture, International Christian University Professor
- 2010/04 - 2011/03 Graduate School of Comparative Culture, International Christian University GS Program Director,
- 2009/04 - 2010/03 Chair, Graduate School of Comparative Culture, International Christian University
- 2003/04 - 2007/03 Assistant Dean, College of Liberal Arts, International Christian University
- 2001/04 - 2007/03 International Christian University
- 1996/04 - 2001/03 Assistant Professor (in old system) Associate Professor
- 1995/04 - 1996/03 University of Tokyo
- 1995/04 - 1996/03 University of Tokyo Assistant, Monbu-kyokan, Graduate School of Humanities
- 1994/04 - 1995/03 University of Tokyo (Assistant, Monbu-kyokan, Faculty of Letters )