- 1997 - 2001 Taisho University
- 1997 - 2001 Taisho University, Lecturer
- 1997 - 2000 Tsuda College
- 1997 - 2000 Tsuda Women's College, Lecturer
- 1996 - 1998 日本学術振興会 特別研究員
- 1996 - 1998 Japan Society for the Promotion of Science, Researcher
- 1995 - 1997 Chiba University
- 1995 - 1997 国学院大学 非常勤講師
- 1995 - 1997 Chiba University, Lecturer
- 1995 - 1997 Kokugakuin University, Lecturer
- 1994 - 1997 University of the Sacred Heart
- 1994 - 1997 Sacred Heart University, Lecturer
- Taisho University Faculty of Literature, Department of Humanities Professor
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International Association for the History of Religions
, International Seminar on Religious Education and Values
, 大正大学哲学会
, 日本社会学会
, American Academy of Religion
, 日本宗教学会
, International Association for the History of Religions
, American Academy of Religion
, Japanese Association for Religious Studies