- 2015/07 - 現在 Sekigakusha Inc. CEO
- 2010/04 - 現在 Hosei University Faculty of Business Administration Professor
- 2015/06 - 2022/06 United Arrows Ltd. Outside Director
- 2019/11 - 2021/04 Shimachu Co., Ltd. Outside Director
- 2010/04/01 - 2016/03/31 Visiting researcher, Distribution science laboratory, University of Marketing and Distribution Sciences
- 2015/04 - 2016/03 Hosei University Dean of the graduate school
- 2009/04 - 2015/07 Sekigakusha Inc. Director
- 2008/04 - 2010/03 Professor, Faculty of Business Administration, Ritsumeikan University
- 2008/04 - 2009/03 Sekigakusha Inc. Auditor
- 2007/04 - 2008/03 Associate Professor, College of Business Administration, Ritsumeikan University
- 2005/04 - 2007/03 Associate Professor, College of Business Administration, Ritsumeikan University
- 2001/04/01 - 2005/03/31 MUJI.net CO., LTD. COO Director
- 2004/10 - 2005/03 Aoyama Business School, Part-time lecturer
- 2000/07/21 - 2001/03/31 MUJI.net CO., LTD. Sales Manager and Administrative Manager
- 1985/04/01 - 2000/07/20 World Co., Ltd.
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Japan Marketing Academy
, The Academic Association for Organizational Science
, Japan Society of Marketing and Distribution
, Japanese Society for Commodity Science
, JAPAN ASSOCIATION FOR CONSUMER STUDIES