- 2024/04 - 現在 Hokkaido University Graduate School of Law
- 2008/04 - 現在 Graduate School of Law, Hokkaido University Professor
- 2020/04 - 2022/03 Hokkaido University Dean, Law School
- 2015/08 - 2015/10 Centre for Law, Medicine and Life Sciences, Faculty of Law, University of Cambridge Visiting Scholar
- 2015/08 - 2015/10 Wolfson College,University of Cambridge Visiting Fellow
- 2002/04 - 2008/03 Faculty of Law, Meiji Gakuin University Professor
- 1997/04 - 2002/03 Faculty of Law, Sapporo Gakuin University Professor
- 1997/07 - 1998/03 Wolfson College,University of Cambridge Visiting Scholar
- 1997/04 - 1998/03 Faculty of Law, University of Cambridge Member of Faculty
- 1990/04 - 1997/03 Faculty of Law, Sapporo Gakuin University Associate Professsor
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THE JAPANESE ASSOCIATION OF SOCIOLOGY OF LAW
, THE JAPANESE SOCIETY FOR LAW AND PSYCHOLOGY
, JAPANESE ASSOCIATION OF LAW AND PSYCHIATRY
, JAPANESE ASSOCIATION OF MEDICAL LAW
, JAPANESE ASSOCIATION OF SOCIOLOGICAL CRIMINOLOGY
, THE CRIMINAL LAW SOCIETY OF JAPAN