- 1987 - 1993 Seinan Gakuin University
- 1987 - 1993 Seinan Gakuin University, assistant professor
- 1993 - - 西南学院大学 教授
- 1993 - - Seinan Gakuin University, Professor
- 1984 - 1986 Seinan Gakuin University
- 1984 - 1986 Seinan Gakuin University, Lecturer
- 1978 - 1983 Seinan Gakuin University
- 1978 - 1983 Seinan Gakuin University, assistant professor
- 1967 - 1978 Seinan Gakuin University
- 1967 - 1978 Seinan Gakuin University, Lecturer
- 1959 - 1962 Kyushu University School of Law
- 1959 - 1962 Ky(]E86CE[)sh(]E86CE[) University, assistant
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