Kwansei Gakuin University, Department of Chemistry, School of Science and Technology, professor emeritus, Fellow.
In 1981, he became an instructor in Division of Biochemistry, Institute of Medical Science, The Jikei University School of Medicine, Tokyo, Japan and became an assistant professor there.
From 1989 he started working as an associate professor in Department of Chemistry, School of Science, Kwansei Gakuin University, Nishinomiya, Japan.
Because of the government reorganization, he became a professor in Department of Chemistry, School of Science and Technology, Kwansei Gakuin University from 2001.
Recently, he is very active in application of quantum chemistry to molecular spectroscopy, developing a strong bridge between them.