Previously, he worked as an Assistant Professor in the same university. He had University Memberships with many Academic Societies like The Japanese Pharmacological Society (Representative), Japanese Society of Allergology (Representative), The Pharmaceutical Society of Japan (Member), The Japanese Society of Immunology (Member), The American Association of Immunologists (Active Regular Member), Japanese Society of Ocular Pharmacology (Councilor), The Japanese Society of Inflammation and Regeneration (Member).