He worked as a group leader of researching and developing medical drugs at a leading Japanese chemical company, he had committed pharmaceutical researches about 10 years. After moving to the head office, he was focusing on running due diligence on medical drug candidates and platform technologies coming from European and American biotech companies, from the aspect of science and intellectual properties. He started his carrier at JAFCO, a Japanese largest venture capital firm, for more than 16 years, he had been investing in Japanese and American biotechnologies and served on the board of several investees. He established rich network with most of major pharmaceutical companies and many of leading venture capitals. He is an immunologist by training, earned his PhD in pharmacology at the university of Tokyo.