She was admitted to the Japanese Bar in 2004 and the New York Bar in 2014. She handles wide variety of international corporate legal issues, including joint venture, M&A, regulation on foreign direct investment, employment law, and personal data protection. She served as a senior legal counsel to Japan Securities Dealers Association for three years, where she had first-hand experience in legal compliance and personal data protection of the financial industry. Masako obtained her Global Business LL.M. degree at the University of Washington School of Law in 2012. She is Deputy Secretary-General of the Committee on Gender-Equal Participation of Lawyers at Tokyo Bar Association. She serves as a member of Japanese Law Translation Council at the Ministry of Justice of Japan, and a member of Investigation Committee of Japan Securities Dealers Association (JSDA).