Yuko passed the accountancy board in 2004 and became a Certified Public Accountant in 2008. While studying law at Keio University, she worked for Chuo Aoyama Audit Corporation (currently PricewaterhouseCoopers Aarata LLC), focusing on accounting audits of foreign companies. In 2012, she joined the Accounting Department of Novartis Pharma K.K. and was in charge of all accounting-related reporting. She has been involved in accounting in a global environment, including internal audit work for Novartis global affiliates. After two parental leaves in 2019, she became a full-time auditor at Studist Corporation, a provider of manual services in the cloud. In 2020, she was appointed as a full-time auditor at Takara Leben Co.,Ltd., a comprehensive real estate developer listed on the Prime Section of the Tokyo Stock Exchange. Two years later, she joined Monstarlab Holdings as external auditor.