Katsui, born in Tokyo, built a career in international development, working in the Philippines, Indonesia, Afghanistan, Rwanda, and Bhutan before returning to her hometown in 2019. Since then, she has led ex-post evaluations of Japanese government-funded development projects worldwide and has been a member of the ASIJ community. Currently, she keeps busy engaging with wonderful people from the community and contributing to enhancing the school environment as Vice President of the PTA.