Koji Yanai began his career at Fast Retailing Co., Ltd. in 2012, initially serving as a PR Officer for UNIQLO’s global marketing efforts. He ascended to the positions of Director in 2018 and Group Senior Executive Officer in 2020. Notably, Yanai spearheaded The Tokyo Toilet initiative as a personal endeavor and made substantial contributions to the planning, financing, and production of 'Perfect Days'.