Yoshiaki passed his public accountancy certification while studying at University.

After graduating, he joined Deloitte Touche Tomatsu LLC, where his responsibilities included accounting audits for listed companies and

IPO assistance for venture/medium sized companies.

4 years later, he joined Colopl, Inc. in 2015, and in Dec 2018 he joined the Board of Directors, since holding joint responsibilities in the corporate division & GameFi preparation

division. Currently, he is also a director for Brilliantcrypto, the Colopl subsidiary which works on Web3 games.