Reona has provided legal counsel to clients on a diverse range of matters, including M&A, general corporate issues, securities, anti-corruption, and fraud investigations. He has primarily handled complex cases, including litigation related to artificial intelligence and intellectual property, representing esteemed multinational corporations.

Reona was seconded to a legal team at a multinational technology company for over a year. Through the experience of this secondment, he has endeavored to offer legal advice on several measures proposed by a client's business manager, aiming to assist the client in selecting the most effective option with minimal legal risk, while also taking into account their internal operations.

Reona received  his B.Ec. from Keio University, and his J.D. from Tokyo University Law School. He completed his training at the Legal Training and Research Institute of the Supreme Court of Japan (72nd trainee).

Reona is a bengoshi admitted to practice law in Japan and is a member of the Tokyo Bar Association.