Major Practice Areas
Employment and Labor / Dispute Resolution / Mergers & Acquisitions / Corporate / Restructuring and Insolvency
Other Practice Areas


Ryusaku Saito is an Associate attorney in our firm’s Tokyo Office. He is a young attorney who has been accumulating unique and valuable experience since he joined the firm by handling a variety of cases with the Partners and Senior Associates of our firm. Mr. Saito endeavors to advise his clients clearly and precisely so that they can better understand the relevant issues, making it possible for the clients’ businesses to succeed. Mr. Saito completed a law school program called, “Business Law Course”, which focused on corporate legal affairs, and in law school, he had the opportunity to learn important skills not only in corporate law and anti-monopoly law, but also in negotiation, accounting, corporate finance, and other areas, from specialists in fields other than law. Mr. Saito is dedicated to continuing to develop his expertise in the areas of employment and labor law, business restructuring, and M&A.

(Due to being appointed the Representative Director of Big Circle Group Holdings Co., Ltd., as of April 1, 2023, Ryusaku Saito is currently not practicing as an attorney.)

Education & Professional Career

Apr 2023 – PresentBig Circle Group Holdings Co., Ltd., Representative Director
Jan 2019Joined Kitahama Partners
Dec 2018Graduated from the Legal Training and Research Institute of the Supreme Court of Japan; Admitted to practice in Japan
Mar 2017Hitotsubashi University School of Law (J.D.)
Mar 2015Chuo University (LL.B.)