Yes, Daisenhinomaru is a legitimate broker regulated by the Financial Services Agency (FSA) in Japan. This means it operates under strict regulatory guidelines designed to protect investors. As a member of the Japan Securities Dealers Association, it adheres to the rules established under Japan's Financial Instruments and Exchange Act. However, its focus on domestic clients means that its services might not meet the regulatory expectations for international traders. If you're based outside Japan, make sure to verify if their offerings align with your needs before committing to their services.