Circulation Co Ltd is a Japan-based company mainly engaged in the provision of professional sharing business. Professional sharing is a new human resources utilization model in which a company utilizes the experience and knowledge of external professional human resources on a project-by-project basis, rather than hiring or dispatching, to solve its management issues. It provides four types of services. ProSharing Consulting is a management problem solving support service mainly for managers of small and medium-sized enterprises, venture companies, and large companies. Chief technology officer (CTO) experienced/engineer/designer support service FLEXY is a quasi-delegation contract type service. New business start-up support service Open Idea solicits ideas from professional human resources. Business succession support service Business Succession that Connects People focuses on people, organizations and growth strategies and provides specialized human resources to local companies.