Raysum Co., Ltd. primarily focuses on real estate investment ventures within... Raysum Co., Ltd. primarily focuses on real estate investment ventures within Japan. Beyond its core property operations, the company also manages a network of community hostels. Furthermore, it operates a specialized surgical facility dedicated to providing medical care services tailored to assist the elderly. Established in 1992, the Tokyo, Japan-based firm was originally incorporated as Recrm Research Co., Ltd., before officially adopting the name Raysum Co., Ltd. in 2008.