Nippon Insure Co., Ltd. provides rent guarantee services for rental housing in Japan. It operates through the Guarantee Business and Other segments, offering rent guarantees for rental stores and offices as well as expense guarantees for nursing care and hospitalization. The company also runs coin laundry stores under the WASH House brand and women's fitness centers under the Curves brand. Incorporated in 2002 and headquartered in Fukuoka City, Japan, it operates as a subsidiary of Miyoshi Real Estate Co., Ltd.