Hisashi Hoshino

Founded in 2000, GIR Co., Ltd. is a subsidiary of ITbook Holdings Co., Ltd. that provides investment services. The company is based in Tokyo, Japan.

Something Co., Ltd. engages in the ground improvement activities. The firm provides ground surveys, ground improvement and ground guarantee services. The company was founded on June 5, 1995 and is headquartered in Tokyo, Japan.

ITbook Co., Ltd. engages in information technology consulting services. It operates through the following segments: Consulting, Systems Development, and Temporary Staffing. The Consulting segment offers information technology (IT) consulting to support IT systems for authorities, local governments, and private sectors. The Systems Development segment develops new systems for life insurance, foreign exchange, market data, web applications and also sells hardware. The Temporary Staffing segment dispatches engineers to manufacturing and logistics field. The company was founded on June 6, 1990 and is headquartered in Tokyo, Japan.