Giken Holdings Co., Ltd., together with its subsidiaries, engages in the construction business and related operations in Japan. It is also involved in the manufacture and sale of wave-dissipating root blocks, landslide prevention work, and radiation shielding interior work; leasing and sale of circular steel formworks and construction materials; medical consulting; and hardware and software planning and development services, as well as manufactures, processes, sells, and installs steel fittings. The company was incorporated in 2018 and is headquartered in Tokyo, Japan.