TWOSTONE&Sons Inc. (7352.T) operates as a holding company primarily engaged in providing IT engineer platforms and related services in Japan. The company offers engineer platform services including Tech Stars for IT engineer job placement support and Midworks for freelance engineer matching and independence assistance; consulting and advisory services; marketing platform services; technology education through programming school Tech Boost; and other initiatives such as IT lifestyle media Mayonez. It primarily serves IT engineers and businesses seeking technical talent, with all operations based in Japan and headquartered in Shibuya-ku, Tokyo, since its founding in 2013. In November 2025, the company announced a new management structure to support business expansion and strengthened group management; agreed to acquire an 80% stake in FAM Co., Ltd. for approximately ¥130 million; and saw recent group developments including Growth One's launch of face-to-face AI services and enableX's alliance with Aimesoft Co.