GU Co., the sister brand of the Uniqlo clothing chain under Fast Retailing Co., opened its first U.S. store in New York on Thursday, while also launching an online shop with a delivery service covering the entire country. The “GU NY SOHO” flagship store, selling clothing, shoes and bags, is located in the SoHo shopping district in Manhattan and has a total retail space of about 950 square meters, it said. Earlier this month, the company set up a U.S. headquarters function to handle business strategies for the large U.S. market, looking to accelerate store expansion there. “This New York store …