Mitsuwa Marketplace, the largest Japanese supermarket chain in the United States, is expected to open a 26,000 square foot store at 100 Legacy Drive, Plano, on April 14. The supermarket carries a variety of quality Japanese groceries, general items, electric appliances, cosmetics and other products. Mitsuwa Marketplace was established in 1998 and has seven stores in California, one in New Jersey, and one in Chicago. www.mitsuwa.com Editor's note: This impact has ben updated to provide a specific open date.