Convenience store retailer Seven-Eleven Japan Co. will take on Japan’s doughnut chains next year by selling private brand doughnuts. Temperature-controlled displays will be installed in 17,000 stores nationwide. The doughnuts will sell for around ¥100 each. Doughnuts will be available in six flavors, including strawberry, under the Seven Cafe Doughnuts brand and will of course complement their coffee. The retailer hopes to sell 600 million doughnuts annually.