Natural Smile Co., Ltd. (CEO: Daisuke Hama, Headquarters: 2-48-8 Nakayama, Kagoshima City, Kagoshima Prefecture) will extend the "Free Fried Potatoes with "Smile BEST4" Order" campaign currently running at all three Natural Smile Pizza take-out specialty stores until August 31, 2026. The featured product, "Smile BEST4," ranked first among all products in sales performance at the Nakayama Main Store from June 1 to June 24, 2026. "Seafood BEST4," a product featured in the summer smile campaign, ranked second during the same period. Despite the availability of summer campaign products, "Smile BEST4" maintained its No. 1 popularity. Furthermore, since its launch on February 14, 2026, "Smile BEST4" sold a cumulative total of 3,020 units by May 31, 2026, earning it the No. 1 spot in the first half of 2026 popularity rankings. In response to this continued support, the extension of the fried potato bonus was decided to allow more customers to enjoy it at a great value. The popular No. 1 "Smile BEST4" will receive a free fried potato bonus until August 31, 2026. "Smile BEST4" is a quarter pizza that allows customers to enjoy four flavors in one: Margherita, Teriyaki Chicken Smile, Mochi & Mentai, and Hokkaido Potato. Its ability to offer a variety of popular flavors at once makes it an easy choice for families or groups with differing preferences, and it has garnered support as a signature product of Natural Smile Pizza. With this campaign, customers who order "Smile BEST4" will receive free fried potatoes at no extra charge. A small size of fried potatoes will be included with the M size pizza, and a large portion of fried potatoes with the L size pizza, catering to family dinners, weekend gatherings, and summer vacation take-out needs. "Smile BEST4," a quarter pizza featuring Margherita, Teriyaki Chicken Smile, Mochi & Mentai, and Hokkaido Potato. "Smile BEST4" also secured the No. 1 position in the first half of 2026 popularity rankings. Since its release on February 14,