Hanamaru Udon is a self-service Sanuki udon shop in the food court inside the Ryubo store in Naha, Okinawa, selling udon, tempura and rice balls. Udon comes in mini and regular sizes, and tempura or rice balls can be added on their own. You get your own water at the self-order counter and can order from a Chinese-language menu, with staff explaining how to order and food coming out quickly. At lunchtime the order counter and food court seating are crowded.