takahashi is company president. takahashi says the secret sauce to his business is accommodating as many people as possible. rooftop space is limited and conventional grills need extra space to do the cooking. takahashi decided to place the grill in the middle of the table allowing diners to stay seated. this simple trick doubles the number of customers. here's another one. a retractable roof keeps the business rain proof. they now operate six barbecue sites around tokyo. >> translator: i often hear people say they want to he a barbecue. i have added many improvements so that it becomes more accessible and convenient. >> reporter: another company is targeting the high end market. this office building is in the heart of tokyo. with a japanese garden, the rooftop is a place to relax. the barbecue operator rents the space on weekends. the pitch here is privacy. single group bookings only. its run by a 2-year-old venture business. unlike other cooking spots, this one provides food. and not just any food. the menu draws

japan' ayaka takahashi and missssaki matsuitomo won. they lost the first game to the danes but wowon the second with teamwork. in the third they led 19-16 but the japanese took five consecutive points to turn things around. back home family and friends cheered their champions. >> translator: i was so nervous the whole time. all i can say is that i'm so happy for them. >> translator: i want to give her a big hug, but i think my daughter would be too embarrassed. >> the gold means new heights for japanese badminton. the danes took silver and great britain settled for bronze. and in women's badminton singles, okuhara was to play on friday but will win by default. china's player has dropped out from a leg injury. in other competitions, kawai faced belarus in the 63 kilogram final. kawai won 6-0. it's the fourth consecutive gold medal in this category for japan. it was toughgher for the team captain in the 53 kilogram final. her goal was to win a fourth consecutive gold medal. she faced the u.s. yoshida was leading by one point but it turned