We eat Osaka once or twice a week, just depends how we are feeling. On our last visit we got there at 9pm for Teppenyaki. We always come semi late. Look if you don't wanna do it until 930 do not offer it until 930. We were seated immediately and our server told us she would be back in two minutes. The server was literally gone for a good 15-20 minutes, after telling us she would be back in two. Now I get what that were doing, they probably wanted to see if anyone else was going to come in so they didn't have to clean another table and bring out a cook for another party; but that is absolutely no reason to ignore paying customers for that amount of time.