Located in one of the most crowded locations of Osaka, It is a must go restaurant. I had to wait for 10 minutes before going in, but if you dont wait in Japan, it means it is not a good place.
They will explain about the usage of the sauce, which you have to use once for each kushikatsu. I had a beer to start and waited kushikatsu while eating free cabbage. Kushikatsu was served from the counter, not very expensive (120 Yen) and very delicious with many tastes.
I spent around 50$ for 2 people. Something you can find only in Osaka is worth.