Kaka was highly anticipated as I have heard so many good reviews from so many of my friends. I would recommend you make a reservation or else you might spend an hour or two waiting in line.
I went on a weekday when it was 24.99, unfortunately it did not have any of the special sushi's that I wanted like the scallop. The menu was very on par with a lot of all you can eat sushi restaurants, and was pretty mediocre in terms of selections The sashimi selection was very limited, the only good ones were salmon and butterfish. The torched items weren't as good as expected either it tasted like propane.
I liked the green tea crème brûlée though. I would not come back for it.