I bought a scoopon for a 90 minutes all you can eat sushi at this restaurant, Their all you can eat is not a true all you can eat session. You have to place an order for one dish per person, wait for them to prepare it and then once served, you have to finish them before you can place another order. The first order comes out within 8 minutes, the next one takes 10 minutes, the next order takes 12 minutes, the next one 15 minutes, the next one takes another 15 minutes. It just takes longer and longer for them to prepare the meal. Apparently this is their tactic to limit the "all you can eat" session. The fact that they are mentioning "all you can eat" is just misleading and frustrating. Shame on Japanese restaurants....
Next time try to go in group of 4 or 5, order 3 dishes to come out first, and then one dish after the 3 dishes comes out. you place an order for the remaining 2 dish. While waiting for the 3 dishes to come out prepare a list of dishes that you want to order one after another, make it as long/as much as you want, 50 or 100 dishes if necessary. Once the first 3 dishes arrived, you need to share one plate first, once you finish that you can finish the second plate, and so on, so one dish can be served continuously.
Ask to be seated close to the kitchen or the counter, the waitress hides behind the counter, trying not to be seen by you so that you cannot place an order quickly, and they also down the ordering process by collecting empty plates from your previous order, hence you better stack them before they arrive. Also they take other people order on the way back to the counter, maybe a good idea to go to the counter yourself with the order read more