Nothing wrong with it at all, just not my favorite. It was served cold and had the consistency of pate, I prefer warm pieces sliced from the lobe like Zo's and Echigo's. Having eaten in all three restaurants this week (closest I'm ever going to get to a side-by-side comparison), I can safely say that Zo is still my top pick for ankimo.
My omakase lunch at Kiriko today was quite good, although I'm not in a huge rush to go back. The quality of the fish was stellar as always, but I prefer warm rice. It just makes such a huge difference to me. I had about a dozen different nigiri, including a couple I had never tried before, like barracuda and bonito (both excellent). The absolute highlight of the meal was the house-smoked salmon, easily one of the most sublime pieces of fish I've had recently. I would go back for that alone. Uni, seared halibut, scallops and toro were all wonderful too.
Lunch omakase also includes a blue crab handroll, miso soup and a salad all for a very reasonable $32. It is a LOT of food and I'm still stuffed 2 hours later. Very good value for such quality fish.