Look for the Kajima’s Building's set of exterior stairs in the center of the block; walk up to the second-floor lobby, enter through the glass door and take the middle elevator down to the B level. It may sound like the plot of a spy movie, but it's not. It's how you arrive at this sleek, edomae-style omakase. Fish is largely sourced from Japan and the cocktail pairing is a nice complement. Nigiri is left to shine with a stroke of nikiri and simple toppings of yuzu kosho or ginger, but items like the shredded sous vide scallop roll prove they're playful too. Shrimp cake with panko-battered, deep-fried lotus root is spot on, while minced spearhead squid topped with Hokkaido bafun uni tucked in nori hits all the right notes. Soy sauce cheesecake is a smooth and rich ending.