We read about Tenkane (and their specialty in tempura) and were eager to try it. On our first attempt, they had just run out of food (because they buy as much as they think they will sell daily -- a great indicator of how fresh the ingredients are). We came by the next night and there was a party going on, but they had two seats for us! It's a set menu (your choice of three different options), and while it doesn't read as very much food, it's actually quite a bit!
The ingredients were top-quality, the service was perfect, watching the chefs prepare it in front of us was less of a show and more of an art form. Each piece goes straight from the chef to your plate -- and everything we had was delicious!
A must-visit while in Tokyo!