Our first lunch after we arrived in Japan was at this tempura restaurant near Shinjuku station, the honten location, not the one in Keio.
Although we arrived only a few minutes after they opened, it was a national holiday and there was already a queue outside, continuing inside but it didn't take long before we were seated at the upstairs counter. (I'd asked for counter seating rather than in the dining room area).
We went for two set menus, the hira zen (1,260 Yen) and the tempura zen (1,995 Yen).
Both included miso soup, rice, green vegetable pickle and of course, daikon and dipping sauce. Both included tempura prawn, vegetables, white fish tails and shrimp kakiage. The tempura zen also came with tempura eel and an additional pickle.
Service was brisk, as was trade, with many customers who arrived after us also out before us. But it was also friendly, and we didn't feel rushed through our meal. I imagine the pace is slower in the evening...
My favourites were the individual tempura shrimp and the shrimp kakiage, though the eel was also good. Actually all of it was good! The batter was light and crispy without being greasy and everything was cooked perfectly. Having experienced tempura (in London) where either the filling or batter is over or undercooked in relation to the other, this is something I certainly appreciated.