Ganko-Oyaji is an izakaya in Yoyogi, Shibuya, Tokyo, a short distance from the city center, serving Hokkaido uni, snacks, and a range of sake. The premium course includes sake such as Juyondai and Jikon, recommended to match the food. Seating runs for two hours with last order at the ninety-minute mark, and orders and sake explanations are available in Korean and English. You must finish the glass you are given before the next drink can be added, which makes the time feel short.