Yoichi is a sushi restaurant in Seoul that serves tsumami and sushi as a course. The course includes fried pufferfish, hanchi, shima aji, uni, and fried hairtail, and continues through to dessert. It is on the second floor of a building, and the chef asks for opinions on portion size and taste while adjusting the course. Fish that are hard to find in Japan are also part of the course.