Sushi Sanwon Banjuheon is a sushi restaurant in Gangnam, Seoul, that serves sushi, kaisen-don, and general anju. It is a two-minute walk from Gangnam Station and offers a lunch special kaisen-don, a 10-piece omakase, aged sashimi, futomaki, and tilefish (okdom) fries. The space has an omakase counter and separate rooms, making it suitable for quiet meals or work meetings. Rooms cannot be booked through Naver, so reservations must be made by phone.