Sin Gyeongseop's Insaeng Chamchi is a Japanese restaurant near Balsan Station in Seoul that serves all-you-can-eat tuna hoe. The manager's recommended course includes bluefin tuna belly, uldae, and thick red flesh, and the same set is refilled once. Most seating is in rooms, and staff explain the tuna cuts and how to eat them. A basement parking lot is available, and the dining area is small.