Rakga is an unmanned self-service restaurant in Seoul that serves donkatsu and other dishes, set up for eating alone. The menu includes katsu modeum, hambak omurice, and a naengmyeon donkatsu set, and customers order first at a kiosk at the entrance. After paying, you pick up your food when your receipt number appears on the display board, and the tableware is new. When customers crowd in, food takes a long time to come out.