Chamchigra is a tuna restaurant near Seolleung Station in Gangnam-gu, Seoul, serving a menu built around tuna. The Gold Special and Diamond Special include thick cuts such as bluefin akami and hongamasal, with unlimited refills of tuna. Meals are served in private rooms, and the chef explains the characteristics of each cut and brings refills on clean plates. The room seating looks like floor seating but is chair-style.