Gupo Son Kalguksu is a restaurant near Gupo Station in Busan that serves kalguksu and Chungmu gimbap. The kalguksu uses noodles cut to order in an anchovy broth that is light but deep in flavor, and Chungmu gimbap comes with it. Food arrives quickly after ordering, the kkakdugi is refilled, and a spicy sauce can be added midway through the meal. The dining area is small.