Mumu Donkatsu is a donkatsu restaurant in Busan that serves Korean-style old-fashioned donkatsu and gyeongyangsik. The menu is divided into items such as basic donkatsu, nunkkot donkatsu, and a half-and-half spaghetti set, and a soup is served before the meal. Customers pay in advance at a kiosk and take side dishes from a self-service bar, and the shop has been running for 10 years. The unlimited refills of rice and side dishes are no longer offered, so a bowl of rice must be ordered separately.