Doa Donkatsu Donburi Jeonmun is a tonkatsu restaurant that moved to Guseo-dong near Guseo Station in Busan. It serves rosu katsu, hire katsu, and chicken katsu. A rice porridge course comes out before the meal, and udon is also on the menu. The restaurant is on the 7th and 8th floors of a building, so you have to go up to a high floor.