Gorogoro Seongsu is a Japanese restaurant in Seongsu, Seoul, serving kaisendon and unagi donburi. The Nagoya-style unagi donburi comes with chewy eel coated in a sweet and salty sauce, and there are also ikura freshwater eel donburi and cube steak eel donburi. The dining room has eight tables and about eight seats for solo diners, rice can be added, and ochazuke can be requested when a third of the donburi remains. Prices are on the higher side.