Dumori Isusa is a small Japanese restaurant in Jeju run by a married couple, serving sushi, udon, and donkatsu. A set of assorted sushi, hoe-deopbap, and cold momil are available in one place, and the udon noodles are chewy. The couple runs the place, and the parking lot is spacious enough to make stopping by car convenient. When customers crowd in, dishes come out late and the wait for rice gets long.