Sushijak is a sushi restaurant in Changgok-dong, Sujeong-gu, Seongnam that serves sushi and sashimi omakase. Its courses run from a lunch sushi course to sashimi omakase, with variations that include futomaki, sayori sushi, and pairings of eoran and green plum. Service begins at set times at the counter, and there are about three rooms as well. Reservations are made through CatchTable and are required, so walk-ins are difficult.