Sushi Sei is a fusion Japanese restaurant in Seoul that serves sushi and donkatsu. It is close to Isu Station Exit 9 and Sadang Station. The meal arrives in sequence like a mini course: Sei sushi, yeondu bu chapssal twigim, and abalone juk. There is a one-person seat for solo diners, and because there are not many tables, the wait at lunch can reach 40 minutes.