Jeju sushi restaurant with thick sashimi: Kkotdam Sushi
Kkotdam Sushi is a Japanese restaurant in Jeongsil, Jeju, serving sushi and sashimi. The assorted sushi and mini sashimi came with thick-cut fish, plus shrimp tempura and udon in the sushi set. Kkotdam Sushi was so good I came back, haha.