Sushi Sian is a sushi restaurant in Centum, Busan, serving pieces such as yellowtail, sweet shrimp, scallop, uni, and eel on red vinegar shari. It offers omakase and hand-pressed sushi. The counter has only eight seats, so reservations are required, and the chef explains the names and ingredients of the sushi when asked. The red vinegar shari has a strong saltiness and acidity that divides diners.