Barmi Sushi Shabu Wangsimni is a buffet restaurant on the fourth floor of Bitplex at Wangsimni Station, serving sushi and seafood shabu-shabu together. Diners take unlimited scallops, shrimp, webfoot octopus, meat and vegetables, and choose the broth themselves. The dining room is large with big tables, which suits family meals and group gatherings, and the sushi is made to order. Staff service is on the brusque side.