Sekai Yakiniku World Champion is a small yakiniku restaurant in Sapporo that serves all-you-can-eat A5 wagyu. The menu includes sagari, harami, and meat sushi, and each table orders through a smartphone. Reservations are common, so entry and exit times are strictly managed, and the standard all-you-can-eat limit is 90 minutes. Seating is cramped and ventilation is weak, so smoke and cigarette smells build up and cling to your clothes.