Maguroya Kurogin Kuromon is a seafood shop in Kuromon Market in Osaka where you choose a cut of raw tuna. Pick ootoro, chutoro, or akami and it is prepared on the spot as sushi or sashimi. In the morning a tuna butchering show is held next to the shop, and the tuna you chose is cut in front of you. Seating is limited and the wait line is long.