Isomaru Suisan Namba Nankaidori is a 24-hour seafood izakaya near Dotonbori in Osaka that serves sashimi, sushi, grilled shellfish and alcohol. The typical approach is grilling shrimp and squid on a personal burner and pairing them with grilled crab shell and crab innards. Tablets at the table let you switch the menu to Korean and order, and the venue is open in the early hours. The sashimi had a strong fishy smell and a dry texture.