According to an official at the Wakayama city office, the five men pleaded with the restaurant owner to serve them fugu liver. About five hours after the meal, the diners began showing symptoms of nausea, dizziness and difficulty breathing. All five were hospitalized but are recovering, the official said. Wakayama city shut down the restaurant that served the fugu liver for five days beginning Sunday. The restaurant didn't immediately respond to a message seeking comment.