OKO - Fun Okonomiyaki Bar is an okonomiyaki restaurant in Dotonbori, Osaka, serving vegan, vegetarian, and standard menus. It offers okonomiyaki and yakisoba, and drinks are self-poured. Orders are placed by lining up, and alcohol refills are paid in cash by pressing a chicken figure next to the counter. The owner runs the place alone, so waits can exceed one hour.