Wako is a second-floor tonkatsu restaurant in Busan that serves both Japanese-style and Korean-style fusion tonkatsu. The premium sirloin tonkatsu is topped with a smoky sauce containing enoki mushrooms and green onion, and the basic tonkatsu comes with a sautéed vegetable sauce. At lunchtime the seats fill up, takeout is available, and the tonkatsu is fried crisp. The rice portion is small and no soup is served.