Crispy Authentic Chicken Katsu with Homemade Tonkatsu Sauce

Name: Crispy Authentic Chicken Katsu with Homemade Tonkatsu Sauce
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Cuisine: Japanese
Ingredients: 1/2 cup ketchup; 2 tablespoons soy sauce; 2 teaspoons brown sugar; 1 tablespoon mirin; 2 teaspoons Worcestershire sauce; 1 teaspoon freshly grated ginger; 1 teaspoon finely minced garlic; 1 pound boneless skinless chicken breast (cut in half horizontally); salt; 1 1/2 cups all-purpose flour; 3 eggs; 1 1/2 tablespoons water; 3 cups panko breadcrumbs; vegetable oil for cooking