Japanese Udon Noodle Soup

Name: Japanese Udon Noodle Soup
Ingredients: 2 Tablespoons Olive Or Vegetable Oil; ½ whole Yellow Onion, Diced; 1 teaspoon Red Pepper Flakes; 1 teaspoon Freshly Cracked Black Pepper; 3 cloves Garlic, Minced; 3 whole To 4 Whole Chicken Sausage Links (or Whatever Sausage You Have Around); 5 stalks Kale, Leaves Removed; 1 quart Chicken Stock Or Broth; 2 teaspoons Soy Sauce; 2 teaspoons Fish Sauce; 2 teaspoons Rice Wine Vinegar; 1 teaspoon Hot Chili Oil; 8 ounces, weight Japanese Udon Noodles