>>21436306 (OP)Make chicken soup then add the udon noodles. Optional: Add egg and a slur of cornstarch then top it off with chopped green onions to make it more Asian.
Stir fry minced garlic and some meat like shreds of chicken breast or canned tuna(remove the oil or water) then add the udon noodles. Add a splash of soy sauce and a few drops of sesame oil then season with salt and pepper. Top it off with chopped green onions.
If you have leftover Japanese curry, add the udon noodles to make udon curry.
If you want to make it a little bit more traditional Japanese, combine dashi stock, soy sauce, and mirin to make the soup then add the udon noodles. Top it off with shrimp tempura, fish cakes, and chopped green onions.