Boil the udon noodles per manufacturer’s instructions. Drain the water. Set aside.
Heat a pan/skillet on medium-high heat and once heated add some oil and spread it thinly. Add the bacon or tofu and cook for 2 to 3 mins. Stir occasionally.
Add the onion and Kimchi and cook until they are wilted (about 1 to 2 mins). Add the sauce and mix them well.
Add the udon noodles and mix them with the rest of the ingredients. Add the green onions and stir lightly.
Serve the noodles on a plate and garnish with the egg, ground black pepper, more green onions, sesame seeds, and seaweed strips
DONE