Place the egg in a small saucepot and cover with water. Cover the pot, place over high heat and bring to a boil. Once boiling, remove from heat and let sit (still covered) for 7 minutes. Then, rinse with cold water until able to be handled and peel. Slice in half.Meanwhile, place a large skillet over medium-high heat and add in the oil. Once oil is shimmering, add the white scallions, ginger, onion and garlic to the skillet and cook for 5 minutes or until onions soften. Then, pour in the stock and soy sauce, cover and bring to the boil. Add the mushrooms, lower to a simmer and let cook for 5 minutes or until mushrooms are softened. Then, add the daikon noodles and kale and let cook for 5-7 more minutes or until noodles are softened and kale wilts.Divide the soup into two bowls. Garnish with green scallions, sesame seeds and hot sauce. Top with half of the egg per bowl.