Prepare the broth by heating chicken broth in a pot over medium heat.
Add soy sauce, sesame oil, and sliced green onions to the broth.
Stir in the sliced mushrooms and simmer for 5 minutes.
Add the fresh ramen noodles and cook according to package instructions, usually about 3-4 minutes.
Meanwhile, soft boil the egg by cooking it in simmering water for about 6-7 minutes, then plunging it in ice water.
Stir in spinach or bok choy, and let them wilt in the hot broth for about 1 minute.
To serve, ladle the soup into bowls and top with half an egg, extra green onions, and any additional toppings you desire.