Cook ramen noodles according to package instructions and set aside.

In a pot, combine chicken broth, soy sauce, mirin, and sesame oil. Bring to a simmer.

Add sliced shiitake mushrooms and chopped bok choy. Cook until vegetables are tender.

Divide the cooked noodles into serving bowls and ladle the hot broth over them.

Top with green onions, soft-boiled eggs, grilled chicken slices, and nori.

Serve hot and enjoy the authentic Japanese ramen!