Oyakodon is a very popular bowl dish for children in Japan. Most Japanese experienced eating this dish at least once, during their childhood. Chicken, egg, sliced onions, and other ingredients are all simmered together in a kind of soup which is made with soy sauce and a fish stock, and then served on top of a large bowl of rice. Nakau is a chain restaurant for Oyakodon, Gyudon and Udon. Prices are very affordable. You can find the restaurant in many places throughout the country.