In a large pot, bring the chicken stock to a simmer on medium heat.
Turn off the heat. Add the Oishii Instant Ramen Blend, soy sauce, mirin and sesame oil to the stock. Stir to combine.
Fill a second large pot with water and bring to a boil. Add the noodles and cook according to the instructions on the packet. Once cooked, drain and portion out into each serving bowl.