Add the noodles and cook until tender, about 20 minutes; drain.
Meanwhile, heat the oi in a large saucepan over medium-high heat. Add the ginger and garlic. Cook, stirring, until fragrant, about 30 seconds. Add the chicken, stirring to coat. Stir in the broth, sake and soy sauce; bring to a simmer.
Cover and cook at a gentle simmer until the chicken is cooked through, about 10 minutes. Add the veggies and cook till tender, about 5 more minutes. Stir in the noodles and sprinkle with the cilantro.