Remove the skin and bones from the chicken but save them. Shred the meat and set aside.
Heat the oil in a large Dutch oven or stock pot over medium heat. Add the garlic and ginger and cook, stirring, for about 1 minute or until fragrant. Add the chicken broth, water, tamari, and miri along with the chicken bones and skin. Bring to a boil. Reduce heat and simmer uncovered for 20-30 minutes. Strain the broth, season to taste with salt and pepper and keep warm.
Place the chicken in a large skillet with the teriyaki sauce and heat over medium heat until heated through and the sauce is absorbed, about 5 minutes.
Cook the ramen noodles according to the package directions.
To serve, divide the noodles among 4 large bowls and ladle the broth over. Top as desired and eat.