Mix together all the sauce ingredients in a small bowl and set aside.
Slice bok choy in half. Heat a frying pan with olive oil on high heat. Sear bok choy until slightly browned on both sides, then add sauce and reduce heat to medium-low. Let it glaze, then remove from pan.
Add enoki mushrooms to the same pan with leftover sauce. Cook for about 1 minute only. Remove and set aside.
Bring a small pot of water to a boil and cook ramen noodles according to package directions.
Cube tofu and saute in a hot pan with oil, cornstarch, garlic powder, and soy sauce until browned and crispy. Add teriyaki sauce and reduce heat to low to glaze.
Drain ramen and toss with half the seasoning packet and half teriyaki sauce.
Assemble your bowl: noodles on one side, tofu, bok choy, and mushrooms on the other. Top with sesame seeds and green onions.