Drain the tuna, crab sticks, and boiled edamame in a strainer to remove excess moisture.
Boil the somyeon noodles, rinse in cold water, and drain well.
Place the noodles in a bowl and top with tuna, crab sticks, and edamame.
Add chopped cucumber and carrot.
Drizzle with low-sodium soy sauce, olive oil, and lemon juice; toss well to combine.
Sprinkle with sesame seeds to finish.