Place the flank steak in a medium sized bowl, and add in 1 tbsp vegetable oil, the minced ginger, and sugar.
Combine the ingredients, and let sit for 30 minutes.
Boil the pasta, until done, then drain and set to the side.
Drizzle in 1 tbsp of vegetable oil into a large skillet, and heat it up over medium heat.
Once hot, add in the stir fry vegetables, and cook for for about 5 minutes.
Toss in the steak, and cook for about 2 minutes.
Next add in the spaghetti, drizzle in the sesame oil, and combine all of the ingredients.
Cook until the steak reaches your preference, then remove from the heat.
Plate the spaghetti stir fry, then sprinkle desired amount of red pepper flakes & sesame seeds.
Serve & enjoy!