Cook the soba noodles according to package instructions (mine is about 6 minutes in boiling water).
Meanwhile, chop broccoli, and snap peas roughly into bite-sized pieces, and slice red peppers into strips.
When soba noodles are done, drain it and rinse it with cold water and set it aside.
Heat up a frying pan on medium-high heat with some vegetable oil. Meanwhile, mince a clove of garlic.
Fry the minced garlic in vegetable oil until it starts to brown.
Add the vegetables (snap peas, broccoli, red peppers) and stir-fry until cooked to your liking. Add the mirin and some ground pepper halfway as you are stir-frying.
Add in the soba and stir-fry it briefly (mainly just to combine the ingredients). Turn down the heat (or just turn it off if your pan is very hot) and add the soy sauce.
Combine the soy sauce well with the ingredients and give it a taste, then add salt to taste.