Boil the spaghetti noodles in boiling water.
Drain the noodles and toss them lightly with olive oil.
In a pan, add olive oil and sauté minced garlic.
Add soy sauce and perilla seed powder, mixing over low heat.
Add the cooked noodles to the pan and mix well.
Slice green onions and add them, mixing together.
Plate and drizzle a bit of perilla oil on top.