Fill a large pot with about 3 liters of water and bring to a boil over high heat. There's no need to salt the water. Cover the pot to help it come to a boil faster.

When boiling, add the soba noodles and cook for 4 minutes, stirring frequently with a large fork so they don't clump together or stick to the bottom of the pot.

Drain in a colander set in the sink and rinse immediately under cold running water until cool to the touch. Leave the colander in the sink to drain well.

In a large bowl, whisk together the sesame oil, soy sauce, sugar, rice vinegar, sesame seeds, green onions, garlic, and black pepper until combined.

Tap the colander firmly against the sink several times to remove as much water as possible. Pour the noodles over the dressing and use a fork to toss until evenly coated. Serve at room temperature, or chill until ready to serve.