Wash and thinly slice two English cucumbers and a sweet onion. Sprinkle with salt and let sit in a colander for 10 minutes.

In a mixing bowl, whisk together softened cream cheese, mayonnaise, soy sauce, rice vinegar, and sesame oil until smooth.

In a large bowl, combine the drained cucumber slices and onion. Add half of the dressing and toss gently. Let it rest for 5 minutes.

Transfer to a serving dish, garnish with sesame seeds or green onions, and serve immediately.