Thinly slice the cucumbers into rounds, about 1/8-inch thick.
In a small bowl, whisk together rice vinegar, toasted sesame oil, soy sauce, honey, and minced garlic until well combined.
Place the sliced cucumbers in a large mixing bowl.
Pour the dressing over the cucumbers and toss gently to coat evenly.
Sprinkle with sesame seeds and sliced green onions, then toss again.
Let the salad sit in the refrigerator for at least 10 minutes to allow flavors to meld.
Taste and adjust seasoning with a pinch of salt if needed.
Serve chilled, optionally garnished with extra sesame seeds or green onions.