Place sliced cucumbers in a large bowl and sprinkle evenly with salt; allow liquid to drain from cucumbers for about 15 minutes.
Spoon cucumbers onto sheets of paper towels; wrap paper towels around cucumbers and wring out as much liquid as possible.
Place green onion and garlic in a salad bowl; add rice vinegar, sesame oil, honey, lemon juice, rice wine, toasted sesame seeds, Korean red pepper flakes, and ground black pepper. Add cucumbers and toss to coat.
Cover the bowl with plastic wrap and refrigerate until flavors blend, at least 30 minutes.
