Wash the cucumbers and pat them dry. Slice them thinly or cut in a spiral style if preferred.

Place the sliced cucumbers into a large mixing bowl.

In a small bowl, whisk together soy sauce, rice vinegar, sesame oil, honey, minced garlic, and crushed red chili flakes until well combined.

Pour the dressing over the cucumbers and toss gently so all slices are coated with the dressing.

Add the sliced green onion and toss once more.

Sprinkle with sesame seeds if using, then serve immediately or refrigerate to let the flavors meld.