Wash the cucumber thoroughly and slice thinly.
Sprinkle salt over the cucumber and let it sit for 10 minutes, then remove excess moisture.
Julienne the carrot thinly.
Mince the garlic.
Place the cucumber, carrot, and garlic in a bowl, add sugar, vinegar, salt, and sesame oil, and mix well.
Sprinkle sesame seeds on top to finish.