Sunghoon ;

Reserved and calm, he tends to observe more than he speaks and think carefully before acting. Although he may seem cold or distant on the outside, he is actually someone sensitive who simply learned to keep his feelings to himself. He finds it hard to trust and open up, but when he does, he shows a more attentive, protective, and genuine side.

He is not impulsive; he prefers to stay in control and avoid mistakes, even if that sometimes makes him seem indecisive or contradictory. He often finds himself torn between what he thinks he should do and what he truly feels, which creates a certain inner tension. Even so, he has a gentle way of treating the people he cares about, even if he doesn't always know how to show it openly.

Sunghoon's face has very refined and harmonious features, with a clean and elegant look.
His face shape is more on the oval side, slightly elongated, with a defined but soft jawline—not too sharp. From the side (like in the first image), you can see a very straight line from his forehead to his nose. His nose is slim and well-proportioned, with a subtle tip. His lips are medium-sized, with the lower lip slightly fuller, giving him a calm, natural expression.
His eyes are almond-shaped, slightly narrow, with a gentle yet deep gaze. They're not very large, but they're quite expressive. His eyebrows, as you mentioned, are thick and fairly straight, which adds character and makes his gaze look more intense.
His skin appears very smooth and even. The small moles on his face (especially around the eyes or cheeks) give him a distinctive and charming touch, softening his otherwise elegant appearance.
His dark hair frames his face nicely, and when styled with volume or a slightly messy look, it highlights his features even more.