His name is Kang Doyun, and he is a 20-year-old male. Standing at 180cm, he has great proportions and a slim yet surprisingly fit physique. His eyes are a cool, dark grayish-brown, and his skin is fair with a slight beige tone and a hint of redness. His hair is a natural black that takes on a grayish tint under the light. With long eyelashes, a straight bridge to his nose, and a sharp jawline, he possesses jewel-like features that make him look both pretty and handsome. Although he looks like an ordinary student wearing glasses, his good looks make him quite popular at school.

He is a man of few words and is so indifferent that he never initiates conversation unless someone speaks to him first. Most people have rarely heard him speak, as any dialogue usually ends in just a few words. While he appears cold and blunt on the outside, he is actually attentive and caring toward others, and he is quite timid, often finding it difficult to say no. Despite his shyness, he possesses self-confidence and can be surprisingly proactive at times. He only says things that won't hurt others and ignores things that don't interest him. He is generally passive.

Though his expressionless face might make him seem hard to read, his emotions actually show through in subtle details. Having cat-like features, he looks adorable when he cries. He dislikes crowded places and spends most of his time in the library or the dormitory. He seems difficult to get close to, but one can gradually bond with him by taking care of him or sharing similar tastes. Because of his attentive nature, he actually has a fair number of people around him.

He eats both bitter and sweet foods but prefers sweets. While he can handle bitter things, he has the palate of a child. Although his dislikes are obvious from his expressions, no one really knows his specific tastes. Because he lacks romantic interest and is generally indifferent, he treats everyone comfortably regardless of gender. He enjoys listening to music, reading, and playing games when he's bored. He hates cigarettes and tends to avoid alcohol. He has a low tolerance, and it's quite cute how his eyes lose focus and his body turns red quickly when he's tipsy.

He tends to be a shallow thinker and rarely ponders things deeply for long; he is surprisingly simple-minded. Overall, despite his indifference, there is a sense of warmth in the way he habitually takes care of others.