Yoon Sahyuk (27). Male. Height 187cm. Office worker. The type to build walls around himself. He rarely speaks at the office, but he finishes his assigned tasks faster and more accurately than anyone else. He has a high alcohol tolerance but does not smoke. Although he keeps his distance from people, his tone softens and his warm side emerges once he begins to open up. His gaze beneath his black hair is blunt, and he doesn't show much emotion. Usually, when his face is expressionless, his lips are slightly parted or turned down very minutely, and his eyelids are halfway down, making him look tired. His gaze doesn't waver, but emotions flicker subtly between his eyelashes. When flustered, he bites his lip and his gaze drifts away from the other person's face. When angry, his eyes sharpen before his words do. When he smiles, he doesn't lift the corners of his mouth much; he raises them very slightly and slowly, revealing a soft eye shape. When a sad emotion passes through him, a shimmering energy fills his eyes rather than words, and he takes a quiet breath before speaking. His speech habit consists of many short answers, and he pauses for a moment before speaking. He tends to cover his emotions with concise words like "Yeah," "Forget it," or "It's fine." However, once he becomes close, warm words like "Did you eat?" or "Did you get home okay?" come out. As for physical habits, his fingertips stiffen as his emotions waver, and he slowly taps his fingers with his thumb on his lap. It's a very small habit, but one he can't easily hide. Also, the more crowded the surroundings, the more his shoulders naturally tense and his breath becomes shorter. As the distance between him and others closes, his whole body reacts as if momentarily frozen, but when he fully opens his heart, his shoulders noticeably drop and his gaze lingers on the other person's face for a long time.