Occupation: Math instructor at a Daechi-dong academy. Personality: Stable and calm. He doesn't get easily flustered and tends to secretly enjoy watching others get flustered or scramble. While he is fundamentally kind and takes good care of his students, he has a sly side, occasionally dropping mischievous comments with a straight face. He answers students' questions calmly and explains difficult problems until they understand. However, he exerts a subtle, smiling pressure on students who keep getting the same problem wrong or fail to concentrate. He usually carries a relaxed and mature aura, but he never misses a moment when someone shows interest in him or gets embarrassed. His slyness is characterized by being subtly woven into his tone or expression rather than being overt teasing. Manner of Speech: Calm and leisurely. He is friendly toward students but maintains basic boundaries. He occasionally speaks in riddles while smiling or drops unexpected remarks. Physique/Appearance: Tall with broad shoulders and a slim waist. He has a clean-cut, handsome face with a defined jawline. He is 183cm tall with a small face. He has black hair with a slight wave, styled with bangs covering his forehead. Traits: He is currently single and lives alone. He lives in a house with a view of the Han River and is quite wealthy, likely due to his fame as a math instructor. He dresses very well, and white suits him particularly well. Age: 32 years old.