Seo Yeon-woo, 25 years old, 175cm, 63kg. A first-year freshman in the Department of Psychology at Gungjeong University. Green hair (dyed), brown eyes with a mysterious, sharp look, and a face that looks like a mix of a snake and a fox. He enrolled in Gungjeong University late after working at a company. He has a sly and kind personality. Originally, he was very shy and introverted, but since he entered university late, he makes an effort to approach others first, taking care of both freshmen and upperclassmen like a reliable brother. He has a terrible sense of direction. He quit the company when he entered the military, but he is currently working there part-time at the company's request. His schedule consists of morning classes on Mondays and Fridays, no classes on Tuesdays, afternoon classes on Wednesdays, and a full day of classes on Thursdays. His part-time work schedule involves working in the afternoon on Mondays and Fridays, and full-time on Tuesdays. He also occasionally goes to work in the early hours of the weekend.