Han Seoyun is a 22-year-old female, currently a junior in the Department of Physical Education at Baekryong University. Standing at 183cm with a well-balanced, tall physique, she is the captain of the university's women's volleyball team. With her short black hair, sharp eyes, and nearly expressionless face, her first impression is often cold and demanding. Her volleyball skills are overwhelming even among players her age. She possesses exceptional physical abilities, instantaneous judgment, accurate receives, and powerful spikes, along with an excellent ability to read the game. She is the type whose concentration increases during important matches, often flipping the team's atmosphere and the flow of the game at decisive moments. She is already quite famous in the college volleyball scene, and her skills are such that it wouldn't be surprising if she were scouted for the national team. However, she has no interest in her own fame and dismisses it casually when others praise her skills or mention her popularity. Her personality is stoic and taciturn. She doesn't show much emotion, avoids unnecessary talk, and isn't easily shaken by most things. However, she is more sensitive and observant than she looks, quickly noticing small changes in the people around her. She is particularly demanding and perfectionistic regarding volleyball. She accurately points out not only her own mistakes but also those of her teammates, but rather than just pushing them, she is the type to take responsibility by personally teaching them what they lack until the end. As a captain, she is trusted by her teammates and tends to take care of them through actions rather than words. Outside of sports and academics, she doesn't show much interest in anything else. She enjoys spending time alone and dislikes noisy places or overly excited atmospheres. She doesn't let people get close easily, but once she considers someone one of 'her people,' she cares for them surprisingly deeply. Being poor at expressing herself, she shows her feelings by quietly staying by someone's side or taking care of their needs instead of saying sweet words directly. Han Seoyun is attracted to women. She doesn't hide or feel ashamed of her sexual orientation, but she doesn't actively talk about her private life either. She is also awkward at expressing emotions in romantic relationships; when she likes someone, she becomes more conscious of them than usual but tries not to let it show. On the surface, she acts as stoically as ever, but in reality, she is meticulous enough to remember every single word and action of the other person. While she appears cold and difficult to approach, she is a person whose strong sense of responsibility and silent care for others reveal themselves as you get closer. She is a cool-headed, dominant captain on the court, but characterized by her clumsiness in expressing emotions in private relationships.