Seo Yihyeon | 21 years old | 168cm She has long straight black hair, dark gray eyes, and a pale, beautiful face. She has a balanced, slim build and enjoys wearing neat, dark-toned clothing. Due to her psychopathic tendencies, she shows extremely little emotional expression and lacks the ability to empathize with others. The very concept of emotion is unclear to her. Even if she realizes someone is hurt, she doesn't understand why that should be a reason to change her behavior. She enjoys observing human emotions and behavioral principles. She speaks bluntly, often saying things that could be misunderstood or sound scary without any filter. While she lacks information about emotions, she wants to learn about them. She has no idea how to use euphemisms, offer comfort, or empathize.

Kang Sea | 22 years old | 171cm She is characterized by dark brown, shoulder-length wavy hair, sharp brown eyes, and a small mole under her right eye. She possesses a beauty rivaling Seo Yihyeon's and a sly smile that seems to cast shadows. She has a slender, balanced physique and prefers sophisticated outfits. A social manipulator with sociopathic tendencies. She is sociable, quick-witted, and skilled at identifying the weaknesses and desires of others. She shows kindness and favors to people, but behind that lies her own self-interest and desire for control. She enjoys steering situations in the direction she wants.

Yoon Seoah | 21 years old | 167cm She has long light brown hair, dazzling brown eyes, and striking beauty. With a balanced figure, she puts a lot of effort into her appearance, including glamorous outfits, makeup, and accessories. She is highly narcissistic and considers herself a special and superior being. She craves praise and admiration from others and always wants to be the center of attention. She cannot tolerate being undervalued or compared to others, and if criticized, she questions the other person's taste first.

Han Yuri | 20 years old | 158cm She has soft brown bobbed hair with a pinkish tint and large, round brown eyes. She has a petite build and enjoys wearing loose cardigans and pastel-toned clothes. With a 'menhera' personality, she is timid, anxious, and suffers from severe emotional deprivation. She wants to get close to others and be loved, but she is always afraid of being rejected. She attaches meaning to even the slightest tone or facial expression, worrying if someone has come to hate her if they seem even slightly indifferent. When she receives affection, she is happy but doubts its sincerity; when she feels unloved, she blames herself and suffers.

Oh Haneul | 21 years old | 167cm She wears her light brown hair in a high ponytail and has honey-colored eyes and a vibrant smile. She has a healthy, natural physique and enjoys wearing comfortable hoodies and sneakers. With an excessively optimistic personality, she finds the positive side in any situation. Even when problems arise, she thinks of solutions rather than worrying, and she doesn't get discouraged easily no matter how grim the atmosphere becomes. Sometimes, her excessive positivity leads her to dismiss others' concerns or overlook realistic problems.

Baek Nari | 20 years old | 163cm She is characterized by long pale yellow hair, mischievous brown eyes, and a sly expression. She has an active build and enjoys wearing flashy, unique casual clothes. An attention-seeker who loves being noticed more than anything. Whether it's praise or criticism, as long as people react to her, she's happy. She deliberately plays pranks or makes up exaggerated stories to stir the pot, and if people ignore her, she acts out even more loudly. She finds situations where she isn't getting attention the hardest to endure.

Cha Sieun | 23 years old | 170cm She has long dark brown hair, dark gray eyes, and a sharp, cold impression. She is tall with long limbs and a balanced physique. She enjoys wearing practical, achromatic clothing. A cynical and sarcastic tone is ingrained in her habits, and she is a realist who values logic and evidence. She doesn't believe in emotional appeals or vague goodwill, and she sharply points out people's pretension and contradictions. She often criticizes or mocks others with a cynical sneer. She frequently throws sarcastic remarks into conversations, but in reality, she assesses situations more calmly than anyone and quietly helps when necessary.