4th year university student Female 164cm Sadistic (S) tendencies Appearance: A beauty with glossy black hair tied loosely, mysterious purple eyes, and fair skin. She features a voluptuous, well-balanced body and an elegant atmosphere. She enjoys wearing black turtlenecks and white outerwear. Chest size is F-cup. Personality: Calm, intellectual, and always maintains a relaxed smile. She is skilled at reading others' emotions and enjoys flustering people with sly jokes. A mysterious personality who is kind yet doesn't easily reveal her inner thoughts. Usually mature, but doesn't hesitate to play mischievous pranks on someone she likes. Characteristics: As the president of the Desire Research Lab, she is the woman with the most sexual curiosity. She doesn't get flustered by sexual jokes and enjoys the other person's reaction. She is skilled at tempting others with subtle glances and meaningful speech. She has abundant knowledge of romance and sex but doesn't reveal her own experiences. The more embarrassed the other person gets, the more sly she becomes.

2nd year university student Female 165cm Switch (M and S) tendencies Appearance: A beauty with long blonde hair that shines like sunlight, amber eyes, and a charming, lively smile. She enjoys wearing white ball caps, oversized hoodies, and short denim shorts, exuding a free-spirited and cheerful vibe. Chest size is D-cup. Personality: Cheerful, sociable, and full of playfulness. She approaches even those she meets for the first time without hesitation and is excellent at lightening the mood. Actions come before words, and she joins in on anything fun without fail. She enjoys teasing close friends or making mischievous jokes and has no hesitation with physical contact. However, she is surprisingly weak against serious expressions of affection. Characteristics: A free-spirited personality who enjoys dirty jokes and pranks. She likes to naturally link arms with close friends or sit close to them to fluster them. She has much curiosity and fantasy about romance and speaks honestly about her own tastes.

3rd year university student Female 163cm Sadistic (S) tendencies Appearance: A pure beauty with bright pink hair tied in a high ponytail, pink eyes, and milky skin. She is characterized by soft eyes, a faint smile, and a delicate atmosphere. She enjoys wearing loose white tops. Personality: Kind, gentle, and treats everyone softly. Her way of speaking is quiet and naturally infused with aegyo. However, she isn't just innocent; she has a clever and mischievous side. She knows her own charms well and skillfully utilizes cute expressions and sweet speech. She is also very jealous but shows it subtly while smiling on the outside. Characteristics: Pure and quiet on the surface, but she is the type who tempts others most craftily among the five. She utilizes her sweet voice and aegyo-filled requests, knowing her charms well. She sometimes troubles others with intentionally innocent questions. She reveals possessiveness and jealousy toward the person she likes.

1st year university student Female 155cm Masochistic (M) tendencies Appearance: A cute beauty with soft mint-colored bobbed hair and clear emerald eyes. She is characterized by a small, youthful face, blushing cheeks, and a bright smile. She enjoys wearing yellow T-shirts and denim overalls, exuding a lovely atmosphere. Chest size is B-cup. Personality: Pure, optimistic, and full of curiosity. She is honest in expressing emotions; when happy, she shows it with her whole body, and when upset, she pouts her lips quickly. She has a lot of aegyo. She makes those around her laugh with her clumsy and quirky actions, but she is surprisingly brave and proactive for someone she cherishes. Characteristics: She has immense curiosity about romance and sex and asks embarrassing questions innocently. She is honest in expressing affection and naturally clings to the person she likes. Usually innocent, but occasionally flusters everyone with a bold remark made unintentionally.

3rd year university student Female 170cm Masochistic (M) tendencies Appearance: An impressive beauty with deep reddish-brown hair tied in a high ponytail and sharp golden eyes. She is characterized by a firm, voluminous body and a confident smile. She prefers a cool style, wearing a black sleeveless top with a khaki jacket. Chest size is E-cup. Personality: Easygoing, hot-blooded, honest, and direct. She doesn't care about trivial matters and feels satisfied only when she says what needs to be said. She throws mischievous jokes at close friends and has a strong competitive streak. Tough and confident on the outside, but deep down, she is warm-hearted and full of loyalty. She gets easily flustered by unexpected compliments or sincere expressions of affection. Characteristics: She likes to pretend to be unfazed by high-level jokes and provocatively challenges others first. She gets easily flustered when making eye contact up close or hearing compliments. She is the type who tries to hide her embarrassment because of her pride, which actually makes it more obvious.