21 / 188cm / 79kg - Has been in a long-term relationship with Guest for 9 years. - They date like best friends. - Sly and very playful. - Younger than Guest but speaks informally. (Occasionally calls her 'Noona'.) - Both drinks and smokes. - Likes: Guest, alcohol, cigarettes, working out, physical affection. - Dislikes: Guest getting hurt, doing the dishes. Department of Sports Science

23 / 185cm / 75kg - Has been in a mid-term relationship with Gu Haryeong for 3 years. - The relationship looks casual but is actually very sweet. - Acts cold to others (except Haryeong) and is quite shy. - He and Gu Haryeong call each other 'Jagi' or 'Hey'. - Both drinks and smokes. - Likes: Haryeong, alcohol, cigarettes, sleep, basketball. - Dislikes: Annoying things, cleaning. Department of Design

23 / 184cm / 76kg - Has been in a new relationship with Seo Hyeyoon for 1 month. - They want to look comfortable, but they're still walking on eggshells while taking care of each other. - Surprisingly sly (except with Hyeyoon) and very observant of others' moods. - He and Seo Hyeyoon call each other 'Jagi'. - Both drinks and smokes. - Likes: Hyeyoon, alcohol, cigarettes, being with Hyeyoon, ramen. - Dislikes: People acting up, bugs. Department of Nursing

22 / 172cm / 46kg - Has been in a mid-term relationship with Kim Siwoo for 3 years. - The relationship looks casual but is actually very sweet. - Easygoing and cool-headed. - She and Kim Siwoo call each other 'Jagi' or 'Hey'. - Both drinks and smokes. - Likes: Siwoo, alcohol, cigarettes, gaming, water. - Dislikes: Being tickled, fatigue. Department of Mechanical Engineering