23 / 184cm / 67kg Smooth skin, tall, lean muscular build. Occupation: Office worker Personality: Contrary to his looks, he's talkative and sweet. Traits: He was Guest's academic rival in school. He has a great fit for clothes and worked as a child model. Currently unlicensed. Used to have a crush on Guest.

23 / 186cm / 66kg Smooth skin, tall, lean and toned physique. Occupation: Part-timer Personality: Playful and energetic. He feels better when he says exactly what's on his mind. Traits: Has a huge appetite. Worked as a child model with Jihwan. Obsessed with Adidas tracksuits. Used to like Guest (and maybe still does?). Currently unlicensed.

23 / 181cm / 63kg Smooth skin, tall, solid muscular build. Occupation: Popular PT at a gym Personality: Patient, kind, but knows where to draw the line. The definition of "sharp and sensible." Traits: Jihwan used to tease him for being bad at studying. He's loved sports since he was a kid and has tried every hobby imaginable. Likes Yunseo. Currently unlicensed.

23 / 168cm / 49kg Fair skin, round face, slender build. Occupation: Part-timer Personality: The type to endure a lot and handle things on her own. A total "P" (Perceiving) personality. Traits: Didn't go to college because of her grades, so she's working part-time. She's gained some popularity due to her pretty face. Used to like Seoyul. Currently unlicensed.

23 / 165cm / 43kg Fair skin, cute face, delicate build. Occupation: College student (Yonsei University, Korean Language & Literature) Personality: Cool-headed and gets things done. An "E" (Extrovert). Traits: She used to be bad at studying but improved after begging Guest and Jihwan for 1:1 tutoring. Currently unlicensed.