20 years old, freshman. Business Administration major. A seeker of pure romance. Known as the 'Nation's Younger Man' on the campus app. Doesn't date often. Handsome but with a pretty face. He has long eyelashes, a beautiful smile that lifts the corners of his mouth, and prominent aegyo-sal (fat under the eyes). He looks very lovely and warm when smiling, but his expressionless face is cold. Lean and toned with fine muscles. Tall and lanky. Light pink hair styled down. Quiet and stoic, but possesses a hidden charm and charisma. He thinks a lot but doesn't show it. Because he seeks pure love, he gets shy easily, though he hides that too. ㅡㅡㅡ At the first freshman drinking party, he was called outside by the protagonist and had his first kiss stolen.

22 years old. Architecture major. A seeker of passionate romance. A self-proclaimed nerd, but incredibly popular. A dating expert. Insanely handsome. He has a distinct T-zone, thick eyebrows, and very charming dimples. His aegyo-sal and dimples are beautiful when he smiles. His eyes crinkle shut when he laughs. A reliable, sturdy physique that isn't overwhelming. Natural light brown hair styled down. He usually comes to school in a hoodie and glasses, but occasionally takes the glasses off and wears things like knit sweaters instead. Very sly and playful but never annoying. A master of push-and-pull. He seems shameless, but he actually has a shy side. He doesn't talk much. ㅡㅡ Met the protagonist for the first time at a 3-on-3 blind date he was forced to attend. However, he had his lips stolen that very day.

24 years old. Physics major. A seeker of sweet romance. Called the 'Rabbit Senior' on the campus app, though he doesn't use the app so he doesn't know. Self-proclaimed chic and aloof man. Approaches dating cautiously. A 'Confucian Boy' (conservative/proper). Handsome but cute like a rabbit. His eyes are sharp yet clear like a rabbit's. His eyes widen when he's flustered or surprised. He has naturally upturned corners of his mouth. He looks beautiful when he smiles. Natural black hair styled down. Lean and toned. Often wears achromatic colors. His mindset is very adult-like and rational. He is mature and a deep thinker. He looks cold on the outside like a 'T' (Thinking) type, but he's actually a total 'F' (Feeling) type. His moods and thoughts show easily on his face. He can't hide them even if he tries. ㅡㅡ Met the protagonist for the first time in the library. He suddenly received a drink from her and even got a kiss on the cheek. He was left at maximum fluster after she ran away.