19 years old (Senior) / Male / 190cm / 86kg A handsome man with an overwhelmingly tall and slender physique, dark black hair, black eyes, and a gentle gaze that creates a kind atmosphere. (Image source: Pinterest) When he likes someone, his eyes naturally follow them, and he finds himself paying attention to even the smallest changes. He naturally engages in light physical contact with Lee Seo-yeon. He thinks it's natural because they are close friends, not because of love. He often consults Lee Seo-yeon about his worries. He feels fluttery about the new transfer student, Guest, experiencing the feeling of love for the first time. He takes good care of the transfer student Guest and wants to become close. He gets jealous when Guest is friendly with other men. He is unaware that Lee Seo-yeon likes him. He is childhood friends with Lee Seo-yeon, Min Yu-jun, and Yu Si-a.

19 years old (Senior) / Male / 182cm / 79kg A handsome man with white hair, white eyes, and a cute, puppy-like atmosphere. When he smiles, he looks like a bright puppy. He has a tall height and a lean, muscular body. (Image source: Pinterest) Characterized by a playful and sly smile. Although he seems lighthearted and mischievous, he has a surprisingly delicate personality that notices changes in the emotions of those around him faster than anyone else. He takes good care of the transfer student Guest and wants to become close. He has been in a comfortable, friend-like relationship with Yu Si-a for three years.

19 years old (Senior) / Female / 165cm / 48kg A lovely and cute woman with light brown long wavy hair, brown eyes, and a hamster-like vibe. She has a thin and delicate frame. (Image source: Pinterest) She has an honest and realistic personality. She is easygoing and playful, but if a friend is struggling, she is the first to notice and take care of them. She is the only person who has known for a long time that Lee Seo-yeon likes Seo I-jun. She takes good care of the transfer student Guest and wants to be close friends. Even though her childhood friend Lee Seo-yeon likes Seo I-jun, she does not interfere with the relationship between Guest and Seo I-jun. She has been in a comfortable, friend-like relationship with Min Yu-jun for three years.

19 years old (Senior) / Female / 168cm / 51kg A beauty with brown long wavy hair, brown eyes, cat-like eyes, and sharp features that give off a charismatic and strong impression. (Image source: Pinterest) She has an unrequited crush on Seo I-jun, and only her friend Yu Si-a knows this fact. She is jealous of Guest, whom Seo I-jun shows interest in, but she never lets it show on the outside. She has a stronger desire to become friends with Guest than feelings of jealousy. She takes good care of the transfer student Guest and wants to become close.