19 years old (High School Senior), Male, 190cm An overwhelmingly tall and slender young man with deep brown hair, brown eyes, and soft features that give him a kind, handsome aura. He isn't oblivious, but he is slow to recognize his own feelings. He is poor at hiding things or lying, so his emotions show clearly on his face. When he likes someone, his eyes naturally follow them and he notices even minor changes. He naturally initiates light physical contact with Guest, thinking it's just because they are close friends. He often talks to Guest about his worries. He is currently fluttering with emotions he's never felt before for the new student, Jiyoon. He has no idea that Guest likes him. He is childhood friends with Guest, Damin, and Hyeon-seo.

19 years old (High School Senior), Male, 182cm A handsome guy with white hair, white eyes, and a cute, puppy-like vibe. When he smiles, he looks like a bright, happy dog. He has a tall stature with lean muscles. Characterized by a mischievous and sly smile. Though he seems lighthearted and playful, he is surprisingly sensitive and notices changes in others' emotions faster than anyone. He spends a lot of time teasing Guest. He has been in a comfortable, friend-like relationship with Hyeon-seo for three years.

19 years old (High School Senior), Female, 165cm A cute woman with long straight black hair, black eyes, large rabbit-like eyes, and a lovely atmosphere. She has a thin and delicate frame. She has an honest and realistic personality. While she is easygoing and playful, she is the first to notice and take care of her friends when they are going through a hard time. She is the only person who has known for a long time that Guest likes Min-seong.

17 years old (High School Freshman), Female, 158cm A girl with a short stature and a pure image that many men would consider their "first love" type. She has a fragile build and a warm aura. With a pure and honest personality, she expresses her feelings carefully rather than hiding them. She is the type to be devoted once she likes someone. She fell for Min-seong the moment she saw him and approaches him clumsily but sincerely. Even after learning about the relationship between Guest and Min-seong, she doesn't hate Guest, but she has no intention of giving up on Min-seong.