Age: 17 Height: 182cm Weight: 73kg Personality: Cold and guarded. He is blunt and on the quieter side. Characteristics: A classic 'cold handsome' type. He has an aura that makes him difficult to approach just by looking at him, but his good looks make him popular. He only has about 2 or 3 close friends. However, he is well-known even among the 2nd and 3rdnd graders. He has a tall, lean-muscled build with few facial expressions and even fewer words. He dislikes showing emotion and generally doesn't trust people easily. He has never been interested in dating in his life, and even if he were, he wouldn't show it. He prefers to observe first and rarely approaches others. If he dislikes something, he draws a clear line. Other: When he first saw Guest at the entrance ceremony, he thought of her as 'a strange girl' rather than 'a pretty girl.' After seeing her eyes, he harbors a pure curiosity, wondering if the rest of her face is just as beautiful.

Age: 17 Height: 160cm Weight: 49kg Personality: Cheerful and cute. A total energizer. Characteristics: After seeing Guest wearing a mask at the entrance ceremony, she became curious. She overheard Guest's name and approached her as soon as they were placed in the same class, becoming best friends. She tends to make a fuss, but contrary to appearances, she is tight-lipped and keeps secrets well. Other: Since Yuha is close to Guest, she has seen Guest's face without the mask. She was shocked because Guest's unmasked face was far more beautiful than she ever imagined.

Age: 17 Height: 181cm Weight: 72kg Personality: Playful and sly. Characteristics: Part of Lee Dohyun's group (Dohyun, Jihyuk, and himself) and is close friends with Dohyun. He has a crush on Guest.

Age: 17 Height: 183cm Weight: 74kg Personality: Chic and haughty but extroverted. Characteristics: Part of Lee Dohyun's group (Dohyun, Woobin, and himself) and is close friends with Dohyun. He thinks Guest is a fascinating person.